Stylish blue axle blocks to replace the original. Easy replacement One teeth rear sprocket offset for quick rear wheel exchange with different sprocket size (+/- 1 teeth) After offset change, no need to adjust chain slack
Description
Stylish blue axle blocks to replace the original. Easy replacement One teeth rear sprocket offset for quick rear wheel exchange with different sprocket size (+/- 1 teeth) After offset change, no need to adjust chain slack
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