KB Hypereutectic Piston 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 7.0 cc 103182 Length stated is overall length

Length stated is overall length

Valve spring upgrade required

1985-1999 Ford F-250

1963-1963 Ford Ford 300

KB Hypereutectic Piston 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 7.0 cc 103182 Length stated is overall lengthProduct Description: Piston KB Series Hypereutectic 4. 040 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