R7 / R6 Aluminum Alloy Rear sprocket (7075-T6)
■ Chain： 520 / 525
■ Number of teeth： 39 ~ 55
(Please contact us if you need other number of teeth)
- Made of 7075 aluminum alloy material, by CNC cutting and manufacturing
- The tooth design is conducive to chain engagement,improving smoothness and durability.
- The basket design is lightweight, improves transmission efficiency under the wheel, and reduces horsepower loss.
- The surface treatment uses a special hardened anode coating to improve surface hardness and increase service life.
- It is treated with a special coating to reduce sludge sticking.
- Please read the store announcement carefully before placing a bid .
- Kindly to send the message to us if you have any question .
- This product is insured with NTD 20,000,000 product liability insurance .