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Shimano Grx Rx810 Rx812 Groupset 170 172.5 175mm 40 42t Crankset Shifter Derailleur Cassette 1x11s Road Bike Disc Brake Suit - Bicycle Crank & Chainwheel - AliExpress
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Shimano Grx 11speed Rear Derailleur Rd-rx812 42t Max Low Sprocket Original Parts - Bicycle Derailleur - AliExpress
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grx 812 rear derailleur All products are discounted, Cheaper Than Retail Price, Free Delivery & Returns OFF 67%
![Modified Shimano GRX RD-RX812 1x11 spd rear derailleur to supports 2x11 spd w/ 11-46T cassette. - YouTube Modified Shimano GRX RD-RX812 1x11 spd rear derailleur to supports 2x11 spd w/ 11-46T cassette. - YouTube](https://i.ytimg.com/vi/7kUxmkuJWNg/maxresdefault.jpg)