Nowa przerzutka tylna do roweru szosowego do Shimano R5800 R6800 R7000 R800

Nowa przerzutka tylna do roweru szosowego do Shimano R5800 R6800 R7000 R8000 R9000 koło pasowe z włókna węglowego 17T ceramiczna przerzutka rowerowa 17T Carbon Fiber Road Bike Rear Derailleurs Bicycle Rear Derailleur Guide Wheel Pulley Cycling Accessories for R8000/8050/8070/9170/9150/9100Feature: 1. Effectively increase the power inertia of the chain. 2. Reduce the chain friction and make the chain stable. 3. Strengthen the structural safety of rocker arm support. 4. Speed change is stable and fast. 5. With the use of all-ceramic bearing, the friction power consumption is reduced, the climbing is labor-saving, and the tread frequency is effectively increased. 6. Compared with the traditional guide wheel on the market, this guide wheel is upgraded to bearing guide wheel, which can match the chain more precisely, reduce the lateral vacancy, shorten the response time of variable speed and improve the efficiency of variable speed.Specification: Name: Carbon Fiber Road Bicycle Rear DerailleurMaterial: Carbon Fiber Frame +7075 AluminumColor: black / redSpecifications: SD4Net weight: about 85gSize: about 141x85x41mm/5.55*3.35*1.61inApplicable model: highway / 20 inch folding carsBasket structure: 13T + 17TUse models:SD4 is suitable for R8000 / 8050/8070/9170/9150/9100Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement. 1 X Carbon Fiber Road Bicycle Rear Derailleur