Features:
- The only dual material rear sprocket available for both street and off road applications
- Steel teeth last up to 3 times longer than aluminum
- 7075-T651 Aluminum core, lighter than steel
- CNC machined, providing perfect fit on the wheel
- Larger tooth radius reduces chain friction and extends chain life
- U. S. and European patented
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Brand Number: RST-736525-39-BLKUPC: 8592165076478