Venom Products AC960033 Twin Trax Helix for Tied Clutch - 71-55 x 71-57

For Tied Clutch on 2012-15 Arctic Cat.
1st Track - 71-55ER, Type - .46.
2nd Track - 71-57ER, Type - .46.

Developed to produce a quick upshift and improved backshift for excellent throttle response. Dual-angle-option helix offers fine-tunin for changing conditions. Available in a variety of multi-angles for almost any application. ER helixes are for Ski-Doo and Polaris machines with engine reverse. Helixes for TIED8 and TSS-04 clutches are NOT interchangeable. Type Example:Type F = full progressive; type .46 = .46 progressive. Sold each.