Bombtrack Audax

Name: Bombtrack Audax
Brand: Bombtrack

2021 RoadEndurance Manufacturer page

Suspension: Rigid
Wheels: 650c
Drivetrain: 2 × 11 32–48t / 11–34t
Gear range: 464%
Weight: 10.8 kg 23.8 lb · Reference configuration not specified
Frame: Steel
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

17 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

COLUMBUS CROMOR double butted, TA, rack / fender mounts,internal light cable routing, rear light mount, 86.5 mm T47 BB shell Not identified

Suspension

1 part

Fork

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

Drivetrain

7 parts

Bottom bracket
- Bombtrack
Cassette
- Shimano 105 CS-R7000 11 speeds 11–34t
CS-R7000
Chain
- KMC X11 11 speeds
Crankset
- Bombtrack 48/32t
Front derailleur
- Shimano 105 FD-R7000 2 speeds
FD-R7000
Rear derailleur
- Shimano Ultegra
RD-RX800-GS
Shifters
- Shimano 105 ST-R7020
ST-R7020

Brakes

1 part

Brakes
- Shimano 105 BR-R7070
BR-R7070

Wheels and tires

4 parts

Cockpit and contact points

7 parts

Grips
- Bombtrack
Handlebar
- Ritchey Comp Streem
Headset

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

None
Saddle
- Bombtrack
Seatpost
- Ritchey Comp
Stem
- Ritchey Comp 4 Axis

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 384mm

Stack 574mm

Wheelbase 1018mm

Head angle 72.0°

Seat angle 74.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 650c 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	361	373	384	396	408
Stackmm	534	553	574	590	609
Top tube lengthmm	504	519	544	566	593
Seat tube lengthmm	470	490	520	550	580
Head tube lengthmm	105	125	145	170	195
Head tube angle	71.5°	71.5°	72°	72°	72°
Seat tube angle	74.5°	74.5°	74°	74°	73.5°
Chainstay lengthmm	420	420	420	420	420
Wheelbasemm	987	1005	1018	1037	1055
Front centermm	577	595	607	626	643
Bottom bracket dropmm	68	68	68	65	65
Standover heightmm	746	765	793	818	841
Fork rakemm	53	53	53	53	53
Trailmm	59	59	56	56	56
Stack/reach ratio	1.48	1.48	1.50	1.49	1.49

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
Frame material: Steel
Fork material: Carbon
Bicycle weight: 10.8 kg

23.8 lb
Weight limit: 120 kg

264.6 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 32
Largest chainring: 48
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 25.9 in
Highest gear: 120.0 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: 47c
Wheel material: Aluminum
Wheel size: 650c

Technical analysis

3 measures

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

Lowest gear

25.9 gear inches

This value is below the central range for this class.

Cohort: Road / Endurance Model year: 2021
Sample: 465 bicycles with this information
Coverage: 90.4% of the class

Highest gear

120.0 gear inches

This value is below the central range for this class.

Cohort: Road / Endurance Model year: 2021
Sample: 465 bicycles with this information
Coverage: 90.4% of the class

Shifting

Mechanical

130 of 513 bicycles with this information use electronic shifting.

Cohort: Road / Endurance Model year: 2021
Sample: 513 bicycles with this information
Coverage: 99.8% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.9 km/h
Highest gear: 46.0 km/h

Total gear range 464%

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: 25.9–120.0 gear inches
Class reference (p10–p90): 29.0–137.1 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Endurance Model year: 2021
Lowest gear: 465 bicycles with this information, 90.4% of the class
Highest gear: 465 bicycles with this information, 90.4% 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 Audax	Bombtrack Audax AL
Frame
Frame material	Steel	Aluminum
Bicycle weight	10.8 kg	10.4 kg
Drivetrain
Front chainrings	2	1
Smallest chainring	32	40
Largest chainring	48	40
Largest sprocket	34	46
Lowest gear	25.9 in	23.9 in
Highest gear	120.0 in	100.0 in
Brakes
Brake type	Hydraulic disc	Mechanical disc

Changes since 2020
Specification	2020 Bombtrack Audax	This bicycle Bombtrack Audax
Frame
Bicycle weight	Not informed	10.8 kg
Weight limit	Not informed	120 kg
Drivetrain
Largest sprocket	32	34
Lowest gear	27.5 in	25.9 in
Other specifications
Tire clearance	Maximum tire width: 50c; Additional specification: Wheel kind: 27.5, Maximum tire width: 35c; Additional specification: Wheel kind: 700	Not informed