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Black Shimano GRX RD-RX812 11-speed rear derailleur with Shadow+ technology and sleek, angular design.

Shimano GRX RD-RX812 11 Speed Rear Derailleur

by Shimano

£100.00from 2 retailers

The Shimano GRX RD-RX812 11 Speed Rear Derailleur offers precise shifting and a chain stabilizer for a quieter ride on mixed terrain.

GTIN04550170448882
EAN4550170448882
MPNRDRX812
Prices updated 25 Aug 2026

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Leisure Lakes Bikes

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Product Description

With an integrated chain stabilizer mechanism, the SHIMANO GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON/OFF switch for the chain tensioner. Its compatible with current road dual control lever and gives you precise shifting every time. Shimano Grx RD-RX812 11 Speed Derailleur Features Adjustable chain stabilizer prevents chain slapping & drops Smooth and reliable mixed surface shifting Compatible with current road dual control lever Top sprocket: Max. 11T/Min. 11T Low sprocket: Max. 42T/Min. 40T Total capacity: 31T

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