Bombtrack Audax AL

Name: Bombtrack Audax AL
Brand: Bombtrack

2020 RoadEndurance Manufacturer page

Suspension: Rigid
Wheels: 650c
Drivetrain: 1 × 11 40t / 11–46t
Gear range: 418%
Frame: Aluminum
Brakes: Mechanical 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 aluminum, tapered head tube, TA dropouts, replaceable hanger, 86.5 mm T47 shell Not identified

Suspension

1 part

Fork

full carbon, TA disc fork, 1.1/2" - 1.1/8" tapered steerer, with fender / cage mounts Not identified

Drivetrain

7 parts

Bottom bracket

T47 sealed BB for 30 mm spindle Not identified
Cassette
- microSHIFT 11–46t
CS-HG113
Chain
- KMC X10 10 speeds
Crankset
- Bombtrack 40t
Front derailleur

None
Rear derailleur
- microSHIFT
RD-M665M
Shifters
- microSHIFT Drop Bar Shifters for Shimano DynaSys 11 11 speeds
SB-M110

Brakes

1 part

Brakes
- TRP Spyre

Wheels and tires

4 parts

Cockpit and contact points

7 parts

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 390mm

Stack 561mm

Wheelbase 1021mm

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	368	379	390	401	411
Stackmm	512	533	561	587	611
Top tube lengthmm	505	527	551	569	592
Seat tube lengthmm	470	500	530	560	590
Head tube lengthmm	100	120	150	180	205
Head tube angle	71°	72°	72°	72°	72°
Seat tube angle	75°	74.5°	74°	74°	73.5°
Chainstay lengthmm	420	420	420	420	420
Wheelbasemm	991	1000	1021	1041	1059
Front centermm	581	590	610	630	647
Bottom bracket dropmm	70	68	68	65	65
Standover heightmm	739	757	784	815	839
Fork rakemm	53	53	53	53	53
Trailmm	60.7	54.4	54.4	54.4	54.4
Stack/reach ratio	1.39	1.41	1.44	1.46	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: Aluminum
Fork material: Carbon

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: 46
Lowest gear: 23.9 in
Highest gear: 100.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: T47
Tire clearance: Maximum tire width: 50c; 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

23.9 gear inches

This value is below the central range for this class.

Cohort: Road / Endurance Model year: 2020
Sample: 524 bicycles with this information
Coverage: 90.0% of the class

Highest gear

100.0 gear inches

This value is below the central range for this class.

Cohort: Road / Endurance Model year: 2020
Sample: 524 bicycles with this information
Coverage: 90.0% of the class

Shifting

Mechanical

143 of 582 bicycles with this information use electronic shifting.

Cohort: Road / Endurance Model year: 2020
Sample: 582 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.2 km/h
Highest gear: 38.3 km/h

Total gear range 418%

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: 23.9–100.0 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: 2020
Lowest gear: 524 bicycles with this information, 90.0% of the class
Highest gear: 524 bicycles with this information, 90.0% 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 2020 builds
Specification	This bicycle Bombtrack Audax AL	Bombtrack Audax
Frame
Frame material	Aluminum	Steel
Drivetrain
Front chainrings	1	2
Smallest chainring	40	32
Largest chainring	40	48
Largest sprocket	46	32
Lowest gear	23.9 in	27.5 in
Highest gear	100.0 in	120.0 in
Brakes
Brake type	Mechanical disc	Hydraulic disc

Changes since 2019
Specification	2019 Bombtrack Audax AL	This bicycle Bombtrack Audax AL
Frame
Bicycle weight	10.3 kg	Not informed
Drivetrain
Front chainrings	2	1
Smallest chainring	34	40
Largest chainring	50	40
Rear sprockets	10	11
Largest sprocket	32	46
Lowest gear	29.2 in	23.9 in
Highest gear	125.0 in	100.0 in
Other specifications
Bottom bracket standard	BB86/BB92	T47