KB Hypereutectic Piston 4.290" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.0 cc 1425004 This produces lower air intake

This produces lower air intake temperatures which results in added horsepower and the ability to add more timing advance with less detonation

The V belt length from bolt-in mounting bracket to the buckle has adjustable length of 24 to 33 inches

2001-2005 GMC Sierra 1500 HD

consistent and reliable trans-brake release

KB Hypereutectic Piston 4.290" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.0 cc 1425004 This produces lower air intakeProduct Description: Piston KB Series Hypereutectic 4. 290 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