The helix on some of the ’06 and newer Arctic Cat models with the new ACT secondary is now a cast / one piece version. We still use...

This is a required component for use with the tubular, two piece APT series helixes for the 2012-2015 Procross

Using different thickness and diameter shim washers under the spider is something racers sometimes use for belt grip and engagement...

Spider shims for the 2016+ Arctic Procross are a different diameter and fit.   Using different thickness and diameter shim washers...

Note: order 3 packs for a set of 3 flyweights This pkg of hardware is a replacement pack. They are sold as a pack for each quick adjust...