CM-20 is a perforated steel core gasket which allows heat to be drawn away from the combustion ring while dissipating heat evenly across the gasket surface
Hot spots that lead to head gasket failure are eliminated
CM-20's elastomer surface provides maximum sealing characteristics and sealing around passages that carry oil
All gaskets listed are .043 thick and feature a steel fire ring at the combustion area to help prevent blown head gaskets
Cometic Head Gasket (Pair) 3 5/16 or 3 7/16 Bore Size Fits Panhead 1948/1965 Replaces HD# 16770-48
High Performance Head Gaskets Bt Evo 84/99 Spt 1200Cc 88/L* 4.000 Bore .040 C9880
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
High Performance Head Gaskets Tc 99/L* 3-7/8 Big Bore.060"Tr Multi-Layer Steel Mfg#C9135
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
High Performance Head Gaskets Tc 99/L* 3-7/8 Big Bore.045"Tr Multi-Layer Steel Mfg#C9132
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
High Performance Head Gaskets Tc 99/L* 3-7/8 Big Bore.040"Tr No Hd Rpls #.....Cometic C9722
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
High Performance Head Gaskets Tc 99/L* 3-7/8 Big Bore.030"Tr No Hd Rpls #.....Cometic C9721
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
High Performance Head Gaskets Bt Evo 84/99 Spt 1200Cc 88/L* 3-3/4"Big Bore.040"Thick C9695
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
High Performance Head Gaskets Bt Evo 84/99 Spt 1200Cc 88/L* 3-3/4"Big Bore.030"Thick C9694
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
High Performance Head Gaskets Bt Evo 84/79 Spt 1200Cc 88/L* 3 13/16"Big Bore.040"Tk C9693
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
High Performance Head Gaskets Bt Evo 84/99 Spt 1200Cc 88/L* 3-13/16"Big Bore.030"Tk C9692
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
Cometic Gasket
Sold as a Pair 3-13/16" (Big Bore) bore size, .030 thickness Fits Big Twin Evolution 1984/1999 & Sportster Evolution 1200cc 1988/Later
High Pressure Head Gaskets Bt Evo 84/99 Spt 1200Cc 88/L* 3-5/8"Big Bore.040"Thick C9691
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
High Performance Head Gaskets Bt Evo 84/99 Spt 1200Cc 28/L* 3-5/8"Big Bore.030"Thick C9690
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
High Performance Head Gaskets Bt Evo 84/99 Spt 1200Cc 88/L* 3.512"Stk Bore.040"Thick C9689
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
High Performance Head Gaskets Bt Evo 84/99 Spt 1200Cc 88/L* 3.512 Stk Bore.030"Thick.C9688
3 Piece Design
Extreme Sealing Technology (EST) will eliminate head gasket problems
These are the best that we have ever seen for everything from 8.5:1 compression ratio up to 15:1 plus
Three piece design features an aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
To ensure the utmost sealing power, the outer layers are embossed at the cylinder bore and the oil drain backs provide a seal so good that O rings are not required
Distributes heat exceptionally well from the head to the cylinder, thus eliminating hot spots that would normally cause a head gasket failure
Head Gasket Cmf-20 W/Fire Ring Shovelhead 1966/L, 3-1/2" Bore Rpls Hd 19770-66B Mfg# C9604-1
CM-20 is a perforated steel core gasket which allows heat to be drawn away from the combustion ring while dissipating heat evenly across the gasket surface
Hot spots that lead to head gasket failure are eliminated
CM-20's elastomer surface provides maximum sealing characteristics and sealing around passages that carry oil
All gaskets listed are .043 thick and feature a steel fire ring at the combustion area to help prevent blown head gaskets
Cometic Head Gasket (Each) 3 7/16 or 3 1/2 (Stock Bore) Fits Shovelhead 1966/1984 Replaces HD# 16770-66B
V-Twin Manufacturing 1984-1999 Evolution Black Teflon Head Gasket - Set Cylinder HEAD GASKETS. Fits: 1984-99 80 Evolution Head, Teflon Coated (.045 ) Black Teflon Fire Ring
V-Twin Manufacturing 1984-1999 James Graphite Fire Ring Head Gasket - Pack Cylinder HEAD GASKETS Fits: 1984-99 80 Evolution Head, .045 Blue Teflon Fire Ring