KB Hypereutectic Piston 4.290" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.0 cc 2010428 For Big Block Chevrolet engines

For Big Block Chevrolet engines originally equipped with exhaust valve rotators

1/8 in NPT Female Ports

ΓÇóMulti-fuel compatible: Approved for use with leaded and unleaded Gasoline

81 in Long

Other features include quad 4

KB Hypereutectic Piston 4.290" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.0 cc 2010428 For Big Block Chevrolet enginesProduct Description: Piston KB Series Hypereutectic 4. 290 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Minus 8. 00 cc Mopar B Series 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