Name: S&S CYCLE 585 Series Cam Kit, Gear, exhaust close 20, Harley 06-16 FX 07-16 FL
Brand: S&S Cycle
SKU: DS-09250158
Price: 948.95 USD
Availability: InStock

S&S Cycle

S&S CYCLE 585 Series Cam Kit, Gear, exhaust close 20, Harley 06-16 FX 07-16 FL

DS-09250158

$948.95

In Stock

Shipping calculated at checkout.

S&S CYCLE 585 Series Cam Kit, Gear, exhaust close 20, Harley 06-16 FX 07-16 FL

Camshaft gear drive kits increase valve timing accuracy by eliminating timing chain lash and loosely-fit stock chain drive
Reverses the rear cam's direction of rotation, providing additional operating clearance between cam lobes; as a result, higher cam lifts are possible with the gear drive kit
Kits include cams, inner gears, outer drive gears, inner and outer bearings, gasket and instructions
Material must be removed from the inner surface of the stock gear cover to install S&S gear drive cams
A hydraulic press and other professional-level tools are required to install these kits
S&S recommends that adjustable pushrod/cover kit PART #0928-0017 be used
Cam bearings and gaskets must be replaced when installing new cams
Cams are also available with inner gears only; intended for cam replacement for motors that have already been converted to an S&S gear-drive system
Made in the U.S.A.
Cams for 00-06 Twin Cam are for use with stock splined drive gears; for installation on 99 Twin Cam motors you must purchase splined outer drive sprocket; S&S recommends that Andrews 4340 steel drive sprocket PART #DS-199175 be used
Cams for 06 Dyna and 07-16 Twin Cam are for use with models with hydraulic tensioner chain-drive system; cams 510C and 551C are bolt-in applications, all others require high-lift valve springs
Made in the U.S.A.

S&S Cycle

S&S CYCLE 583 Series Cam Kit, Gear, exhaust close 22, exhaust duration 262, exhaust open 60, Harley 99-06 FX 99-06 FL

DS-09250744

$948.95

In Stock

Shipping calculated at checkout.

S&S CYCLE 583 Series Cam Kit, Gear, exhaust close 22, exhaust duration 262, exhaust open 60, Harley 99-06 FX 99-06 FL

Camshaft gear drive kits increase valve timing accuracy by eliminating timing chain lash and loosely-fit stock chain drive
Reverses the rear cam's direction of rotation, providing additional operating clearance between cam lobes; as a result, higher cam lifts are possible with the gear drive kit
Kits include cams, inner gears, outer drive gears, inner and outer bearings, gasket and instructions
Material must be removed from the inner surface of the stock gear cover to install S&S gear drive cams
A hydraulic press and other professional-level tools are required to install these kits
S&S recommends that adjustable pushrod/cover kit PART #0928-0017 be used
Cam bearings and gaskets must be replaced when installing new cams
Cams are also available with inner gears only; intended for cam replacement for motors that have already been converted to an S&S gear-drive system
Made in the U.S.A.
Cams for 00-06 Twin Cam are for use with stock splined drive gears; for installation on 99 Twin Cam motors you must purchase splined outer drive sprocket; S&S recommends that Andrews 4340 steel drive sprocket PART #DS-199175 be used
Cams for 06 Dyna and 07-16 Twin Cam are for use with models with hydraulic tensioner chain-drive system; cams 510C and 551C are bolt-in applications, all others require high-lift valve springs
Made in the U.S.A.

S&S Cycle

S&S CYCLE 583 EZ Easy Start Cam Kit, Gear, exhaust close 24, exhaust duration 262, intake close 18, intake duration 204, Harley 99-06 FX 99-06 FL

DS-09250454

$1,070.95

In Stock

Shipping calculated at checkout.

S&S CYCLE 583 EZ Easy Start Cam Kit, Gear, exhaust close 24, exhaust duration 262, intake close 18, intake duration 204, Harley 99-06 FX 99-06 FL

Start any engine regardless of displacement or compression ratio with a stock starter
Save your starter and battery; tested for 10,000 starts without running battery down
Allow for easy start by initially reducing crank compression, but once the engine starts and rpm increases, the compression release lobe is centrifugally retracted and the engine runs normally, with full compression, and without any loss in performance
Available in chain drive and gear drive versions
All chain-drive cams include installation kit
All gear-drive cams include 4-gear set and installation kit
Gear-drive cams also available with inner gears only; intended for cam replacement for motors that have already been converted to an S&S gear-drive system
Made in the U.S.A.

