Centurion E-Fire City R750i

2023 UrbanCommuter Electric bicycle Manufacturer page

Fork travel: 63 mm
Wheels: 650b, 700c
Drivetrain: 1 × 9 40t / 11–36t
Gear range: 327%
Battery: 500 Wh
Weight: 27 kg 59.5 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 151–164
SM 159–170
MD 165–177
LG 171–184

Components

28 of 29 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

E-Fire City R G3 intube, Material: Aluminium, Steuerrohr: 1.5" straight, Ausfallende: 10x135 mm, Bremsaufnahme: Postmount 180 mm, Rahmenkennung: 27.5": CBP041B, 28": ABP077B Not identified

Electric system

4 parts

Suspension

1 part

Fork
- SR Suntour

Drivetrain

6 parts

Cassette
- Shimano CS-HG200-9 9 speeds 11–36t
CS-HG200
Chain
- KMC
Chain guide
- Curana
Crankset
- Centurion
Rear derailleur
- Shimano Alivio RD-M3100-SGS 9 speeds
RD-M3100-SGS
Shifters
- Shimano Alivio SL-M3100-R 9 speeds
SL-M3100

Brakes

2 parts

Wheels and tires

5 parts

Front hub
- Procraft
FH-TX506
Rear hub
- Shimano FH-TX506 11 speeds
FH-TX506
Rims
- Procraft
Spokes
- Procraft
Tires
- Schwalbe

Cockpit and contact points

5 parts

Other components

5 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM

Table

Geometry diagram unavailable

The drawing needs reach, which the manufacturer did not publish. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Stackmm	633	659	668	687
Top tube lengthmm	568	593	619	645
Seat tube lengthmm	380	430	480	530
Head tube lengthmm	180	170	180	200
Head tube angle	68.5°	69.5°	69.5°	69.5°
Seat tube angle	73°	73°	73°	73°
Chainstay lengthmm	460	475	475	475
Wheelbasemm	1108	1129	1156	1183
Front centermm	652	662	689	715
Bottom bracket dropmm	46	65	65	65
Standover heightmm	421	451	425	427

Not published by the manufacturer: Reach, Bottom bracket height, Fork rake, Trail, Stack/reach ratio, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 27 kg

59.5 lb
Weight limit: 150 kg

330.7 lb

Suspension

Suspension configuration: Hardtail
Front travel: 63 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 32.2 in
Highest gear: 105.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Electric system

Battery capacity: 500 Wh

Additional specifications

Battery: Bosch PowerTube 500 Wh
Fork spring: Coil
Tire width: 2″
Wheel material: Aluminum
Wheel size: 650b, 700c

Gearing

Estimated speeds at 80 rpm

Lowest gear: 12.3 km/h
Highest gear: 40.4 km/h

Total gear range 327%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 32.2–105.5 gear inches

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 2023 builds
Specification	This bicycle Centurion E-Fire City R750i	Centurion E-Fire City R2600i/R2500i	Centurion E-Fire City R2600i/R2500i SMC	Centurion E-Fire City R550	Centurion E-Fire City R650	Centurion E-Fire City R650 Coaster
Frame
Bicycle weight	27 kg	25 kg	25 kg	Not informed	Not informed	Not informed
Frame weight	Not informed	Not informed	Not informed	0.03 kg	0.02 kg	0.03 kg
Drivetrain
Rear sprockets	9	11	11	9	Not informed	Not informed
Smallest sprocket	11	11	11	11	Not informed	Not informed
Largest sprocket	36	42	42	36	Not informed	Not informed
Lowest gear	32.2 in	27.6 in	27.6 in	32.2 in	Not informed	Not informed
Highest gear	105.5 in	105.5 in	105.5 in	105.5 in	Not informed	Not informed
Drivetrain technologies	Not informed	Not informed	Not informed	Not informed	internally-geared-hub	internally-geared-hub
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Coaster brake
Other specifications
Battery	Capacity: 500 WhBosch PowerTube 500 Wh	Capacity: 500 WhBosch PowerTube 500 Wh (XS), 625 Wh (S, M, L)	Capacity: 500 WhBosch PowerTube 500 Wh (XS), 625 Wh (S, M, L)	Capacity: 500 WhBosch PowerPack 500 Wh	Capacity: 500 WhBosch PowerPack 500 Wh	Capacity: 500 WhBosch PowerPack 500 Wh
Fork spring	Coil	Air	Air	Coil	Coil	Coil
Wheel size	650b / 700c	650b / 700c	650b / 700c	26″ / 700c	26″ / 700c	26″ / 700c