RIDERACE RN1878 13T Bicycle Rear Derailleur Ceramic Pulley Guide Bearing Jockey Pulley for Shimano SRAM Road Bike - Black

• Durable Aluminum Alloy Construction: Crafted from high-quality aluminum alloy, this jockey wheel is lightweight yet durable
• Enhanced Performance & Aesthetics: With its sleek anodized finish and efficient design, this jockey wheel not only boosts performance but also adds a modern, high-performance aesthetic to your bike
• Smooth Ceramic Bearings: Equipped with advanced metal ceramic bearings, this jockey wheel ensures ultra-smooth rotation, reducing friction and enhancing gear shifting performance
• Hollow Design for Weight Reduction: Featuring a precision-engineered hollow design, this jockey wheel minimizes weight without sacrificing strength

Specifications:

• Model: RN1878
• Material: aluminum alloy + metal ceramic bearing
• Number of teeth: 13T
• Weight: about 13.3g
• Inner diameter: 6mm (5/4mm reducer sleeve)