S&S Cycle

S&S CYCLE 551 Series Cam Kit, Gear, exhaust close 15, exhaust duration 237, exhaust lift .550", Harley 99-06 FX 99-06 FL

DS-09250742

$948.95

In Stock

Shipping calculated at checkout.

S&S CYCLE 551 Series Cam Kit, Gear, exhaust close 15, exhaust duration 237, exhaust lift .550", Harley 99-06 FX 99-06 FL

Camshaft gear drive kits increase valve timing accuracy by eliminating timing chain lash and loosely-fit stock chain drive
Reverses the rear cam's direction of rotation, providing additional operating clearance between cam lobes; as a result, higher cam lifts are possible with the gear drive kit
Kits include cams, inner gears, outer drive gears, inner and outer bearings, gasket and instructions
Material must be removed from the inner surface of the stock gear cover to install S&S gear drive cams
A hydraulic press and other professional-level tools are required to install these kits
S&S recommends that adjustable pushrod/cover kit PART #0928-0017 be used
Cam bearings and gaskets must be replaced when installing new cams
Cams are also available with inner gears only; intended for cam replacement for motors that have already been converted to an S&S gear-drive system
Made in the U.S.A.
Cams for 00-06 Twin Cam are for use with stock splined drive gears; for installation on 99 Twin Cam motors you must purchase splined outer drive sprocket; S&S recommends that Andrews 4340 steel drive sprocket PART #DS-199175 be used
Cams for 06 Dyna and 07-16 Twin Cam are for use with models with hydraulic tensioner chain-drive system; cams 510C and 551C are bolt-in applications, all others require high-lift valve springs
Made in the U.S.A.

S&S Cycle

S&S CYCLE 551 EZ Easy Start Cam Kit, Gear, exhaust close 17, exhaust duration 237, exhaust lift .550", Harley 99-06 FX 99-06 FL

DS-09250453

$1,070.95

In Stock

Shipping calculated at checkout.

S&S CYCLE 551 EZ Easy Start Cam Kit, Gear, exhaust close 17, exhaust duration 237, exhaust lift .550", Harley 99-06 FX 99-06 FL

Start any engine regardless of displacement or compression ratio with a stock starter
Save your starter and battery; tested for 10,000 starts without running battery down
Allow for easy start by initially reducing crank compression, but once the engine starts and rpm increases, the compression release lobe is centrifugally retracted and the engine runs normally, with full compression, and without any loss in performance
Available in chain drive and gear drive versions
All chain-drive cams include installation kit
All gear-drive cams include 4-gear set and installation kit
Gear-drive cams also available with inner gears only; intended for cam replacement for motors that have already been converted to an S&S gear-drive system
Made in the U.S.A.

S&S Cycle

S&S CYCLE 551 EZ Easy Start Cam Kit, Gear, exhaust close 17, exhaust duration 237, exhaust lift .550", Harley 06-16 FX 07-16 FL

DS-09250448

$1,070.95

In Stock

Shipping calculated at checkout.

S&S CYCLE 551 EZ Easy Start Cam Kit, Gear, exhaust close 17, exhaust duration 237, exhaust lift .550", Harley 06-16 FX 07-16 FL

Start any engine regardless of displacement or compression ratio with a stock starter
Save your starter and battery; tested for 10,000 starts without running battery down
Allow for easy start by initially reducing crank compression, but once the engine starts and rpm increases, the compression release lobe is centrifugally retracted and the engine runs normally, with full compression, and without any loss in performance
Available in chain drive and gear drive versions
All chain-drive cams include installation kit
All gear-drive cams include 4-gear set and installation kit
Gear-drive cams also available with inner gears only; intended for cam replacement for motors that have already been converted to an S&S gear-drive system
Made in the U.S.A.

Mid-USA

Gear Drive Camshafts,55Hg BT 07/L* & 2006 Dyna Models Uw #66015 & #66017 216355G

MID-66992

$393.65

In Stock

Shipping calculated at checkout.

