Bombtrack Audax

Name: Bombtrack Audax
Brand: Bombtrack

2019 RoadEndurance

Suspension: Rigid
Wheels: 650c
Drivetrain: 2 × 11 32–48t / 11–32t
Gear range: 436%
Weight: 10.4 kg 22.9 lb · Reference configuration not specified
Frame: Steel
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

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

Components

19 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 tubing, tapered head tube, TA dropouts, replaceable hanger, 86 mm T47 shell Not identified

Suspension

1 part

Fork
- Bombtrack

Drivetrain

7 parts

Bottom bracket
- FSA
Cassette
- Shimano 105 CS-R7000 11 speeds 11–32t
CS-R7000
Chain
- KMC X11EL 11 speeds
Crankset
- FSA Gossamer 48/32t
Front derailleur
- Shimano 105 FD-R7000-B 2 speeds
FD-R7000
Rear derailleur
- Shimano Ultegra
RD-RX8000-GS
Shifters
- Shimano 105 ST-R7020
ST-R7020

Brakes

1 part

Brakes
- Shimano 105 BR-R7070
BR-R7070

Wheels and tires

4 parts

Front hub
- Hunt
Rear hub
- Hunt
Rims
- Hunt
Tires
- WTB

Cockpit and contact points

7 parts

Other components

3 parts

Fenders

None
Lights

None
Racks

None

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 389mm

Stack 563mm

Wheelbase 1015mm

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 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	379	389	401	404
Stackmm	535	563	589	613
Top tube lengthmm	527	551	570	585
Seat tube lengthmm	490	520	550	580
Head tube lengthmm	100	130	160	185
Head tube angle	72°	72°	72°	72°
Seat tube angle	74.5°	74°	74°	73.5°
Chainstay lengthmm	420	420	420	420
Wheelbasemm	996	1015	1037	1047
Front centermm	586	604	625	636
Bottom bracket dropmm	68	68	65	66
Standover heightmm	761	781	811	835
Fork rakemm	48	48	48	48
Trailmm	60	60	60	60
Stack/reach ratio	1.41	1.45	1.47	1.52

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: 10.4 kg

22.9 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: 32
Lowest gear: 27.5 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 clearance: Maximum tire width: 47c; Additional specification: Wheel kind: 27.5, Maximum tire width: 35c; Additional specification: Wheel kind: 700
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

27.5 gear inches

This value is below the central range for this class.

Cohort: Road / Endurance Model year: 2019
Sample: 441 bicycles with this information
Coverage: 90.9% of the class

Highest gear

120.0 gear inches

This value is below the central range for this class.

Cohort: Road / Endurance Model year: 2019
Sample: 441 bicycles with this information
Coverage: 90.9% of the class

Shifting

Mechanical

113 of 485 bicycles with this information use electronic shifting.

Cohort: Road / Endurance Model year: 2019
Sample: 485 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.5 km/h
Highest gear: 46.0 km/h

Total gear range 436%

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: 27.5–120.0 gear inches
Class reference (p10–p90): 29.0–133.4 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Endurance Model year: 2019
Lowest gear: 441 bicycles with this information, 90.9% of the class
Highest gear: 441 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 2019 builds

Differences across 2019 builds
Specification	This bicycle Bombtrack Audax	Bombtrack Audax AL
Frame
Frame material	Steel	Aluminum
Bicycle weight	10.4 kg	10.3 kg
Drivetrain
Smallest chainring	32	34
Largest chainring	48	50
Rear sprockets	11	10
Lowest gear	27.5 in	29.2 in
Highest gear	120.0 in	125.0 in
Brakes
Brake type	Hydraulic disc	Mechanical disc
Other specifications
Bottom bracket standard	T47	BB86/BB92
Tire clearance	Maximum tire width: 47c; Additional specification: Wheel kind: 27.5, Maximum tire width: 35c; Additional specification: Wheel kind: 700	Maximum tire width: 50c; Additional specification: Wheel kind: 27.5, Maximum tire width: 35c; Additional specification: Wheel kind: 700