KB Piston Hypereutectic 4.250" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 26.0 cc R010003XXXXL Integrated jet pump assembly allows

Integrated jet pump assembly allows retention of factory drivers side fuel pickup

1/8" thick polycarbonate

Mounting instructions included with kit

increased corner exit

KB Piston Hypereutectic 4.250" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 26.0 cc R010003XXXXL Integrated jet pump assembly allowsProduct Description: Piston KB Series Hypereutectic 4. 250 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Plus 26. 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