Gear Drive Camshafts,55Hg Bt 07/L* & 2006 Dyna Models Uw #66015 & #66017 216355G

Reduced maintenance (no plastic chain guides or tension shoes to wear and contaminate engine oil or clog oil passages)
Cam timing remains constant; all drive and cam gears utilize a light press fit (gear lash) thus eliminating any chain stretch
Bearing loads are reduced; no chain tensioners are used which can rob horsepower
Critical sprocket alignment is unnecessary
To ease installation and eliminate the need to remove the fuel tank and rocker covers, use our adjustable pushrods found in the engine section
Includes instructions

Andrews 55HG Cam Kit
Timing(*): 22/46 & 52/20
Duration @ .053: 248 & 252
Duration @ .020: 283 & 292
Valve Lift: .550 & .550
Lift @ TDC: .197 & .181
Stock Springs
Application: Great cam for 95 to 103 engines with 9.8 to 10.2 compression ratio. Max horsepower to torque at mid and upper RPM's (2600-6200 RPM)

Mid-USA

Gear Drive Camshafts,50Hg BT 07/L* & 2006 Dyna Models Uw #66015 & #66017 216350G

MID-66991

$247.41

In Stock

Shipping calculated at checkout.

Gear Drive Camshafts,50Hg Bt 07/L* & 2006 Dyna Models Uw #66015 & #66017 216350G

Reduced maintenance (no plastic chain guides or tension shoes to wear and contaminate engine oil or clog oil passages)
Cam timing remains constant; all drive and cam gears utilize a light press fit (gear lash) thus eliminating any chain stretch
Bearing loads are reduced; no chain tensioners are used which can rob horsepower
Critical sprocket alignment is unnecessary
To ease installation and eliminate the need to remove the fuel tank and rocker covers, use our adjustable pushrods found in the engine section
Includes instructions

Andrews 50HG Cam Kit
Timing(*): 20/48 & 54/18
Duration @ .053: 248 & 252
Duration @ .020: 283 & 287
Valve Lift: .510 & .510
Lift @ TDC: .184 & .168
Stock Springs
Application: Designed for easy installation in 88 to 103 inch motors with stock heads & 9.5 to 9.8 compression ratio (2400-6000 RPM)

Mid-USA

Gear Drive Camshafts,54Hg BT 07/L* & 2006 Dyna Models Uw #66015 & #66017 .216354G

MID-66990

$433.00

In Stock

Shipping calculated at checkout.

Gear Drive Camshafts,54Hg Bt 07/L* & 2006 Dyna Models Uw #66015 & #66017 .216354G

Reduced maintenance (no plastic chain guides or tension shoes to wear and contaminate engine oil or clog oil passages)
Cam timing remains constant; all drive and cam gears utilize a light press fit (gear lash) thus eliminating any chain stretch
Bearing loads are reduced; no chain tensioners are used which can rob horsepower
Critical sprocket alignment is unnecessary
To ease installation and eliminate the need to remove the fuel tank and rocker covers, use our adjustable pushrods found in the engine section
Includes instructions

Andrews 54HG Cam Kit
Timing(*): 16/42 & 43/15
Duration @ .053: 238 & 238
Duration @ .020: 273 & 273
Valve Lift: .555 & .555
Lift @ TDC: .165 & .158
Stock Springs
Application: Specially designed for 88 to 103 engines with compression ratio up to 10:1 (2200-2600 RPM)

Mid-USA

Gear Drive Camshafts,32Hg BT 07/L* & 2006 Dyna Models Uw #66015 & #66017 .216332G

MID-66988

$313.40

In Stock

Shipping calculated at checkout.

Gear Drive Camshafts,32Hg Bt 07/L* & 2006 Dyna Models Uw #66015 & #66017 .216332G

Reduced maintenance (no plastic chain guides or tension shoes to wear and contaminate engine oil or clog oil passages)
Cam timing remains constant; all drive and cam gears utilize a light press fit (gear lash) thus eliminating any chain stretch
Bearing loads are reduced; no chain tensioners are used which can rob horsepower
Critical sprocket alignment is unnecessary
To ease installation and eliminate the need to remove the fuel tank and rocker covers, use our adjustable pushrods found in the engine section
Includes instructions

Andrews 32HG Cam Kit
Timing(*): 10/46 & 52/08
Duration @ .053: 236 & 240
Duration @ .020: 272 & 276
Valve Lift: .570 & .570
Lift @ TDC: .131 & .120
Hi-Lift Springs
Application: High lift version of 31HG. Much more power thru RPM range with 10:1+ compression ratio (2800-5800 RPM)

Mid-USA

Gear Drive Camshafts,21Hg BT 07/L* & 2006 Dyna Models Uw #66015 & #66017 .216321G

MID-66985

$247.43

In Stock

Shipping calculated at checkout.

