12T Ceramic Rear Derailleur Guide Wheel

12T Ceramic Rear Derailleur Guide Wheel – AL7075 MTB & Road Bike

Upgrade your bike’s performance with this 12T ceramic rear derailleur guide wheel, engineered for smooth and precise shifting. Made from high-quality AL7075 aluminum alloy with ceramic bearings, it delivers ultra-low friction, lightweight strength, and enhanced durability for long-term cycling performance.

Designed for versatility, this guide wheel fits most rear derailleurs on the market, supporting 7/8/9/10-speed systems. The innovative thick–thin tooth design helps reduce chain expansion, improve shifting accuracy, and minimize chain drop — ensuring smoother and faster gear changes during every ride.

Weighing only about 11g with a 48mm diameter, it’s compatible with 4mm, 5mm, and 6mm axles. Available in seven vibrant colors — black, red, blue, and gold — this ceramic jockey wheel is the perfect blend of style and performance for mountain bikes, road bikes, and folding bikes alike.

Product information:

[Product name] 12T positive and negative tooth ceramic rear dial guide wheel

[Color] Seven colors black red blue gold

[Material quality] AL7075 aluminum alloy/ceramic bearing

【Weight】About 11g


[Diameter] Approximately 48mm

[Installation size] 4/5/6mm axis

[Advantages] Applicable to most rear dials on the market, supporting 7/8/9/10 speed. One thick gear and one thin gear are convenient to fill the chain gap and reduce the expansion of the chain so as to speed up the speed change and reduce the chance of chain drop.