KB Hypereutectic Piston 4.155" Bore 1/16 x 1/16 x 3/16" Ring Grooves - Minus 7.0 cc BR10021 The "Pure Unadulterated POWER" of

The "Pure Unadulterated POWER" of DynoMax® Ultra Flo

Open Center Port

Polyurethane bump stop is weather resistant and easily adjustable by adding packers to the inner ring

Very true and strong

For use in all AFCO rebuildable shocks with the perfect blend of viscosity and performance

KB Hypereutectic Piston 4.155" Bore 1/16 x 1/16 x 3/16" Ring Grooves - Minus 7.0 cc BR10021 The "Pure Unadulterated POWER" ofProduct Description: Piston KB Series Hypereutectic 4. 155 in Bore 1 16 x 1 16 x 3 16 in Ring Grooves Minus 7. 00 cc Small Block Chevy Set of 8 Created from a high silicon aluminum alloy, KB Performance pistons are lightweight to improve throttle response and RPM changes while still being strong enough to withstand high compression and high temperatures. Each piston is engineered with race ready features like high upper compression ring locations, gas