KB Hypereutectic Piston 4.030" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 7.0 cc DX2650K FF XR292 R-10

FF XR292 R-10

860 in Bore

5 to 3 in ID

This bolt-on 409S stainless steel system features a single 3

Improve Horsepower And Torque

KB Hypereutectic Piston 4.030" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 7.0 cc DX2650K FF XR292 R-10Product Description: Piston KB Series Hypereutectic 4. 060 in Bore 5 64 x 5 64 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