KB Hypereutectic Piston 4.372" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.0 cc R10015L The different sizes available are

The different sizes available are intended for a class of cars traveling at certain speeds

1-1/2 in Tube

1963-1964 Studebaker 8E7D

Dodge Challenger 2008-10

KB Hypereutectic Piston 4.372" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.0 cc R10015L The different sizes available areProduct Description: Piston KB Series Hypereutectic 4. 372 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