Shimano GRX RD-RX817 Di2 Rear Derailleur WorkMate Serial Numbers The Stan's NoTubes Dart Tool

The Stan's NoTubes Dart Tool Refill Pack is designed to work with the Stan's NoTubes Dart Tool

or secured to a vehicle rack

Whether servicing a road bike

and unmatched mud-shedding capability

Shimano GRX RD-RX817 Di2 Rear Derailleur WorkMate Serial Numbers The Stan's NoTubes Dart ToolThe Shimano GRX RD RX817 Di2 Rear Derailleur is designed specifically for gravel and adventure riding, delivering fast, precise electronic shifting performance across rough and variable terrain. As part of Shimanos GRX 11 speed Di2 ecosystem, it is built to maintain stability and control in demanding off road conditions. The derailleur is compatible with Shimano 11 speed drivetrains and supports cassette ranges up to 1142T, making it suitable for both