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Race Spec (RS) Rear Sprockets feature our revolutionary Angled Mud Groove. This exclusive design creates a self-cleaning effect during operation, shedding away mud that would otherwise lead to horsepower loss and sprocket wear. With their precise CNC machining and unique layout, these grooves also allow an increase in tooth surface area of up to 40% over competing sprockets. As a result, contact with the chain is significantly improved, leading to a marked increase in sprocket life over other brands. That's the ProTaper difference.
This Part Fits:
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2006 | Yamaha | TTR250 | Base |
| 1991-1997 | Yamaha | WR250 | Base |
| 1998 | Yamaha | WR400F | Base |
| 1992-1993 | Yamaha | WR500 | Base |
| 1993-1998 | Yamaha | YZ125 | Base |
| 1993-1998 | Yamaha | YZ250 | Base |
| 1998 | Yamaha | YZ400F | Base |
| 1984-1990 | Yamaha | YZ490 | Base |
We use UPS, FedEx, DHL, and USPS for deliveries. We are not responsible for any shipping problems and shall not be held liable for any "reasonable" delay beyond our advertised delivery time-frames. Shipment by Ground Courier can take up to 15 business days for delivery. Express Courier can take up to 3 business days for delivery. Shipping time frames are once the order has been processed. Due to high demand, order processing can take 5 to 7 business days.
