KB Hypereutectic Piston 4.125" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 17.0 cc 1530A13 Shell surface also subjected to

Shell surface also subjected to BARCOL hardness test for resistance to penetration

Engineered to make strong power and torque throughout the RPM range with smooth mandrel-bent 1-1/2 primaries and 2

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Needle Response 0-Full Scale in 333 MillisecondsAuto Meter Gauges are the number one choice of professional racers worldwide

KB Hypereutectic Piston 4.125" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 17.0 cc 1530A13 Shell surface also subjected toProduct Description: Piston KB Series Hypereutectic 4. 125 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Plus 17. 00 cc Big Block Chevy 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