KB Hypereutectic Piston 4.290" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 12.0 cc 2120014 2-1/2 in ID Springs

2-1/2 in ID Springs

This water pump pulley is designed with dual mounting patterns for both Chevy and Ford installation

2") blocks without manifold spacers and accepts standard height distributors

2007 Chevrolet Silverado 1500 LT

Requires Aftmkt Calib

KB Hypereutectic Piston 4.290" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 12.0 cc 2120014 2-1/2 in ID SpringsProduct Description: Piston KB Series Hypereutectic 4. 290 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Plus 12. 00 cc Big 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