KB Auto Hyper Hypereutectic Piston - 4.125 in Bore - 5/64 x 5/64 x 3/16 in Ring Grooves - Plus 17.00 cc - Big Block Chevy (Set of 8) GBD2 Beyond the racing industry

Beyond the racing industry

rocker stud diameter: 7/16

1999-2009 Chevrolet Silverado 2500

They are precision machined from 6061-T6 billet aluminum for strength and durability

KB Auto Hyper Hypereutectic Piston - 4.125 in Bore - 5/64 x 5/64 x 3/16 in Ring Grooves - Plus 17.00 cc - Big Block Chevy (Set of 8) GBD2 Beyond the racing industryProduct Description: Piston Auto Hyper Hypereutectic 4. 125 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Plus 17. 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