The Arrival Frame is UDH and MX compatible. Included is a SRAM Universal Derailleur Hanger with every frame, giving you the option to run a non-UDH derailleur. This frame is painted in a matte raw finish with Cobalt logo. The Arrival platform is a carbon, all-mountain slash enduro machine that rewards riders who appreciate long challenging days in the saddle and demand a capable bike on the descents. This versatile bike is ready for anything you can throw at it, and is right at home under the control of aggressive riders who are able to push their bike to the limit. The Arrival needs to be challenged to be understood and appreciated. Whether you're tackling big days out in the mountains or railing through tight, technical singletrack at your local hill, the Arrival will handle it all... if you can. All Frames include: SRAM Universal Derailleur Hanger Seat Collar 180mm Rear Brake Mount Super Boost Rear Axle Shock not included - Choose your preferred Rear Shock in 185x55 SPECS: Rear Wheel Travel = 152mm Wheel Size = 29" Front, 29" or 27.5" Rear with Flip-Chip Designed around 160mm fork. Also approved for 170mm fork. Optimized for 44mm fork offset. Rear Shock Size = 185x55 | Compatible with air or coil shocks. Shock Hardware Size = m8x30 Headset Spec = ZS44/ZS56 Seatpost Diameter = 31.6mm Chainline = 55mm Using a 148mm Boost crankset creates a 168mm Q-factor.