Moose Racing Piston Kit by CP Pistons MP4028 12.5:1

Features Feature X-style forgings for ultimate strength, minimizing friction, durability, power, and weight reduction Full radius dome designs maximize quench while eliminating hot spots that promote detonation Internal bracing maximizes durability while decreasing friction in the pin assembly With the pistons each kit includes wrist pins, rings, & circlips as required Made in the U.S.A.