Aluminum Alloy Bike Derailleur Pulley 11T 13T with Ceramic Bearing for MTB

Aluminum alloy rear derailleur guide pulley with 11T and 13T options. Features smooth ceramic bearing for efficient chain movement and reduced friction. Compatible with MTB bikes and 4/5/6mm setups. Durable, lightweight, and corrosion-resistant. Ideal upgrade or replacement for bike drivetrain performance.

Specifications: black, red, blue, gold, colorful

Features: Multiple diameter reduction, CNC technology, various color choices

Material: Aluminum alloy body + metal bearing (steel)

Notice: Please do not use the product violently to avoid affecting the use period of the product.