KB Hypereutectic Piston 4.160" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 6.0 cc 931072 Hardened and black oxide finished

Hardened and black oxide finished

2A/15 specs with tag placed on back of collar

This bolt on 409S stainless steel system for the 3

Single pattern/overlap reduced for restricted intake classes (Late model stock) 1/4 mile track/long rod applications

KB Hypereutectic Piston 4.160" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 6.0 cc 931072 Hardened and black oxide finishedProduct Description: Piston KB Series Hypereutectic 4. 160 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Minus 6. 00 cc Pontiac V8 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