Dolvitrny 18T Rear Derailleur for-Jockey Wheel with Ceramic Bearing for SRAM R8000 R7000, Oversized Silent Shifting Roller Alloy Hollow Deep Tooth

• 18T HOLLOW GUIDE WHEEL: Lightweight aluminum alloy construction with ceramic bearings delivers smooth, silent rotation and extended service life for road bike derailleurs.
• DEEP TOOTH CHAIN ENGAGEMENT: Precision-toothed profile improves chain retention and minimizes operational noise during shifting and pedaling.
• CERAMIC BEARING TECHNOLOGY: Self-lubricating ceramic bearings reduce friction, require no maintenance, and support consistent performance varying conditions.
• BROAD SPEED COMPATIBILITY: Designed for reliable function with 9-speed, 10-speed, and 11-speed drivetrains-perfect for competitive cyclists and daily riders alike.
• ECENTRIC OPTIMIZED DESIGN: Thoughtfully offset geometry decreases chain drag and refines derailleur response for crisper shifts and enhanced drivetrain efficiency.

Features: *18T Hollow Guide Wheel: Features a lightweight and long-lasting design with pottery and porcelain bearings for smooth and silent operation. *Deep Tooth Design: Enhances chain grip and reduces noise for efficient shifting and rotation. *pottery and porcelain Bearings: Offers self-lubricating and maintenance-free performance with superior longevity and reduced noise. *Compatibility: Works seamlessly with 9-speed, 10-speed, and 11-speed systems for multi-purpose use. *Eccentric Design: Reduces chain friction and improves shifting performance for a smoother ride. Specifications: *Product Name:bearing *Material:aluminum alloy, pottery and porcelain *Color:Not Found Color Information *Size:7.3*0.5cm Package Content: 1*guide wheel + 1*set of accessories