S&S CYCLE 640 EZ Easy Start Cam Kit, 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
S&S CYCLE 640 EZ Easy Start Cam Kit, 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
S&S CYCLE 640 Series Cam Kit, 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
Now S&S heads are available to be used with stock-style flat-top pistons
Kits are fully assembled, and include stainless steel valves and high-lift (.585") springs
Intake manifold and gasket kits are sold separately; gasket kits contain head gaskets, base gaskets and exhaust pipe gaskets (rocker box gaskets are not included due to the variety of available rocker box styles)
Optimized for smaller displacement engines
Slight increase in compression (8.8:1 in an 80" motor) with 82cc chamber volume
Port design increases flow, while maintaining velocity
Set up for .585" maximum lift
EFI compatible
Available in silver powder-coat or black powder-coat finish
Forged pistons - coated piston skirts with measurement window and S & S logo
Forged pistons have larger than stock valve pockets and accepts up to 2.00" valves
Available in silver powder coat or wrinkle black powder coat finish
Kit includes S & S 1250cc pistons with rings and wristpins, S & S 39/16" bore cylinders, MLS head, base and exhaust gaskets, assembly lube and instructions