Shimano GRX 1x Rear Derailleur (RD-RX812) BX PSI The GX Eagle™ derailleur gets

The GX Eagle™ derailleur gets it done with an updated cage architecture that improves chain management

over long distances

When developing the Terreno Wet tread

Campagnolo and SRAM)

Shimano GRX 1x Rear Derailleur (RD-RX812) BX PSI The GX Eagle™ derailleur getsWith 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 and ON OFF switch for the chain tensioner. The RD RX812 rear derailleur is compatible with mtb cassettes with a 42T low sprocket max. Features SHIMANO SHADOW RD+ (11 speed) Adjustable chain stabilizer prevents chain slapping and drops Toggle