Bombtrack Tension Apex

2025 RoadCyclocross Manufacturer page

Suspension: Rigid
Wheels: 650b, 700c
Drivetrain: 1 × 12 40t / 11–44t
Gear range: 400%
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

18 of 20 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 T47 BB 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
- Seido
Cassette
- SRAM 11–44t
Chain
- SRAM Apex
Crankset
- SRAM Apex
Front derailleur

None
Rear derailleur
- SRAM Apex XPLR 12 speeds
Shifters
- SRAM Apex

Brakes

2 parts

Wheels and tires

4 parts

Cockpit and contact points

7 parts

Grips
- Bombtrack
Handlebar
- Seido
CX-10
Headset
- Seido
Pedals

None
Saddle
- Seido
Seatpost
- Seido
Stem
- Seido

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
Frame weight: 1.58 kg

3.5 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: 12
Smallest sprocket: 11
Largest sprocket: 44
Lowest gear: 26.4 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 clearance: Maximum tire width: 37c; Additional specification: Wheel kind: 27.5, Maximum tire width: 37c; Additional specification: Wheel kind: 700
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

26.4 gear inches

This value is within the central range for this class.

Cohort: Road / Cyclocross Model year: 2025
Sample: 80 bicycles with this information
Coverage: 90.9% of the class

Highest gear

105.5 gear inches

This value is within the central range for this class.

Cohort: Road / Cyclocross Model year: 2025
Sample: 80 bicycles with this information
Coverage: 90.9% of the class

Shifting

Mechanical

27 of 88 bicycles with this information use electronic shifting.

Cohort: Road / Cyclocross Model year: 2025
Sample: 88 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.1 km/h
Highest gear: 40.4 km/h

Total gear range 400%

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: 26.4–105.5 gear inches
Class reference (p10–p90): 23.6–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Cyclocross Model year: 2025
Lowest gear: 80 bicycles with this information, 90.9% of the class
Highest gear: 80 bicycles with this information, 90.9% 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 2025 builds

Differences across 2025 builds
Specification	This bicycle Bombtrack Tension Apex	Bombtrack Tension C	Bombtrack Tension C Rival AXS	Bombtrack Tension Rival
Frame
Frame material	Aluminum	Carbon	Carbon	Aluminum
Frame weight	1.58 kg	Not informed	1.06 kg	Not informed
Weight limit	120 kg	115 kg	115 kg	120 kg
Bicycle weight	Not informed	8.5 kg	Not informed	9.4 kg
Drivetrain
Rear sprockets	12	11	12	11
Smallest sprocket	11	11	10	11
Largest sprocket	44	36	36	42
Lowest gear	26.4 in	32.2 in	32.2 in	27.6 in
Highest gear	105.5 in	105.5 in	116.0 in	105.5 in
Cockpit
Shifting	Mechanical	Mechanical	Electronic	Mechanical
Other specifications
Tire clearance	Maximum tire width: 37c; Additional specification: Wheel kind: 27.5, Maximum tire width: 37c; Additional specification: Wheel kind: 700	Maximum tire width: 37c; Additional specification: Wheel kind: 700	Maximum tire width: 37c; Additional specification: Wheel kind: 700	Maximum tire width: 37c; Additional specification: Wheel kind: 27.5, Maximum tire width: 37c; Additional specification: Wheel kind: 700
Tire width	33c	33c	33c	32c
Wheel size	650b / 700c	700c	700c	650b / 700c