The AT12 speed rear derailleur is designed for a 1x12 speed drivetrain.

H/L and B limit screws provide great adjustability.

The long cage allows a cassette up to 52T.

Only designed for M10x1 standard mounting.

Model: RD-A12-X

Speed: 1*12S

Main material: Aluminum

Cage material: Steel

Cage length: Extended

Max gear range: 11T-52T

Colour Black

Weight: 310g