4-Stroke clutch kits
I do not have any clutch kits for 4-stroke sleds.    You don’t see any 4-stroke models on this website, there are no clutch kits here.  If the engine has an intake and exhaust valves, I don’t make a clutch kit for the sled with that category of engine.
My sphere of operations in particular are 2-stroke snowmobiles.
For Four-strokes, I don’t have any parts, no springs, no helix’s, nothing, not even advice.
Please contact Ryan Wilder at www.wilderperformance.com for one who specializes in 4-strokes. If you ask me, I’m just going to link you to this page anyway.

REV and MXZ sleds
Sorry, there are no clutch parts for those two sled platforms anymore.
The MXZ clutch wear parts were discontinued by 2007.
The REV clutch parts were discontinued in 2015. The aftermarket parts have been discontinued since 2021.
I don’t have anything for the REV & MXZ platforms.

You wont find anything in the aftermarket anymore.
I don’t have any TRA ramps left over, no helix, nothing.  I have no spare parts.  What I did not sell years ago, went to the recycle.

If you find a used clutch kit from another vendor, I don’t know what they are like. I’ve never tested with a competitors clutch kit, doing that is a waste of time/effort/energy, to this day.

If you ask me what were my helix angles, nope, I’m taking them to the grave with me.