Gear Drive Camshafts,21Hg Bt 07/L* & 2006 Dyna Models Uw #66015 & #66017 .216321G

Reduced maintenance (no plastic chain guides or tension shoes to wear and contaminate engine oil or clog oil passages)
Cam timing remains constant; all drive and cam gears utilize a light press fit (gear lash) thus eliminating any chain stretch
Bearing loads are reduced; no chain tensioners are used which can rob horsepower
Critical sprocket alignment is unnecessary
To ease installation and eliminate the need to remove the fuel tank and rocker covers, use our adjustable pushrods found in the engine section
Includes instructions

Andrews 21HG Cam Kit
Timing(*): 10/30 & 40/08
Duration @ .053: 220 & 228
Duration @ .020: 255 & 264
Valve Lift: .498 & .498
Lift @ TDC: .134 & .121
Stock Springs
Application: Bolt-in 1988/1996 Cam: more torque for all around riding with heavy bikes, intended for stock compression ratio and pistons. Similar to #23 Cam in EV80 (1700-4800 RPM)

Mid-USA

Gear Drive Cam Kit, 640G Big Twin 07/Later,Dyna 06 Complete Kit

MID-66984

$949.00

In Stock

Shipping calculated at checkout.

Gear Drive Cam Kit, 640G Big Twin 07/Later,Dyna 06 Complete Kit
Application Information for S & S^® Camshaft for 1999/Later Big Twins
S & S offers a variety of cam grinds for 1999/Later Big Twin gear drive engines. With the exception of the bolt in 510G camshafts, S & S cams are high lift and were designed to take advantage of the extra flow of ported stock heads or S & S Super Stock^® cylinder heads. Due to the high lift of these cams, S & S adjustable pushrods and high performance valve springs are recommended.

510G: Designed as a bolt in cam for 88, 95, & 96 engines with compression ratios below 9.7:1. Intended primarily for stock heads that have not been ported.
546G: This is a short duration emissions cam with very little overlap to reduce emissions of unburned hydrocabons. It is intended as a replacement part for S & S emissions certified engines.
570G: Designed for 88 to 96 engines with compression ratios between 9:1 and 10:1.
585G: Designed for 88 to 95 engines with compression ratios from 10 to 10.5:1 and 100 and 107 engines at 9.7:1 to 10.5:1 compression.
625G: Cam set designed for 95 or larger engines with compression ratios between 10.0 and 10.75:1.
640G: Designed for engines of 95 or more with compression ratios between 10.5:1 and 11.5:1 used in S & S 124 engines.
675G: Designed for 120 or larger engines with at least 11:1 compression ratio.

The patented S & S Gear Drive Cams are a must in order to achieve the full potential from high performance Harley Davidson^® Twin Cam 88^® engines. Since the chain drive system used in stock Twin Cam 88 engines is not adequate to accurately control valve action at high RPM when using high lift cams and high performance valve springs, a different system was needed. The S & S Gear Drive System was developed to improve performance and to eliminate potential engine damage caused by failure of the chain and tensioner system. S & S Gear Drive Camshaft kits improve valve timing accuracy by eliminating timing chain lash as well as variations caused by the loose fitting stock cam drive sprockets. All stock chain drive components are replaced with S & S Gear Drive Cams and outer drive gears. This simple, effective solution reduces power loss by eliminating chain drag and allows more aggressive cam profiles and increased valve spring force to be used.

Notes:

Pinion shaft runout must be checked before installing S & S Gear Drive Cams.
A hydraulic press and other professional tools are required to install S & S Gear Drive Cams. Additionally, material must be removed from the inner surface of the stock gear cover. The stock crankcase will require clearance for S & S .625, .640, and .675 lift cams. S & S recommends that gear drive cams be installed by a professional mechanic.
Due to the inherent characteristics of gear drives, you may experience more valve train noise with gear driven cams. Oversized and undersized gears are available to help achieve correct gear lash. We have found that with 160 pounds of valve seat force, the S & S gear drive cams will perform well up to 6200 rpm. If higher rpm is anticipated valve springs that provide higher seat force should be used.

