Bombtrack Audax EVO

2025 RoadEndurance Manufacturer page

Bombtrack Audax EVO, color Matt Metallic Steel Teal

Suspension: Rigid
Wheels: 650c
Drivetrain: 2 × 12 46t / 11–36t
Gear range: 327%
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

20 of 21 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

4130 double butted crmo, TA, rack / fender mounts, internal light cable routing, rear light mount, 86.5 mm T47 BB shell Not identified

Suspension

1 part

Fork
- Seido

Drivetrain

7 parts

Bottom bracket
- Seido
Cassette
- Shimano CS-HG710-12 12 speeds 11–36t
CS-HG710-12
Chain
- KMC Z8.1 EPT 8 speeds
Crankset
- Shimano GRX FC-RX810-2 11 speeds
FC-RX810
Front derailleur
- Shimano GRX FD-RX820 2 speeds
FD-RX820
Rear derailleur
- Shimano GRX RD-RX820 12 speeds
RD-RX820
Shifters
- Shimano GRX ST-RX610
ST-RX610

Brakes

2 parts

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 383mm

Stack 571mm

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	383	396	408
Stackmm	534	553	571	590	609
Top tube lengthmm	509	526	547	565	588
Seat tube lengthmm	470	490	520	550	580
Head tube lengthmm	110	130	150	170	190
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	794	818	841
Fork rakemm	53	53	53	53	53
Trailmm	59	59	56	56	56
Stack/reach ratio	1.48	1.48	1.49	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
Weight limit: 120 kg

264.6 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 46
Largest chainring: 46
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 35.1 in
Highest gear: 115.0 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: 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

35.1 gear inches

This value is above the central range for this class.

Cohort: Road / Endurance Model year: 2025
Sample: 546 bicycles with this information
Coverage: 81.8% of the class

Highest gear

115.0 gear inches

This value is below the central range for this class.

Cohort: Road / Endurance Model year: 2025
Sample: 546 bicycles with this information
Coverage: 81.8% of the class

Shifting

Mechanical

356 of 663 bicycles with this information use electronic shifting.

Cohort: Road / Endurance Model year: 2025
Sample: 663 bicycles with this information
Coverage: 99.4% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 13.5 km/h
Highest gear: 44.0 km/h

Total gear range 327%

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: 35.1–115.0 gear inches
Class reference (p10–p90): 26.6–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Endurance Model year: 2025
Lowest gear: 546 bicycles with this information, 81.8% of the class
Highest gear: 546 bicycles with this information, 81.8% 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 2025 builds

Differences across 2025 builds
Specification	This bicycle Bombtrack Audax EVO	Bombtrack Audax	Bombtrack Audax AL Road	Bombtrack Audax AL Sword	Bombtrack Audax AL XCD
Frame
Frame material	Steel	Steel	Aluminum	Aluminum	Aluminum
Bicycle weight	Not informed	10.8 kg	10.3 kg	Not informed	10.4 kg
Frame weight	Not informed	Not informed	Not informed	1.81 kg	Not informed
Drivetrain
Front chainrings	2	2	2	1	1
Smallest chainring	46	32	50	40	40
Largest chainring	46	48	50	40	40
Rear sprockets	12	11	10	10	11
Largest sprocket	36	34	34	48	46
Lowest gear	35.1 in	25.9 in	42.7 in	22.9 in	23.9 in
Highest gear	115.0 in	120.0 in	131.8 in	100.0 in	100.0 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Mechanical disc	Mechanical disc	Mechanical disc
Other specifications
Tire width	47c	47c	34c	47c	47c
Wheel size	650c	650c	700c	650c	650c