My '98 MM600 uses an 89L-17641. Other Yamaha belts with identical dimensions are the 87X-17641, the 8CH-17641, and the SMA-8CA47.
I'm guessing they vary in hardness and materials. Which one do I want in a stock sled for mountain riding?
I'm guessing they vary in hardness and materials. Which one do I want in a stock sled for mountain riding?
yamaholic22
Active member
Use the 89L, it is a good belt and has a lot of grip. If you change belt model number you will also need to change clutch calibration or your rpms will be off.