Manufacturing Companies for Metal Extension Spring With Hook - 18TSRX Oversized pulley wheel System – Kactus Sports Detail:

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
18 tx suitable installed on SHIMANO XTR/XT/SLX M9000 / M8000 / M7000GS/M6000GS
Full 7075 aluminum alloy CNC lightweight pulley
18TSRX suitable for SRAM X1 XX1 GX NX
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.
Product detail pictures:


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"Based on domestic market and expand overseas business" is our improvement strategy for Manufacturing Companies for Metal Extension Spring With Hook - 18TSRX Oversized pulley wheel System – Kactus Sports, The product will supply to all over the world, such as: Austria, Birmingham, Salt Lake City, As an experienced factory we also accept customized order and make it same as your picture or sample specifying specification and customer design packing. The main goal of the company is to live a satisfactory memory to all the customers, and establish a long term win-win business relationship. For more information, please contact us. And It is our great pleasure if you like to have a personally meeting in our office.
We are a small company that has just started, but we get the company leader's attention and gave us a lot of help. Hope we can make progress together!
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