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Yamaha 660 Middle Drive Gear / Diff Plate
- Replaces stock weak diff plate
- Located inside the engine
- Must split cases to replace
- Recommended for larger tires, racing, rock crawling
The middle drive gear diff plate was designed by Weller Racing due to many engines having failures with the stock bearing support. We took the factory one and created a billet masterpiece out of 7075 aerospace aluminum. To this day we haven't seen on of ours break. There may be others on the market, but you should buy it from the guys that invented it!
Customers say that it works on the Yamaha Grizzly also