KB Hypereutectic Piston 4.030" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 7.0 cc DX2650K 860 in Bore

860 in Bore

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

multi-viscosity or straight grade motor oils

Use only stock ratio rocker arms

Solid enough to endure the roughest rides

KB Hypereutectic Piston 4.030" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 7.0 cc DX2650K 860 in BoreProduct 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