KB Hypereutectic Piston 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.0 cc NG21 1-3/4 in Outlet

1-3/4 in Outlet

Autometers Race Proven Air-Core Electric Instruments Provide Quick And Accurate Readings While Keeping Hazardous Fluids Outside Of The Vehicle

Spring Rate: 160 lbs

Black Powder Coat / Natural

KB Hypereutectic Piston 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.0 cc NG21 1-3/4 in OutletProduct Description: Piston KB Series Hypereutectic 4. 280 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