S & S 640G Cam Grind Complete Kit
Valve Timing Intake: 25°/60°
Valve Timing Exhaust: 65°/25°
Valve Duration Intake: 265°
Valve Duration Exhaust: 270°
Valve Lift: .640
Centerline Intake: 107.5°
Centerline Exhaust: 110.0°
Lift @ TDC Intake: .228
Lift @ TDC Exhaust: .214
Fits Big Twin 2007/Later & Dyna 2006

Mid-USA

Gear Drive Cam Kit, 585G Big Twin 07/Later,Dyna 06 Complete Kit

MID-66982

$949.00

In Stock

Shipping calculated at checkout.

Gear Drive Cam Kit, 585G Big Twin 07/Later,Dyna 06 Complete Kit
Application Information for S & S^® Camshaft for 1999/Later Big Twins
S & S offers a variety of cam grinds for 1999/Later Big Twin gear drive engines. With the exception of the bolt in 510G camshafts, S & S cams are high lift and were designed to take advantage of the extra flow of ported stock heads or S & S Super Stock^® cylinder heads. Due to the high lift of these cams, S & S adjustable pushrods and high performance valve springs are recommended.

510G: Designed as a bolt in cam for 88, 95, & 96 engines with compression ratios below 9.7:1. Intended primarily for stock heads that have not been ported.
546G: This is a short duration emissions cam with very little overlap to reduce emissions of unburned hydrocabons. It is intended as a replacement part for S & S emissions certified engines.
570G: Designed for 88 to 96 engines with compression ratios between 9:1 and 10:1.
585G: Designed for 88 to 95 engines with compression ratios from 10 to 10.5:1 and 100 and 107 engines at 9.7:1 to 10.5:1 compression.
625G: Cam set designed for 95 or larger engines with compression ratios between 10.0 and 10.75:1.
640G: Designed for engines of 95 or more with compression ratios between 10.5:1 and 11.5:1 used in S & S 124 engines.
675G: Designed for 120 or larger engines with at least 11:1 compression ratio.

The patented S & S Gear Drive Cams are a must in order to achieve the full potential from high performance Harley Davidson^® Twin Cam 88^® engines. Since the chain drive system used in stock Twin Cam 88 engines is not adequate to accurately control valve action at high RPM when using high lift cams and high performance valve springs, a different system was needed. The S & S Gear Drive System was developed to improve performance and to eliminate potential engine damage caused by failure of the chain and tensioner system. S & S Gear Drive Camshaft kits improve valve timing accuracy by eliminating timing chain lash as well as variations caused by the loose fitting stock cam drive sprockets. All stock chain drive components are replaced with S & S Gear Drive Cams and outer drive gears. This simple, effective solution reduces power loss by eliminating chain drag and allows more aggressive cam profiles and increased valve spring force to be used.

Notes:

Pinion shaft runout must be checked before installing S & S Gear Drive Cams.
A hydraulic press and other professional tools are required to install S & S Gear Drive Cams. Additionally, material must be removed from the inner surface of the stock gear cover. The stock crankcase will require clearance for S & S .625, .640, and .675 lift cams. S & S recommends that gear drive cams be installed by a professional mechanic.
Due to the inherent characteristics of gear drives, you may experience more valve train noise with gear driven cams. Oversized and undersized gears are available to help achieve correct gear lash. We have found that with 160 pounds of valve seat force, the S & S gear drive cams will perform well up to 6200 rpm. If higher rpm is anticipated valve springs that provide higher seat force should be used.

S & S 585G Cam Grind Complete Kit
Valve Timing Intake: 20°/45°
Valve Timing Exhaust: 60°/20°
Valve Duration Intake: 245°
Valve Duration Exhaust: 260°
Valve Lift: .585
Centerline Intake: 102.5°
Centerline Exhaust: 110.0°
Lift @ TDC Intake: .186
Lift @ TDC Exhaust: .179
Fits Big Twin 2007/Later & Dyna 2006

Mid-USA

Gear Drive Cam Kit, 570G Big Twin 07/Later, Dyna 06 Complete Kit

MID-66981

$949.00

In Stock

Shipping calculated at checkout.

Gear Drive Cam Kit, 570G Big Twin 07/Later, Dyna 06 Complete Kit
Application Information for S & S^® Camshaft for 1999/Later Big Twins
S & S offers a variety of cam grinds for 1999/Later Big Twin gear drive engines. With the exception of the bolt in 510G camshafts, S & S cams are high lift and were designed to take advantage of the extra flow of ported stock heads or S & S Super Stock^® cylinder heads. Due to the high lift of these cams, S & S adjustable pushrods and high performance valve springs are recommended.

