15T Ceramic Jockey Wheel – AL7075 CNC Aluminum for MTB Rear Derailleur

Enhance shifting performance with a high‑precision 15T jockey wheel designed for MTB rear derailleurs.

• Durable AL7075 aerospace‑grade aluminum CNC‑machined for strength and weight savings.
• Premium ceramic bearings provide super‑lubricated, low‑friction operation.
• Fits 4 mm, 5 mm, and 6 mm axle standards – compatible with 7‑11 speed systems.
• Easy installation; replace the original pulley with a matching or smaller size.
• Colorful finish adds a visual upgrade while maintaining functional reliability.