P-85 Polaris Clutch Yamaha Setups

R

ryanwillden

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Sep 14, 2003
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What do you use? I have a 97 MM700 with triple pipes, and I'm curious what to run in my P-85 clutch?

Thanks
 
Why are you using the P-85 if I may ask? IMO, the YXR is just as good, actually better because of it's durability. I used to run the P-85's back in the Exciter days when Yamaha was still using the YPZ primary. At that time it was a better clutch for higher HP applications. Just curious............
 
I'm looking at other alternatives because my "durable" and annually rebuilt YXR clutch grenaded inside my hood, and caused about $1000 worth of damage. I don't want it to happen again. Hartman Inc. suggests not using the YXR clutch for that reason, and recommends the P-85. Any other suggestions are appreciated.
 
I have a P-85 that I am running on my SRX 1000 and it is holding up fine so far. Yes they are better then the YXR. Thicker sheeves, you can run cat or polaris weights easy to tune.
 
Both clutches work well. I've used them all, all, the yamaha clutch will out last anything but a TRA except the yammie is much easier to tune. The TRA's only issue is it's heavy and you have to learn how to shape ramps. The only trade off betwwen the P85 and the Yammie is you can move the spider on the P85, but you can change the roller size on the Yammie, does the same thing. The benefit of the Yammie is you can use ANY weight in it and change the rollers. The P85 will wear out buttons much faster than the Yammie, and if you've exploded a Yammie clutch, its because you were slipping the belt, got it hot, and it grenaded. P85's do the same thing.

For a 700 sx with pipes at sea level you could run 10 AL's with a 120/310 spring and a 48-42 in the back. 8800 rpms
 
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