510G: Designed as a bolt in cam for 88, 95, & 96 engines with compression ratios below 9.7:1. Intended primarily for stock heads that have not been ported.
546G: This is a short duration emissions cam with very little overlap to reduce emissions of unburned hydrocabons. It is intended as a replacement part for S & S emissions certified engines.
570G: Designed for 88 to 96 engines with compression ratios between 9:1 and 10:1.
585G: Designed for 88 to 95 engines with compression ratios from 10 to 10.5:1 and 100 and 107 engines at 9.7:1 to 10.5:1 compression.
625G: Cam set designed for 95 or larger engines with compression ratios between 10.0 and 10.75:1.
640G: Designed for engines of 95 or more with compression ratios between 10.5:1 and 11.5:1 used in S & S 124 engines.
675G: Designed for 120 or larger engines with at least 11:1 compression ratio.

The patented S & S Gear Drive Cams are a must in order to achieve the full potential from high performance Harley Davidson^® Twin Cam 88^® engines. Since the chain drive system used in stock Twin Cam 88 engines is not adequate to accurately control valve action at high RPM when using high lift cams and high performance valve springs, a different system was needed. The S & S Gear Drive System was developed to improve performance and to eliminate potential engine damage caused by failure of the chain and tensioner system. S & S Gear Drive Camshaft kits improve valve timing accuracy by eliminating timing chain lash as well as variations caused by the loose fitting stock cam drive sprockets. All stock chain drive components are replaced with S & S Gear Drive Cams and outer drive gears. This simple, effective solution reduces power loss by eliminating chain drag and allows more aggressive cam profiles and increased valve spring force to be used.

Notes:

Pinion shaft runout must be checked before installing S & S Gear Drive Cams.
A hydraulic press and other professional tools are required to install S & S Gear Drive Cams. Additionally, material must be removed from the inner surface of the stock gear cover. The stock crankcase will require clearance for S & S .625, .640, and .675 lift cams. S & S recommends that gear drive cams be installed by a professional mechanic.
Due to the inherent characteristics of gear drives, you may experience more valve train noise with gear driven cams. Oversized and undersized gears are available to help achieve correct gear lash. We have found that with 160 pounds of valve seat force, the S & S gear drive cams will perform well up to 6200 rpm. If higher rpm is anticipated valve springs that provide higher seat force should be used.

S & S 570G Cam Grind Complete Kit
Valve Timing Intake: 20°/40°
Valve Timing Exhaust: 55°/20°
Valve Duration Intake: 240°
Valve Duration Exhaust: 255°
Valve Lift: .570
Centerline Intake: 100.0°
Centerline Exhaust: 107.5°
Lift @ TDC Intake: .187
Lift @ TDC Exhaust: .179
Fits Big Twin 2007/Later & Dyna 2006

Mid-USA

Gear Drive Cam Kit, 640G Big Twin 99/06 Except 06Dyna Complete Kit

MID-66977

$949.00

In Stock

Shipping calculated at checkout.

Gear Drive Cam Kit, 640G Big Twin 99/06 Except 06Dyna Complete Kit
Application Information for S & S^® Camshaft for 1999/Later Big Twins
S & S offers a variety of cam grinds for 1999/Later Big Twin gear drive engines. With the exception of the bolt in 510G camshafts, S & S cams are high lift and were designed to take advantage of the extra flow of ported stock heads or S & S Super Stock^® cylinder heads. Due to the high lift of these cams, S & S adjustable pushrods and high performance valve springs are recommended.

510G: Designed as a bolt in cam for 88, 95, & 96 engines with compression ratios below 9.7:1. Intended primarily for stock heads that have not been ported.
546G: This is a short duration emissions cam with very little overlap to reduce emissions of unburned hydrocabons. It is intended as a replacement part for S & S emissions certified engines.
570G: Designed for 88 to 96 engines with compression ratios between 9:1 and 10:1.
585G: Designed for 88 to 95 engines with compression ratios from 10 to 10.5:1 and 100 and 107 engines at 9.7:1 to 10.5:1 compression.
625G: Cam set designed for 95 or larger engines with compression ratios between 10.0 and 10.75:1.
640G: Designed for engines of 95 or more with compression ratios between 10.5:1 and 11.5:1 used in S & S 124 engines.
675G: Designed for 120 or larger engines with at least 11:1 compression ratio.

