Ergonomic on/off valve make it easy to grip tube and toggle while you're on the move

The GS1 also works perfectly on fitness or sporty urban bikes

2 'Two-Piece' calliper)

the XX Eagle Transmission Cassette and derailleur contact directly

There are also mesh finger gussets featured to enhance mobility and breathability

Box Components Four Prime Wide Rear Derailleur - Rear Derailleur - 8 Speed - Black Dangerous Goods Ergonomic on/off valve make itPrime 9 technology for less derailleur travel and better chainline, less wear, and improved lifespan Box Four features: 8 speed with Prime 9 technology and the same construction as Box Three Speed: 8sp Cage: wide Min Max: 11 42t Weight: 290g Colour: black