KB Piston Hypereutectic 4.156" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 15.0 cc 91609059 44 mm Thick

44 mm Thick

25" Stroke Cylinder

Each Fel-Pro gasket

in-line pump

features an air bleeder valve to eliminate air lock

KB Piston Hypereutectic 4.156" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 15.0 cc 91609059 44 mm ThickProduct Description: Piston KB Series Hypereutectic 4. 156 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Minus 15. 00 cc Oldsmobile 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