Vbestlife AX12 Speed Mountain Bike Transmission Kit - High-Performance Flywheel & Chain Set for Smooth Gear Shifting | Perfect for Trail Riding, Commuting & Off-Road Cycling Adventures

Specification: Item Type: Mountain Bike Speed Transmission Flywheel: 12 Speed Mountain Bike Clip Flywheel Material: High Tension Steel Plate , Aluminum Frame Number of Teeth: 11T-50T Gear Ratio: 11-13-15-17-19-21-24-28-32-36-42-50T Color: Silver Transmission: Mountain Bike 12 Speed Transmission Material: Aluminum Alloy Chain: PYC 12 Speed Chain Specification: 1/2in x 11/128in Package List: 1 x Flywheel 1 x Thumb Derailleur 1 x Rear Derailleur 1 x Chain 2 x Hook and Loop Note: After installation, check whether the flywheel is locked and aligned

[PROFESSIONAL DESIGN]This high-quality thumb derailleur adopts an ergonomic design, which makes your use more comfortable and reflects the professionalism of technology.

[EASY INSTALLATION]This high-performance bicycle rear derailleur is simple in design, easy to install and disassemble, and easy to use, making your use easier and saving time and energy.

[HIGH PERFORMANCE]The transmission efficiency of the mountain bike transmission kit is very high and very practical. Good quality, durable, can be used for a long time, bring a lot of convenience,

[PROFESSIONAL MADE]This high-performance rear derailleur 50T flywheel is made of high-tensile steel plate, quenching process, tempering hardening treatment, multi-layer electroplating anti-rust treatment, which further reflects the technical professionalism.

[PERFECT EXPERIENCE]The rear derailleur of the bicycle is tempered and hardened, and multi-layer electroplating anti-rust treatment can give you a better experience.