Axtell pistons in std and oversize, stock or stroker. For Sportster and Buell 1200 with 20 degree dome. Unique 30 degree assymetric dome Angle Top pistons that makes it possible to run higher compression ratio without detonation or pinging. The simple modification that is needed of the combustion chamber improves the portflow and turbulence. That means more torque and horsepower in all rpm ranges for a fair investment.

• 3-1/2″ +.005 and +.010 Sportster & Buell 1200, 20 degree dome, 1.200″ compheight, 11:1 compratio with 78cc 1200 combustion chamber
• 3-1/2″ +.030 Evolution stock stroke Angle Top 1.400″ compheight, 10:1 compratio
• 3-1/2″ +.005 and +.010 Evolution 4-5/8 stroke Angle Top 1.200″ compheight, 10,1:1 compratio
• 3-5/8″ std and +.030 Evolution 4-5/8 stroker Angle Top 1.200″ compheight 10,25:1 compratio