Product Description 2012-13 Arctic Cat Torsion spring cap option that is used with the STM billet helix's. Allows the use of the Arctic Cat torsion spring and has holes for spring load...

STM tuner helix (only for STM secondary)

STM

129.99$ CAD

STM tuner helix (specify application, only for STM secondary) 46/36

Twister Torsional conversion Kit 2012-2015 procross

425.00$ CAD

Twister Torsional conversion Kit 2012-2015 procross Comes with a 46/36 helix (custom available on demand)

STM tuner Secondary clutch (11.25") for High HP application

STM

STM tuner Secondary clutch (11.25") for High HP application. -Much better belt durability -Much better performance both on trail and at race track. -BOTH STM clutches are on all our Pro mods and...

Arctic Cat style secondary spring Black & Lime For STM

STM

59.99$ CAD

Arctic Cat style secondary spring for STM Secondary Clutches