Bombtrack Tension 1

Name: Bombtrack Tension 1
Brand: Bombtrack

2021 RoadCyclocross Manufacturer page

Suspension: Rigid
Wheels: 650b, 700c
Drivetrain: 1 × 11 40t / 11–42t
Gear range: 382%
Weight: 9.4 kg 20.7 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 156–166
SM 163–174
MD 171–182
LG 179–189
XL 185–195

Components

16 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

6061-T6 double butted aluminium, TA,rack / fender mounts,86.5 mm BB T47 shell Not identified

Suspension

1 part

Fork

Full carbon, TA, 1.1/2" - 1.1/8", fender mounts Not identified

Drivetrain

7 parts

Bottom bracket
- Bombtrack
Cassette
- SRAM PG-1130 11 speeds 11–42t
PG-1130
Chain
- KMC X11 11 speeds
Crankset
- Bombtrack 40t
Front derailleur

None
Rear derailleur
- SRAM Apex 1 11 speeds
Shifters
- SRAM Apex 1 11-Speed Flat Bar 11 speeds

Brakes

1 part

Brakes
- SRAM Apex Disc

Wheels and tires

4 parts

Cockpit and contact points

7 parts

Grips
- Bombtrack
Handlebar
- Bombtrack
CX-10
Headset

Sealed integrated aheadset, 1.1/2" - 1.1/8" Not identified
Pedals

None
Saddle
- Bombtrack
Seatpost
- Bombtrack
Stem
- Bombtrack

Other components

3 parts

Fenders

None
Lights

None
Racks

None

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 380mm

Stack 563mm

Wheelbase 1014mm

Head angle 71.5°

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 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	355	366	380	391	402
Stackmm	514	530	563	587	603
Top tube lengthmm	507	523	552	570	586
Seat tube lengthmm	460	490	530	560	590
Head tube lengthmm	100	115	139	162	179
Head tube angle	71°	71.5°	71.5°	72°	72°
Seat tube angle	73.5°	73.5°	73°	73°	73°
Chainstay lengthmm	410	410	425	425	425
Wheelbasemm	967	979	1014	1028	1044
Front centermm	563	575	598	611	627
Bottom bracket dropmm	55	55	65	65	65
Bottom bracket heightmm	—	—	279	279	279
Standover heightmm	734	757	799	825	848
Fork rakemm	45	45	45	45	45
Trailmm	67	64	70	66	66
Stack/reach ratio	1.45	1.45	1.48	1.50	1.50

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
Fork material: Carbon
Bicycle weight: 9.4 kg

20.7 lb
Weight limit: 120 kg

264.6 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 42
Lowest gear: 27.6 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

Additional specifications

Bottom bracket standard: T47
Tire width: 33c
Wheel material: Aluminum
Wheel size: 650b, 700c

Technical analysis

3 measures

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

Lowest gear

27.6 gear inches

This value is below the central range for this class.

Cohort: Road / Cyclocross Model year: 2021
Sample: 91 bicycles with this information
Coverage: 92.8% of the class

Highest gear

105.5 gear inches

This value is within the central range for this class.

Cohort: Road / Cyclocross Model year: 2021
Sample: 91 bicycles with this information
Coverage: 92.8% of the class

Shifting

Mechanical

16 of 98 bicycles with this information use electronic shifting.

Cohort: Road / Cyclocross Model year: 2021
Sample: 98 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.6 km/h
Highest gear: 40.4 km/h

Total gear range 382%

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: 27.6–105.5 gear inches
Class reference (p10–p90): 27.6–121.3 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Cyclocross Model year: 2021
Lowest gear: 91 bicycles with this information, 92.8% of the class
Highest gear: 91 bicycles with this information, 92.8% 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 2021 builds
Specification	This bicycle Bombtrack Tension 1	Bombtrack Tension 2	Bombtrack Tension C
Frame
Frame material	Aluminum	Aluminum	Carbon
Bicycle weight	9.4 kg	8.9 kg	8.5 kg
Weight limit	120 kg	115 kg	115 kg
Drivetrain
Largest sprocket	42	36	36
Lowest gear	27.6 in	32.2 in	32.2 in
Other specifications
Wheel size	650b / 700c	650b / 700c	700c

Changes since 2020
Specification	2020 Bombtrack Tension 1	This bicycle Bombtrack Tension 1
Frame
Bicycle weight	Not informed	9.4 kg
Weight limit	Not informed	120 kg
Other specifications
Tire clearance	Maximum tire width: 37c; Additional specification: Wheel kind: 700	Not informed
Wheel size	700c	650b / 700c