Rear Sprocket Steel 51t 520 Blk Yam

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