# ProTaper Yamaha Rear Black Sprocket - 49 Teeth

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.

-   Countersinks automatically center sprocket to hub during installation, no hub center guide needed
-   Deep penetrating anodized finish protects from corrosion and improves wear resistance
-   Exclusive mud-groove design on both sides of every tooth
-   Precision CNC-machined to the strictest tolerances
-   7075-T6 heat-treated billet aluminum
-   Made in USA

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

## Details

- **Price:** 156.57 CAD
- **Vendor:** ProTaper
- **Type:** Sprockets

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 156.57 CAD | In stock |

## Images

- User 1
- User 3

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/protaper-yamaha-rear-black-sprocket-49-teeth)
> Updated: 2026-06-27