KB Hypereutectic Piston 4.125" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 17.0 cc GBCSI Even with most of our

Even with most of our design work now being done with computers

1980-1981 Pontiac Firebird

Fits 18690/18790 Bearings

550 Degrees

or terminals receiving a two wire connection

KB Hypereutectic Piston 4.125" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 17.0 cc GBCSI Even with most of ourProduct Description: Piston KB Series 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