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17TSR Carbon Fiber Bike Rear Derailleur Pulleys Jockey Wheel Ceramic Bearing Ultralight Bicycle

Product description

*12/17T super large size guide wheel set system

*Saves 45% chain friction resistance compared to 11T guide wheels”

*Ceramic bearing version saves more than 2.2 watts of average power compared to the original transmission system

*Full carbon fiber guide arm

*Full 7075 aluminum alloy CNC cutting lightweight guide wheel and TC4 titanium alloy spindle

*17TSR suitable for SRAM RIVAL FORCE RED

*Ceramic Bearing Version Hybrid Ceramic Bearing Version NSK Steel Bearing Version

*Weight: 63 grams

*The ceramic bearing version is 1.2 grams lighter than the steel bearing version

Product Information

Why replace derailleur pulley wheel

Firstly, porous spring position limit could adjust back tension largely, improve the weakness of original weak stretch, and make the up and down chain tension between guide wheel and cogs much more adequately.

Secondly, the contact tooth number or control tooth number between chain and cogs of rear derailleur 17T is more during gear shifting, it just like to pinch the middle and two sides of some sticks, the larger the control lever, the stronger the control power.

Lastly, after redesign the cage’s rotation curve, the distance between upper guide wheel and the cogs is improved.

Installation steps

1.Fist, find the screw of pulley wheel cage in the back of rear derailleur

2.Remove the screw with cross tip Screwdriver

3.Pull out the screw

4. Remove and grease the screw and spring before assembly the new 12-17T carbon cade

5. We suggest fix the spring in the left hole for the first time assembly

6. Grease the titanium axle before assembly new cage

7. Push the spring in the hole

8. Clockwise rotate the cage andpush into rear derailleur

9. Push all when make sure the positioning post right in the position

10. Push back the screw in the hole and fix with cross tip screwdrive

11. Finish