BMC 257 AL AMP ONE

Name: BMC 257 AL AMP ONE
Brand: BMC

2025 UrbanCommuter Electric bicycle Manufacturer page

Image not available

The bicycle record remains available with its published technical data.

Last known price: $4,999

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 1 46t
Battery: 625 Wh
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM Not informed
MD 167–180
LG 178–191
XL 189+

Components

15 of 19 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

257 AMP Premium Aluminium | Smoothwelded | Integrated Battery | Internal Cable Routing | Powder Coat Finish | Flat Mount Disc | Internal Gear Hub dropouts Not identified

Electric system

4 parts

Suspension

1 part

Fork

257 Premium Aluminium | Fender Mounts | Flat Mount Disc | 12 x 100mm Thru-Axle Not identified

Drivetrain

5 parts

Bottom bracket
- Bosch
Cassette
- Gates
Chain
- Gates
Crankset
- Gates
Shifters
- Shimano Alfine SL-S7000 8 speeds
SL-S7000

Brakes

2 parts

Wheels and tires

2 parts

Rims

E-SRX30 Not identified

E-SRX30
Tires
- Pirelli

Cockpit and contact points

4 parts

Handlebar
- BMC
Saddle
- Selle Royal Vivo
Seatpost
- BMC
Stem

ICS MTT x Redshift Suspension Stem | Integrated Cockpit System Technology Not identified

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 424mm

Stack 590mm

Wheelbase 1084mm

Head angle 70.0°

Seat angle 75.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	424	424	425	436
Stackmm	560	590	620	645
Top tube lengthmm	574	582	591	609
Seat tube lengthmm	480	510	540	570
Head tube lengthmm	133	165	197	225
Head tube angle	70°	70°	70°	70°
Seat tube angle	75°	75°	75°	75°
Chainstay lengthmm	428	428	428	428
Wheelbasemm	1073	1084	1096	1117
Front centermm	665	665	677	699
Bottom bracket dropmm	67	67	67	67
Standover heightmm	766	794	819	847
Fork rakemm	45	45	45	45
Trailmm	75	75	75	75
Stack/reach ratio	1.32	1.39	1.46	1.48
Suspension and parts
Crank lengthmm	170	170	170	170
Handlebar widthmm	680	680	680	680
Stem lengthmm	72	72	80	90
Seatpost lengthmm	350	350	350	350

Not published by the manufacturer: Bottom bracket height, Front travel, Rear travel, Stem angle and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Aluminum
Weight limit: 120 kg

264.6 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 46
Largest chainring: 46
Rear sprockets: 1
Drivetrain technologies: belt-drive, internally-geared-hub

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Electric system

Battery capacity: 625 Wh

Additional specifications

Battery: Bosch PowerTube | 625 Wh | Certified by Intertek Testing Services NA, Inc.
Bottom bracket standard: Bosch
Tire clearance: Maximum tire width: 42c
Tire width: 37c
Wheel material: Aluminum
Wheel size: 700c

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds

Differences across 2025 builds
Specification	This bicycle BMC 257 AL AMP ONE	BMC 257 AL AMP ONE ST	BMC 257 AL AMP Three	BMC 257 AL AMP Three ST	BMC 257 AL AMP TWO	BMC 257 AL AMP TWO ST
Frame
Intended fit	Unisex	womens	Unisex	womens	Unisex	womens
Drivetrain
Smallest chainring	46	46	38	38	38	38
Largest chainring	46	46	38	38	38	38
Rear sprockets	1	1	10	10	12	12
Drivetrain technologies	belt-drive, internally-geared-hub	belt-drive, internally-geared-hub	Not informed	Not informed	Not informed	Not informed