OEM Customized Groove Wheel Guide Bearings - 18TX Oversized pulley wheel System – Kactus Sports Detail:
14/18T Oversized pulley system
Save up to more than 60% chain friction resistance
Ceramic bearing version save over 2.4 watts on average, compared to original transmission.
Full carbon fiber cage
Full 7075 aluminum alloy CNC lightweight pulley
18TX suitable for SHIMANO XTR/XT/SLX M9000/M8000/M7000GS/M6000GS
SS RD convert to SGS RD
Ceramic bearing version hybrid ceramic bearing version NSK steel bearing version
Weight: 56g
Ceramic 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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We goal to understand excellent disfigurement from the manufacturing and supply the top support to domestic and abroad clients wholeheartedly for OEM Customized Groove Wheel Guide Bearings - 18TX Oversized pulley wheel System – Kactus Sports, The product will supply to all over the world, such as: Monaco, Chile, Jamaica, With the development and enlargement of mass clients abroad, now we have set up cooperative relationships with many major brands. We have our own factory and also have many reliable and well-cooperated factories in the field. Adhering to the "quality first, customer first, We are provideing high-quality, low-cost products and first-class service to customers. We sincerely hope to establish business relationship with customers from all over the world on the basis of quality, mutually benefit. We welcome OEM projects and designs.

Perfect services, quality products and competitive prices, we have work many times, every time is delighted, wish continue to maintain!
