Centurion Backfire R2700i/R2600i

2022 MountainCross-country Electric bicycle Manufacturer page

Fork travel: 110 mm
Wheels: 29″
Drivetrain: 1 × 11 34t / 11–50t
Gear range: 455%
Battery: 625 Wh
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

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

Components

24 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

Backfire R intube II, Material: Aluminium, 29", Steuerrohr: 1.8" tapered, Ausfallende: 12x148 mm, Bremsaufnahme: Postmount 180 mm, UDH Schaltauge, Rahmenkennung: TBP058A Not identified

Electric system

3 parts

Suspension

1 part

Fork
- Fox

Drivetrain

6 parts

Cassette
- Shimano CS-LG600-11 11–50t
CS-LG600-11
Chain
- Shimano CN-LG500
CN-LG500
Chain guide
- Centurion
Crankset
- Centurion
CK-790
Rear derailleur
- Shimano Deore XT RD-M8130 11 speeds
RD-M8130RD-M8130-11
Shifters
- Shimano Deore XT SL-M8130-IR11 11 speeds
SL-M8130-IR11

Brakes

2 parts

Wheels and tires

5 parts

Cockpit and contact points

5 parts

Other components

2 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 445mm

Stack 656mm

Wheelbase 1191mm

Head angle 68.0°

Seat angle 74.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ 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	425	445	470	495
Stackmm	637	656	674	693
Top tube lengthmm	589	614	640	665
Seat tube lengthmm	400	450	500	550
Head tube lengthmm	105	125	145	165
Head tube angle	68°	68°	68°	68°
Seat tube angle	74°	74°	74°	74°
Chainstay lengthmm	460	460	460	460
Wheelbasemm	1164	1191	1223	1257
Front centermm	712	739	771	805
Bottom bracket dropmm	67.5	67.5	67.5	67.5
Bottom bracket heightmm	307	307	307	307
Standover heightmm	750	781	814	856
Fork rakemm	50	49	49	50
Trailmm	97	98	98	97
Stack/reach ratio	1.50	1.47	1.43	1.40

Not published by the manufacturer: 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
Weight limit: 150 kg

330.7 lb

Suspension

Suspension configuration: Hardtail
Front travel: 110 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 34
Largest chainring: 34
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 50
Lowest gear: 19.7 in
Highest gear: 89.6 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Dropper seatpost
Shifting: Mechanical

Electric system

Battery capacity: 625 Wh

Additional specifications

Battery: Bosch PowerTube 625 Wh (S), 750Wh (M, L, XL)
Fork spring: Air
Tire width: 2.4″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

4 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

110 mm

This value is above the central range for this class.

Cohort: Mountain / Cross-country Model year: 2022
Sample: 1,585 bicycles with this information
Coverage: 93.1% of the class

Lowest gear

19.7 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2022
Sample: 1,333 bicycles with this information
Coverage: 78.3% of the class

Highest gear

89.6 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2022
Sample: 1,333 bicycles with this information
Coverage: 78.3% of the class

Shifting

Mechanical

127 of 1,692 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2022
Sample: 1,692 bicycles with this information
Coverage: 99.4% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.6 km/h
Highest gear: 34.3 km/h

Total gear range 455%

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: 19.7–89.6 gear inches
Class reference (p10–p90): 17.7–100.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2022
Lowest gear: 1333 bicycles with this information, 78.3% of the class
Highest gear: 1333 bicycles with this information, 78.3% of the class

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 2022 builds

Differences across 2022 builds
Specification	This bicycle Centurion Backfire R2700i/R2600i	Centurion Backfire E R750i	Centurion Backfire E R760i	Centurion Backfire E R860i	Centurion Backfire E R860i EQ	Centurion Backfire Fit E R750i
Frame
Bicycle weight	Not informed	21.7 kg	22.3 kg	22.5 kg	24 kg	21.6 kg
Suspension
Front travel	110 mm	100 mm	100 mm	100 mm	100 mm	100 mm
Drivetrain
Smallest chainring	34	34	34	34	34	36
Largest chainring	34	34	34	34	34	36
Rear sprockets	11	10	10	12	12	10
Largest sprocket	50	42	42	50	50	42
Lowest gear	19.7 in	23.5 in	23.5 in	19.7 in	19.7 in	24.9 in
Highest gear	89.6 in	89.6 in	89.6 in	89.6 in	89.6 in	94.9 in
Cockpit
Derailleur hanger	UDH	Not informed	Not informed	Not informed	Not informed	Not informed
Seatpost	Dropper seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost
Electric bicycle systems
Battery capacity	625 Wh	500 Wh	625 Wh	625 Wh	625 Wh	500 Wh
Other specifications
Tire width	2.4″	2.4″	2.4″	2.4″	2.4″	2.25″
Wheel size	29″	29″	29″	29″	29″	27.5″ / 29″