Ski Doo TRA Primary Drive clutch MXZ 670, MXZ 670 HO, Formula Z 670, Formula SS 670, Formula Deluxe 670, Grand Touring 670 SE, CV Tech PB80 1100-0254 Power Bloc

- 2 year Warranty / rated and tested to 320HP / Precision Balanced
- Electric Start compatible, just bolt your stock ring gear onto this clutch.
- 3.0 lbs lighter than a OEM Ski Doo clutch. Center of mass is considerably closer to the motor and the centerline of the crankshaft. This
provides
superior throttle response, faster revving, allowing for lower engagement without hesitation and resulting in better applied traction.
- Used exclusively by MCB on all their personal and shop sleds
- Considerably smoother than any other clutch we have ever used.
- More torque sensing than an OEM clutch. Senses track spin and overall track load and makes seem less adjustments, holding constant RPM. Low end
sensing has an almost traction control like feeling.
- Excellent deep snow, take off and load sensing!
- Considerably less sensitive to snow conditions than an conventional flyweight clutch!
- Easily tuned. Weights can be changed trail side with a 36mm socket and the holding tool (sold separately). The face cover plate is not under any
spring load, this allows weight changes to be made in minutes with a flat bladed screwdriver. The spring cup / retention design is identical to a
Ski Doo design with the addition of a much better spring and spring cup guide tower for easy assembly.
- Very simple, yet the most effective clutch we ever used or tested! 50% less moving parts as compared
to OEM clutches. No flyweights. no rollers, no thrust washers, No arms. Weight adjustable sliding blocks have constant leverage at all shift points
/ speeds as compared to the exponential leverage loss OEM flyweight designs! Simply the best, most durable easily tunable clutch we have used or
tested in our 26 years of business and 40 years of snowmobiling!
Available for almost all Arctic Cat, Polaris, Ski Doo and Yamaha models. Call the tech line with questions or applications.
- For Arctic Cat's the clutch comes with a new bolt.
- This clutch does require it's own puller which will be a drop down option to purchase at checkout.

Replaces Your stock TRA clutch directly, same belt, no adjustments needed to the secondary clutch.