Centurion E-Fire Sport R860i / 850i

2020 UrbanCommuter Electric bicycle Manufacturer page

Wheels: 700c
Drivetrain: 1 × 10 42t / 11–36t
Gear range: 327%
Battery: 625 Wh
Weight: 25.2 kg 55.6 lb · Reference configuration not specified
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–171
MD 168–180
LG 178–189
XL 186–199

Components

23 of 25 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 Sport R G3 intube Not identified

Electric system

2 parts

Suspension

1 part

Fork
- SR Suntour NEX
NEX-E25

Drivetrain

6 parts

Cassette
- Shimano CS-HG50-10 10 speeds 11–36t
CS-HG50-10
Chain
- KMC
Chain guide
- Curana
Crankset
- Centurion
Rear derailleur
- Shimano Deore RD-M6000-SGS 10 speeds
RD-M6000-SGS
Shifters
- Shimano Deore SL-M6000-R 10 speeds
SL-M6000

Brakes

2 parts

Brake levers
- Shimano BL-MT200
BL-MT200
Brakes
- Shimano BR-MT200
BR-MT200

Wheels and tires

5 parts

Front hub
- Shimano HB-M4050
HB-M4050FH-M4050
Rear hub
- Shimano FH-M4050
FH-M4050HB-M4050
Rims
- Procraft
Spokes

Stainless 2.0 Not identified
Tires
- Schwalbe

Cockpit and contact points

5 parts

Other components

3 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 399mm

Stack 643mm

Wheelbase 1124mm

Head angle 70.0°

Seat angle 73.0°

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
Reachmm	387	399	411	423
Stackmm	624	643	661	680
Top tube lengthmm	578	595	613	631
Seat tube lengthmm	430	480	530	580
Head tube lengthmm	130	150	170	190
Head tube angle	70°	70°	70°	70°
Seat tube angle	73°	73°	73°	73°
Chainstay lengthmm	475	475	475	475
Wheelbasemm	1106	1124	1143	1162
Front centermm	639	657	676	695
Bottom bracket dropmm	65	65	65	65
Standover heightmm	768	800	835	871
Fork rakemm	42	41	42	42
Trailmm	82	83	82	82
Stack/reach ratio	1.61	1.61	1.61	1.61

Not published by the manufacturer: Bottom bracket height, 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
Bicycle weight: 25.2 kg

55.6 lb
Weight limit: 150 kg

330.7 lb

Suspension

Suspension configuration: Hardtail

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 42
Largest chainring: 42
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 33.8 in
Highest gear: 110.7 in

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 625Wh / 500Wh
Fork spring: Coil
Tire width: 50c
Travel: Front: Additional specification: Not available: No
Wheel material: Aluminum
Wheel size: 700c

Gearing

Estimated speeds at 80 rpm

Lowest gear: 13.0 km/h
Highest gear: 42.4 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: 33.8–110.7 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 2020 builds

Differences across 2020 builds
Specification	This bicycle Centurion E-Fire Sport R860i / 850i	Centurion E-Fire City F750	Centurion E-Fire City F950	Centurion E-Fire City R2600i / 2500i	Centurion E-Fire City R2600i / 2500i ABS	Centurion E-Fire City R550
Frame
Bicycle weight	25.2 kg	25.3 kg	25.9 kg	24.4 kg	25.3 kg	23.9 kg
Drivetrain
Smallest chainring	42	38	38	40	40	42
Largest chainring	42	38	38	40	40	42
Rear sprockets	10	9	1	11	11	9
Smallest sprocket	11	11	18	11	11	11
Largest sprocket	36	36	18	42	42	36
Lowest gear	33.8 in	30.6 in	61.2 in	27.6 in	27.6 in	33.8 in
Highest gear	110.7 in	100.2 in	61.2 in	105.5 in	105.5 in	110.7 in
Cockpit
Shifting	Mechanical	Mechanical	No shifting	Mechanical	Mechanical	Mechanical
Electric bicycle systems
Battery capacity	625 Wh	500 Wh	500 Wh	625 Wh	625 Wh	500 Wh
Other specifications
Fork spring	Coil	Coil	Coil	Air	Air	Coil
Tire width	50c	Not informed	Not informed	Not informed	Not informed	Not informed
Wheel size	700c	700c	700c	650b / 700c	650b / 700c	26″ / 700c