Shimano GRX RD-RX717-SGS Di2 Wireless Rear Derailleur - 12-Speed Long Cage Shadow ES BLK CheckoutSpec= 27.2 x 400mm even against corrosion

even against corrosion

RT3 shocks feature external rebound and 3-Position compression adjustment (Open/Pedal/Lock) Solo Air lets you add air to your shock through a single Schrader valve filling both the positive and negative air spring chambers simultaneously

Check the EXP Framepack Sizing Chart for fit information

ISO Diameter 406 / 20" BMX ISO Width (mm) 61 ISO Width (mm) 62 ISO Width (mm) 63 ISO Width (mm) 64 ISO Width (mm) 65 ISO Width (mm) 66 ISO Width (mm) 67 ISO Width (mm) 68 ISO Width (mm) 69 ISO Width (mm) 70 ISO Width (mm) 71 Labeled Size 20 x 2

Shimano GRX RD-RX717-SGS Di2 Wireless Rear Derailleur - 12-Speed Long Cage Shadow ES BLK CheckoutSpec= 27.2 x 400mm even against corrosionThe Shimano GRX RX717 Di2 Wireless rear derailleur paired with a 10 51t cassette (cassette sold separate) gives gravel riders the speed range and robustness to pursue any gravel challenge. With built in automatic impact recovery an impact deflecting shape and solid pulleys this derailleur stands up to hard impacts and still retains its lightning quick shifting performance. Fully wireless shifting built for rough gravel terrain A wide link structure