With its clean looks, exacting attention to detail and functional integration, the 257 AMP AL TWO ST is your partner in crime to boost your daily rides. Its Premium Aluminium frame is light, versatile and powder coated for durability. The naturally engaging and powerful BOSCH Performance CX motor combined with the comfort enhancing ICS MTT Stem and premium lights give you that joyful elegant feeling of velocity and safety.
Technology
Powerful Companion
Swiss Design
Durable
Safe
Technical Overview
Frameset
Frame:
257 AMP Premium Aluminium | Smoothwelded | Staggered Top Tube | Integrated Battery | Internal Cable Routing | Powder Coat Finish | Post Mount Disc | 12 x 142mm Thru-Axle
Fork:
257 Premium Aluminium | Fender Mounts | Flat Mount Disc | 12 x 100mm Thru-Axle
E-System
Drive Unit:
Bosch Performance Line CX
Battery Pack:
Bosch PowerTube | 625 Wh
Display:
Bosch Kiox
Drive Unit Control:
Bosch Kiox
Charger:
Bosch Compact Charger
Cockpit
Stem:
ICS MTT x Redshift Suspension Stem | Integrated Cockpit System Technology
Handlebar:
BMC LSB 01
Seat
Seatpost:
BMC LSP 02
Saddle:
Selle Royal Vivo Women's
Drivetrain
Crankset:
Miranda Classic x Bosch
Chainrings:
Cassette:
SHIMANO Deore
Cassette Size:
10-51T
Chain:
KMC e12 EPT - Designed for Bosch
Rear Derailleur:
SHIMANO Deore (RD-M6100)
Shifters:
SHIMANO Deore (SL-M6100) | Rapidfire Plus
Gears:
1 x 12
Brakes
Brake Levers / Calipers:
TEKTRO HD-EU818 / 817
Rotors:
TEKTRO RS02M
Rotor Size (F/R):
180 / 160mm
Wheels
Rims:
SR500
Hubs (F/R):
RX-812 | MSL-142S
Tires:
Pirelli Angel GT | 37mm
Additional Information
Tire Clearance:
42mm
Weight without Pedals:
21.9 Kg
ASTM Classification:
Level 2
System Weight Limit:
120kg
General Product Safety Regulation (GPSR):
Safety Instructions GPSR (EU)
Responsible person according to GPSR (EU)
| Size | S | M |
|---|---|---|
| Rider Height | 160-172 | 170-184 |
| Reach | 424 | 420 |
| Stack | 590 | 640 |
| Bar Width | 680 | 680 |
| BB Drop | 67 | 67 |
| Crank Length | 170 | 170 |
| Fork Length | 408 | 408 |
| Fork Rake | 45 | 45 |
| Front Center | 665 | 679 |
| Head Tube | 165 | 217 |
| Head Tube Angle | 70 | 70 |
| Rear Center | 440 | 440 |
| Seat Angle | 75 | 75 |
| Seat Tube | 450 | 450 |
| Seatpost Length | 350 | 350 |
| Seatpost Offset | 15 | 15 |
| Standover Height | 649 | 672 |
| Stem Length | 70 | 70 |
| Top Tube | 582 | 591 |
| Trail | 75 | 75 |
| Wheelbase | 1096 | 1110 |
