Giant Roam 4 - Stealth Chrome Apollo the derailleur cage actually rotates

the derailleur cage actually rotates to maintain a consistent angular relationship with the chain

Rear Axle: 142x12 Thru Axle

Hydrolix™

Eye garage

Giant Roam 4 - Stealth Chrome Apollo the derailleur cage actually rotatesWith its flat handlebar, comfortable upright positioning and smooth, powerful disc brakes, Roam combines the best qualities of a road bike and a mountain bike. Now you can follow your own route wherever it goes. Key Performance Factors Agility and control Updated flat bar frame geometry puts the rider in a position that balances efficiency with stability, and disc brakes give you added control on rugged roads or dirt. Smooth riding comfort The D Fuse