Super Stock® Heads for 3 1/2'' and 3 5/8'' Bore

A specially shaped combustion chamber and contoured piston dome are what make these heads produce power. The increased "squish" area of this design sets up a controlled turbulence in the combustion chamber. That turbulence improves flame travel for a more efficient burn and reduced detonation. Pistons are available to achieve various compression ratios.

• 1986-2003 Sportster®
• 1994–'02 Buell®
• Machined with a stock bolt pattern
• Larger, more open combustion chamber presents less resistance to air flow around the valves
• 2.000 inch intake valves and 1.605 inch exhaust valves
• Special "cast-to-shape" intake ports with a special directional fin for improved air flow
• Precision CNC machined from heat treated aircraft quality aluminum castings
• Complete head assembly with valves and S&S .640 inch lift springs
• Choose finish