
Bombtrack Audax Evo Grx610

Bombtrack Audax Evo Grx610
gravel bike, steel frame, 650b / 27.5" wheels, 2×12 drivetrain, mid-range equipment
Key specs
- Model year
- 2025
- Weight
- 10.5 kg
- Frame
- Steel
- Wheelset
- 650b / 27.5" · Seido Sinus i25 rims, Seido Tau hubs, 32 spokes
4130 double-butted chromoly
Seido Sinus i25, tubeless-ready, 32 spokes; Seido Tau sealed hubs
- Drivetrain
- 2×12
- Groupset
- Shimano GRX 610 2x12
- Brake model
- Shimano GRX BR-RX400 hydraulic
- Seatpost
- Rigid · Ritchey Comp aluminium seatpost 27.2 mm x 400 mm
Shimano GRX 610, 2x12 speed, hydraulic
Shimano GRX BR-RX400 hydraulic disc
Character
The bike at a glance: the ground it is made for, how it handles, its gears and its equipment, beside the other bikes of its kind.
« Gravel bike all-round, rather nimble, average equipment. »
As at ease on rough ground as most other gravel bikes.
Between nimble and stable, like most other gravel bikes.
Gearing
Not enough data yet for this chart: it fills in as soon as the specs are in.
Equipment level
Not enough data yet for this chart: it fills in as soon as the specs are in.
Equipment: mid-range for its category.
Equipment score: 40/100 (frame, groupset, wheels, suspension).
Spec sheet
Every value is read on the brand’s page; hover it to see its source and date.
Ride type
- Ride type
- Being updated
- Suspension
- Rigid
Frame and fork
- Frame
- Steel
- Fork
- Carbon
- Frame weight
- 2,410 g
- Max tyre clearance
- 47 mm
- Axles
- Thru-axles
- Bottom bracket
- T47, 86.5 mm shell
- Cable routing
- Internal
- Seatpost diameter
- 27.2 mm
4130 double-butted chromoly
Seido Banjo full carbon
Thru-axles: 12 x 100 mm (front), 12 x 142 mm (rear)
86.5 mm T47 bottom bracket shell
internal light cable routing
Drivetrain
- Groupset brand
- Shimano
- Groupset
- Shimano GRX 610 2x12
- Shifting
- Mechanical
- Chainrings
- 2
- Gears at the back
- 12
- Chainring teeth
- Shimano GRX FC-RX810-2, 24 mm spindle
- Cassette
- Shimano 105 CS-HG710-12, 11-36T
- Rear derailleur
- Shimano GRX RD-RX820
- Shifters
- Shimano GRX ST-RX610 STI 2 x 12
Shimano GRX 610
Shimano GRX 610, 2x12 speed, hydraulic
Shimano GRX RD-RX820 Shimano GRX ST-RX610 STI 2 x 12
Cassette: Shimano 105 CS-HG710-12, 11–36 T
Brakes
- Brakes
- Hydraulic disc
- Brake model
- Shimano GRX BR-RX400 hydraulic
- Front rotor
- 160 mm
- Rear rotor
- 160 mm
Shimano GRX BR-RX400 hydraulic disc
Shimano GRX BR-RX400 hydraulic disc
Wheels and tyres
- Wheel size
- 650b / 27.5"
- Wheelset
- Seido Sinus i25 rims, Seido Tau hubs, 32 spokes
- Rims
- Aluminium
- Tubeless ready
- yes
- Tyres
- WTB Byway TCS 47-584 front, WTB Horizon TCS 47-584 rear
- Tyre width fitted
- 47 mm
WTB Byway TCS 47-584
Seido Sinus i25, tubeless-ready, 32 spokes; Seido Tau sealed hubs
Tyres: WTB Byway TCS 47-584 (front), WTB Horizon TCS 47-584 (rear)
Cockpit and seatpost
- Seatpost
- Rigid
- Handlebar
- Ritchey Road Comp Streem III drop bar, 31.8 mm, 5° backsweep
- Stem
- Ritchey Comp 4-Axis 44 forged aluminium stem, -6°
- Seatpost model
- Ritchey Comp aluminium seatpost 27.2 mm x 400 mm
Weight
- Weight
- 10.5 kg
- Weighed in size
- M
size M
Mounts and storage
- Rack mounts
- yes
- Mudguard mounts
- yes
Geometry
- Geometry size
- M
- Stack
- 571 mm
- Reach
- 383 mm
- Head angle
- 72 °
- Seat angle
- 74 °
- Chainstays
- 420 mm
- Wheelbase
- 1,018 mm
- Bottom bracket drop
- 68 mm
Spec sheets read at: bombtrack.com
Geometry
5 sizes: XS, S, M, L, XL.
| Geometry of the Audax Evo Grx610 per size | |||||
|---|---|---|---|---|---|
| Reach (mm) | 361 | 373 | 383 | 396 | 408 |
| Stack (mm) | 534 | 553 | 571 | 590 | 609 |
| Top tube (effective) (mm) | 509 | 526 | 547 | 565 | 588 |
| Seat tube (mm) | 470 | 490 | 520 | 550 | 580 |
| Head tube (mm) | 110 | 130 | 150 | 170 | 190 |
| Head angle (°) | 71.5 | 71.5 | 72 | 72 | 72 |
| Seat angle (°) | 74.5 | 74.5 | 74 | 74 | 73.5 |
| Chainstays (mm) | 420 | 420 | 420 | 420 | 420 |
| Wheelbase (mm) | 987 | 1,005 | 1,018 | 1,037 | 1,055 |
| Front centre (mm) | 577 | 595 | 607 | 626 | 643 |
| Standover (mm) | 746 | 765 | 794 | 818 | 841 |
| BB drop (mm) | 68 | 68 | 68 | 65 | 65 |
| Fork offset (mm) | 53 | 53 | 53 | 53 | 53 |
| Trail (mm) | 59 | 59 | 56 | 56 | 56 |
The range
Its comparisons
Comparable gravel bikes
Who is it for?
The sports the brand announces, and the features that go with them.
Cycling
- Max tyre clearance: 47 mm
- Groupset: Shimano GRX 610 2x12
- Weight: 10.5 kg
Frequently asked questions
How wide a tyre fits the Bombtrack Audax Evo Grx610?
Up to 47 mm, according to the brand.
Can the Bombtrack Audax Evo Grx610 take a rack?
Yes: the brand lists rack mounts, bikepacking welcome.
Can the Bombtrack Audax Evo Grx610 take mudguards?
Yes: the brand lists mudguard mounts.