The patented S & S Gear Drive Cams are a must in order to achieve the full potential from high performance Harley Davidson^® Twin Cam 88^® engines. Since the chain drive system used in stock Twin Cam 88 engines is not adequate to accurately control valve action at high RPM when using high lift cams and high performance valve springs, a different system was needed. The S & S Gear Drive System was developed to improve performance and to eliminate potential engine damage caused by failure of the chain and tensioner system. S & S Gear Drive Camshaft kits improve valve timing accuracy by eliminating timing chain lash as well as variations caused by the loose fitting stock cam drive sprockets. All stock chain drive components are replaced with S & S Gear Drive Cams and outer drive gears. This simple, effective solution reduces power loss by eliminating chain drag and allows more aggressive cam profiles and increased valve spring force to be used.

Notes:

Pinion shaft runout must be checked before installing S & S Gear Drive Cams.
A hydraulic press and other professional tools are required to install S & S Gear Drive Cams. Additionally, material must be removed from the inner surface of the stock gear cover. The stock crankcase will require clearance for S & S .625, .640, and .675 lift cams. S & S recommends that gear drive cams be installed by a professional mechanic.
Due to the inherent characteristics of gear drives, you may experience more valve train noise with gear driven cams. Oversized and undersized gears are available to help achieve correct gear lash. We have found that with 160 pounds of valve seat force, the S & S gear drive cams will perform well up to 6200 rpm. If higher rpm is anticipated valve springs that provide higher seat force should be used.

S & S 640G Cam Grind Complete Kit
Valve Timing Intake: 25°/60°
Valve Timing Exhaust: 65°/25°
Valve Duration Intake: 265°
Valve Duration Exhaust: 270°
Valve Lift: .640
Centerline Intake: 107.5°
Centerline Exhaust: 110.0°
Lift @ TDC Intake: .228
Lift @ TDC Exhaust: .214
Fits Big Twin 1999/2006 (except Dyna 2006)

Mid-USA

Gear Drive Cam Kit, 625G Big Twin 99/06 Except 06Dyna Complete Kit

MID-66976

$949.00

In Stock

Shipping calculated at checkout.

Gear Drive Cam Kit, 625G Big Twin 99/06 Except 06Dyna Complete Kit
Application Information for S & S^® Camshaft for 1999/Later Big Twins
S & S offers a variety of cam grinds for 1999/Later Big Twin gear drive engines. With the exception of the bolt in 510G camshafts, S & S cams are high lift and were designed to take advantage of the extra flow of ported stock heads or S & S Super Stock^® cylinder heads. Due to the high lift of these cams, S & S adjustable pushrods and high performance valve springs are recommended.

510G: Designed as a bolt in cam for 88, 95, & 96 engines with compression ratios below 9.7:1. Intended primarily for stock heads that have not been ported.
546G: This is a short duration emissions cam with very little overlap to reduce emissions of unburned hydrocabons. It is intended as a replacement part for S & S emissions certified engines.
570G: Designed for 88 to 96 engines with compression ratios between 9:1 and 10:1.
585G: Designed for 88 to 95 engines with compression ratios from 10 to 10.5:1 and 100 and 107 engines at 9.7:1 to 10.5:1 compression.
625G: Cam set designed for 95 or larger engines with compression ratios between 10.0 and 10.75:1.
640G: Designed for engines of 95 or more with compression ratios between 10.5:1 and 11.5:1 used in S & S 124 engines.
675G: Designed for 120 or larger engines with at least 11:1 compression ratio.

The patented S & S Gear Drive Cams are a must in order to achieve the full potential from high performance Harley Davidson^® Twin Cam 88^® engines. Since the chain drive system used in stock Twin Cam 88 engines is not adequate to accurately control valve action at high RPM when using high lift cams and high performance valve springs, a different system was needed. The S & S Gear Drive System was developed to improve performance and to eliminate potential engine damage caused by failure of the chain and tensioner system. S & S Gear Drive Camshaft kits improve valve timing accuracy by eliminating timing chain lash as well as variations caused by the loose fitting stock cam drive sprockets. All stock chain drive components are replaced with S & S Gear Drive Cams and outer drive gears. This simple, effective solution reduces power loss by eliminating chain drag and allows more aggressive cam profiles and increased valve spring force to be used.

