KB Hypereutectic BBM Flat Top Piston Set 4.380 Bore -5cc Drive Shaft 1975-1979 GMC Jimmy

1975-1979 GMC Jimmy

1962-1963 Shelby Cobra

poor headlight aim

Two-piece aluminum clamps dress up wiring or hard lines

Will fit ALL models without a fifth-wheel hitch and will also fit most side mount fifth-wheel hitch applications

KB Hypereutectic BBM Flat Top Piston Set 4.380 Bore -5cc Drive Shaft 1975-1979 GMC JimmyProduct Description: Piston KB Series Hypereutectic 4. 380 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Minus 5. 00 cc Mopar RB 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