Shimano GRX RD-RX717-SGS Di2 Wireless Rear Derailleur - 12-Speed Long Cage Shadow ES BLK CheckoutTitle=Abus StormChaser Helmet - Shiny White The high optical quality and

The high optical quality and 100% UV protection keep your eyes safe from the elements

Front: Compatible with QR skewer or 12 mm x 100 mm thru axle (Road bike disc)

Model TOPO Gel Rails FeC Alloy Top Fibra-tek Color Blue/Black LxW (mm) 262x150 Weight 330g

75 Tire Diameter/ISO 27

offering precision and durability

Shimano GRX RD-RX717-SGS Di2 Wireless Rear Derailleur - 12-Speed Long Cage Shadow ES BLK CheckoutTitle=Abus StormChaser Helmet - Shiny White The high optical quality andThe 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