Factory source Shimano 6800 6870 9000 9070 - Chinese Professional Bicycle Parts Bike Carbon Fiber Cages 17t Bicycle Rear Derailleur Pulleys Wheel For Rear Derailleur – Kactus Sports

We insist on the principle of development of ‘High quality, Efficiency, Sincerity and Down-to-earth working approach’ to deliver you with great provider of processing for Chinese Professional Bicycle Parts Bike Carbon Fiber Cages 17t Bicycle Rear Derailleur Pulleys Wheel For Rear Derailleur, Therefore, we can meet different inquiries from different clients. Please find our website to check more information from our products.
We insist on the principle of development of ‘High quality, Efficiency, Sincerity and Down-to-earth working approach’ to deliver you with great provider of processing for 17t Bicycle Rear Derailleur Pulleys Wheel, Bike Rear Derailleur, Full Carbon Fiber Cages, Our focus on product quality, innovation, technology and customer service has made us one of undisputed leaders worldwide in the field. Bearing the concept of “Quality First, Customer Paramount, Sincerity and Innovation” in our mind, We have now achieved great progress in the past years. Clients are welcomed to buy our standard items, or send us requests. You are going to be impressed by our quality and price. You should contact us now!

12/18T Oversized pulley system

Save up to 45% friction resistance, compare to 11T pulley

Ceramic bearing version saves more than 2.2 watt power on average, compare to original transmission

Full carbon fiber cage

Full 7075 aluminum alloy CNC lightweight pulley

18TSRX suitable for SRAM X1 XX1 GX NX Ceramic bearing

Ceramic bearing version hybrid ceramic bearing version NSK steel bearing version

Weight: 59g

Ceramic bearing version weighs 1.2g less.

Why replace derailleur pulley

First, replace the original pulleys with these would improve the weak stretch of the original set, and make the up and down chain tension between guide wheel and cogs much more adequate.

Second, the number of contact tooth or control tooth between chain and cogs of 17T is more during gear shifting, the more contact, the stronger the control power. 

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

Long story short, with all the features mentioned above, you would save 2.2 watts or more with each pedaling. That’s the equivalent of shaving 100g off a 10KG bike.