BMC BMC 257 Urbanchallenge AL FOUR - 2022

With its clean looks, exacting attention to detail and functional integration, the 257 AL FOUR is the partner in crime for your daily rides. Its Premium Aluminum frame is light, versatile and powder coated for durability. A powerful kickstand, premium fenders and the intuitive Shimano Deore 1x11 single chainring groupset gives you that joyful elegant feeling of velocity and safety.


Frameset
Frame:
257 Premium Aluminum | Smoothwelded | Staggered Top Tube | Powder Coat Finish | Internal Cable Routing | Flat Mount Disc | 12 x 142mm Thru-Axle

Fork:
257 Premium Aluminum | Fender Mounts | Flat Mount Disc | 12 x 100mm Thru-Axle

Cockpit
Stem:
BMC RSM 01

Handlebar:
BMC LSB 03

Seat
Seatpost:
BMC LSP 02

Saddle:
Selle Royal Vivo

Drivetrain
Crankset:
FSA Vero Pro

Chainrings:
SHIMANO HG601rings

Cassette:
SHIMANO Deore (CS-M5100)

Cassette Size:
11-42T

Chain:
SHIMANO HG601

Rear Derailleur:
SHIMANO Deore (RD-M5120)

Shifters:
SHIMANO Deore (SL-M5100) | Rapidfire Plus

Gears:
1 x 11

Bottom Bracket:
BSA Threaded Bottom Bracket

Brakes
Brake Levers / Calipers:
SHIMANO MT200 Levers | BR-U300 Calipers

Rotors:
SHIMANO RT10 Rotors

Rotor Size (F/R):
180 / 180mm

Wheels

Rims:
PFR300

Hubs (F/R):
CL-712 | RXC-142S

Tires:
Pirelli Angel GT | 37mm

Additional Information
Tire ClEarance:
42mm