KB Hypereutectic Piston 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 6.0 cc RS004C0410 1989-1990 Chevrolet R2500 SuburbanFits GM

1989-1990 Chevrolet R2500 SuburbanFits GM 1965-91 TH400

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KB Hypereutectic Piston 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 6.0 cc RS004C0410 1989-1990 Chevrolet R2500 SuburbanFits GMProduct Description: Piston KB Series Hypereutectic 4. 280 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Plus 6. 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