*****KIT COMES WITH HELIX, 2 SPRINGS, ENGAGEMENT SHIMS, WEIGHTS, AND SCREWS****

Base weight 77 grams and can add up to 18 grams more

Adjustable weight using different length hardware

Billet helix is cut for overdrive and spring pocket depth cut deeper to prevent spring coil bind

Depending on which companies tune, the range roughly 240hp to 350hp

******ALL PARTS ARE MADE IN THE USA*****