HUVNEXA 2pcs CNC Bicycle MECH Dropout, for Merida, for Big9 BIG 9 BIG 20 E-Thru MTB 12mm X 142mm Axle Gear Derailleur Hanger Carbon Frame Bike Bike Derailleur Hanger

Fitment: for Big9 BIG 9 BIG 20 E-Thru MTB 12mm X 142mm Axle Protects Gear Alignment: This bike derailleur hanger plays a key role in maintaining the alignment between the derailleur and the cassette. It helps protect shifting performance by absorbing impact in case of minor collisions or frame stress Supports Smooth Shifting: Acting as a structural link between frame and derailleur, the rear derailleur hook supports accurate gear transitions. It helps reduce noise, misalignment, and skipped gears, improving overall ride control and drivetrain reliability Simple Fit, Secure Hold: Designed for easy attachment to the dropout area, this bike frame hanger fits precisely and stays stable during use. It provides a firm mounting point that withstands regular cycling stress without loosening or slipping Quick Replacement, Immediate Effect: This bike rear hook installs quickly using basic tools. Once in place, it restores drivetrain alignment and shifting stability, making it an essential bicycle gear mount for long-term bike maintenance