Notes:

Pinion shaft runout must be checked before installing S & S Gear Drive Cams.
A hydraulic press and other professional tools are required to install S & S Gear Drive Cams. Additionally, material must be removed from the inner surface of the stock gear cover. The stock crankcase will require clearance for S & S .625, .640, and .675 lift cams. S & S recommends that gear drive cams be installed by a professional mechanic.
Due to the inherent characteristics of gear drives, you may experience more valve train noise with gear driven cams. Oversized and undersized gears are available to help achieve correct gear lash. We have found that with 160 pounds of valve seat force, the S & S gear drive cams will perform well up to 6200 rpm. If higher rpm is anticipated valve springs that provide higher seat force should be used.

S & S 625G Cam Grind Complete Kit
Valve Timing Intake: 20°/55°
Valve Timing Exhaust: 60°/20°
Valve Duration Intake: 255°
Valve Duration Exhaust: 260°
Valve Lift: .625
Centerline Intake: 107.5°
Centerline Exhaust: 110.0°
Lift @ TDC Intake: .189
Lift @ TDC Exhaust: .184
Fits Big Twin 1999/2006 (except Dyna 2006)

Mid-USA

Gear Drive Cam Kit, 570G Big Twin 99/06 Except 06Dyna Complete Kit

MID-66974

$949.00

In Stock

Shipping calculated at checkout.

Gear Drive Cam Kit, 570G Big Twin 99/06 Except 06Dyna Complete Kit
Application Information for S & S^® Camshaft for 1999/Later Big Twins
S & S offers a variety of cam grinds for 1999/Later Big Twin gear drive engines. With the exception of the bolt in 510G camshafts, S & S cams are high lift and were designed to take advantage of the extra flow of ported stock heads or S & S Super Stock^® cylinder heads. Due to the high lift of these cams, S & S adjustable pushrods and high performance valve springs are recommended.

510G: Designed as a bolt in cam for 88, 95, & 96 engines with compression ratios below 9.7:1. Intended primarily for stock heads that have not been ported.
546G: This is a short duration emissions cam with very little overlap to reduce emissions of unburned hydrocabons. It is intended as a replacement part for S & S emissions certified engines.
570G: Designed for 88 to 96 engines with compression ratios between 9:1 and 10:1.
585G: Designed for 88 to 95 engines with compression ratios from 10 to 10.5:1 and 100 and 107 engines at 9.7:1 to 10.5:1 compression.
625G: Cam set designed for 95 or larger engines with compression ratios between 10.0 and 10.75:1.
640G: Designed for engines of 95 or more with compression ratios between 10.5:1 and 11.5:1 used in S & S 124 engines.
675G: Designed for 120 or larger engines with at least 11:1 compression ratio.

The patented S & S Gear Drive Cams are a must in order to achieve the full potential from high performance Harley Davidson^® Twin Cam 88^® engines. Since the chain drive system used in stock Twin Cam 88 engines is not adequate to accurately control valve action at high RPM when using high lift cams and high performance valve springs, a different system was needed. The S & S Gear Drive System was developed to improve performance and to eliminate potential engine damage caused by failure of the chain and tensioner system. S & S Gear Drive Camshaft kits improve valve timing accuracy by eliminating timing chain lash as well as variations caused by the loose fitting stock cam drive sprockets. All stock chain drive components are replaced with S & S Gear Drive Cams and outer drive gears. This simple, effective solution reduces power loss by eliminating chain drag and allows more aggressive cam profiles and increased valve spring force to be used.

Notes:

Pinion shaft runout must be checked before installing S & S Gear Drive Cams.
A hydraulic press and other professional tools are required to install S & S Gear Drive Cams. Additionally, material must be removed from the inner surface of the stock gear cover. The stock crankcase will require clearance for S & S .625, .640, and .675 lift cams. S & S recommends that gear drive cams be installed by a professional mechanic.
Due to the inherent characteristics of gear drives, you may experience more valve train noise with gear driven cams. Oversized and undersized gears are available to help achieve correct gear lash. We have found that with 160 pounds of valve seat force, the S & S gear drive cams will perform well up to 6200 rpm. If higher rpm is anticipated valve springs that provide higher seat force should be used.

S & S 570G Cam Grind Complete Kit
Valve Timing Intake: 20°/40°
Valve Timing Exhaust: 55°/20°
Valve Duration Intake: 240°
Valve Duration Exhaust: 255°
Valve Lift: .570
Centerline Intake: 100.0°
Centerline Exhaust: 107.5°
Lift @ TDC Intake: .187
Lift @ TDC Exhaust: .179
Fits Big Twin 1999/2006 (except Dyna 2006)

S & S Motorcycle Gear Drive Cams

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