KB Hypereutectic Piston 3.940" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 6.0 cc SC04501 1965-1966 Mercury Commuter

1965-1966 Mercury Commuter

1973-1974 GMC K25/K2500 Pickup

Borgeson 55-57 Chevy Pivoting Floor Mount 909012

1986-1986 Pontiac Parisienne

KB Hypereutectic Piston 3.940" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 6.0 cc SC04501 1965-1966 Mercury CommuterProduct Description: Piston KB Series Hypereutectic 3. 940 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Plus 6. 00 cc Small Block Mopar 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