The 257 AL ONE ST is your all-new urban bike of choice. With its clean looks, exacting attention to detail and functional integration, this is your partner in crime for daily rides. Its Premium Aluminium frame is light, versatile and powder coated for durability. Integrated StVZO certified lights, premium fenders and the reliable Shimano Alfine 8 groupset with beltdrive gives you that joyful elegant feeling of velocity and safety.
Technology
Swiss Design
Durable
Safe
Functional
Technical Overview
Frameset
Frame:
257 Premium Aluminium | Smoothwelded | Staggered Top Tube | Powder Coat Finish | Internal Cable Routing | Flat Mount Disc | 12 x 142mm Thru-Axle
Fork:
257 Premium Aluminium | Fender Mounts | Flat Mount Disc | 12 x 100mm Thru-Axle
Cockpit
Stem:
BMC MSM 01
Handlebar:
Lightskin with Integrated Lights
Seat
Seatpost:
Lightskin with Integrated Lights
Saddle:
Selle Royal Vivo Women's
Drivetrain
Crankset:
Gates S550 CDX
Chainrings:
Gates Belt 120 CDXrings
Cassette:
Gates SureFit 3-LOBE Unified CDX2
Cassette Size:
4T
Chain:
Gates Belt 120 CDX
Shifters:
SHIMANO Alfine (SL-S7000) | Rapidfire Plus
Gears:
1 x 8
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:
SR500
Hubs (F/R):
CL-712 | SHIMANO Alfine 8
Tires:
Pirelli Angel GT | 37mm
Additional Information
Tire Clearance:
42mm
ASTM Classification:
Level 2
System Weight Limit:
120kg
| Size | S | M |
|---|---|---|
| Rider Height | <170 | 170-185 |
| Reach | 390 | 420 |
| Stack | 590 | 640 |
| Bar Width | 620 | 620 |
| BB Drop | 67 | 67 |
| Crank Length | 170 | 170 |
| Fork Length | 408 | 408 |
| Fork Rake | 45 | 45 |
| Front Center | 632 | 680 |
| Head Tube | 165 | 219 |
| Head Tube Angle | 70 | 70 |
| Rear Center | 440 | 440 |
| Seat Angle | 74 | 74 |
| Seat Tube | 450 | 500 |
| Seatpost Length | 350 | 350 |
| Seatpost Offset | 10 | 10 |
| Standover Height | 644 | 653 |
| Stem Angle | -5 | -5 |
| Stem Length | 80 | 80 |
| Top Tube | 559 | 603 |
| Trail | 75 | 75 |
| Wheelbase | 1063 | 1111 |
