Rear Derailleur Effortless Shifting 21-Gear Rear Derailleur Mountain Bike Gear Mechanism Precise Adjustment Cycle Gear

Wide Compatibility: Designed for mountain bikes, this essential cycle component is compatible with 6, 7, and 8-speed systems, offering versatility for 18 or 21-speed setups.

Effortless Shifting: Experience crisp and reliable gear changes thanks to the efficient design of this drivetrain part, ensuring a effortless change between speeds on any terrain.

Long-Lasting Construction: Built with a sturdy metal main frame and wear-resistant plastic guide wheels, this gear mechanism is engineered for longevity and consistent performance.

Precise Adjustment: Features fine-tuning screws that allow for exact calibration, ensuring trail bike rear derailleur maintains perfect alignment and minimal chain wear.

Easy Installation: Available in both direct-mount (eyelet) and hanger-mount (hook) versions to fit different frame types, making this cycle rear gear mech a straightforward enhance or replacement.