2 new ??'s

I read that yamaha belts are quite hard, which is why they last so long, but that hardness also causes a lot of slippage. the 8DN anyway. I have always used oem belts also but was just wondering about others.
 
I oly run OEM 8DN belt in my little sxr700 red head......I have been in radar runs and get 116MPH with the stock belt. I am in the 120's for top speed with no slipage.
I would not trust any other belt in my sled.
 


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