11T/13T AL7075 CNC Bike Rear Derailleur Pulley – Ceramic Bearing

11T/13T AL7075 CNC Bicycle Rear Derailleur Pulley with Ceramic Bearing

Upgrade your mountain bike's drivetrain with this precision-engineered Rear Derailleur Bearing Pulley. CNC-machined from aerospace-grade AL7075 aluminum alloy and fitted with a smooth ceramic bearing, this pulley delivers ultra-quiet operation, reduced friction, and a noticeably more efficient pedaling experience — ride after ride.

Available in both 11T and 13T configurations, this colorful anodized pulley is designed for wide compatibility across mountain bike rear derailleurs, making it an easy and stylish upgrade for any rider looking to fine-tune their setup.

Key Features

• Material: AL7075 Aluminum Alloy body + Ceramic Bearing for durability and smooth rotation
• Options: 11T or 13T tooth count — choose the right fit for your derailleur
• CNC Machined: Precision CNC manufacturing for tight tolerances and consistent performance
• Ultra-Quiet Operation: Ceramic bearing minimizes noise and rolling resistance
• High Compatibility: Designed to fit a wide range of mountain bike rear derailleurs
• Colorful Anodized Finish: Vibrant color options add a stylish touch to your build
• Lightweight Design: AL7075 alloy keeps weight down without sacrificing strength
• Package Includes: 1 × Bicycle Rear Derailleur Bearing Pulley

Specifications

Note: Manual measurements may result in a ±2–3% size variance. Please review the size specifications carefully before purchasing. Slight color differences between product images and the actual item may occur due to lighting and monitor settings.

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Frequently Asked Questions

Q: What tooth count options are available for this rear derailleur pulley?

A: This CNC AL7075 bicycle rear derailleur pulley is available in both 11T (11-tooth) and 13T (13-tooth) configurations. Please select the correct tooth count compatible with your specific rear derailleur before purchasing.

Q: What type of bearing does this derailleur pulley use, and what are the benefits?

A: This pulley features a ceramic bearing, which offers lower rolling resistance, quieter operation, and excellent durability compared to standard steel bearings. The result is a smoother, more efficient drivetrain performance for mountain biking.

Q: Is this rear derailleur pulley compatible with my mountain bike?

A: This pulley is designed with high compatibility across a wide range of mountain bike rear derailleurs. We recommend checking the tooth count (11T or 13T) and the inner bore diameter against your current derailleur specifications to ensure a proper fit before ordering.

Q: How does the AL7075 aluminum alloy benefit this pulley?

A: AL7075 is an aerospace-grade aluminum alloy known for its exceptional strength-to-weight ratio. Using it in this derailleur pulley means you get a component that is lightweight yet highly durable, capable of withstanding the demands of regular mountain biking without adding unnecessary weight to your drivetrain.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.