
Bombtrack Audax Tiagra Rd-4700-gs

Bombtrack Audax Tiagra Rd-4700-gs
gravel bike, aluminium frame, 700c wheels, 2×10 drivetrain, entry level equipment
Key specs
- Model year
- 2026
- Weight
- 10.3 kg
- Frame
- Aluminium
- Wheelset
- 700c · Seido Sinus i21 rims, Bombtrack Arc hubs, 32 spokes
6061-T6 double-butted aluminium
Rims: Seido Sinus i21, tubeless ready, 32 spokes; Bombtrack Arc sealed hubs
- Drivetrain
- 2×10
- Groupset
- Shimano Tiagra 4700 2x10
- Brake model
- TRP Spyre C flat mount, Tiagra ST-4700 levers
- Seatpost
- Rigid · Seido Beech 27.2 mm x 350 mm
Groupset: Shimano Tiagra 4700; ST-4700 STI, 2x10; RD-4700-GS
Brakes: TRP Spyre C, flat mount, mechanical disc; Levers: Shimano Tiagra ST-4700 STI
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 made for very smooth ground, entry-level equipment. »
Made for smooth ground, more than other gravel bikes.
Not enough data yet for this chart: it fills in as soon as the specs are in.
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: entry level for its category.
Equipment score: 38/100 (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
- Aluminium
- Fork
- Carbon
- Frame weight
- 1,810 g
- Max tyre clearance
- 50 mm
- Axles
- Thru-axles
- Bottom bracket
- T47, 86.5 mm shell
- Seatpost diameter
- 27.2 mm
6061-T6 double-butted aluminium
Full carbon, thru-axle (TA)
Through axles: Front 12 x 100 mm; rear 12 x 142 mm
Seido T47 internal sealed, 86.5 mm shell
Drivetrain
- Groupset brand
- Shimano
- Groupset
- Shimano Tiagra 4700 2x10
- Shifting
- Mechanical
- Chainrings
- 2
- Gears at the back
- 10
- Chainring teeth
- Shimano Tiagra FC-4700, 24 mm spindle
- Cassette
- Shimano CS-HG500, 11-34T
- Rear derailleur
- Shimano Tiagra RD-4700-GS
- Shifters
- Shimano Tiagra ST-4700 STI 2 x 10
Shimano Tiagra 4700
Groupset: Shimano Tiagra 4700; ST-4700 STI, 2x10; RD-4700-GS
Shimano Tiagra RD-4700-GS Shimano Tiagra ST-4700 STI 2 x 10
Shimano Tiagra FC-4700, 24 mm spindle, 110 mm BCD
Cassette: Shimano CS-HG500, 10-speed, 11–34T
Brakes
- Brakes
- Mechanical disc
- Brake model
- TRP Spyre C flat mount, Tiagra ST-4700 levers
- Front rotor
- 160 mm
- Rear rotor
- 160 mm
TRP Spyre C, flat mount, mechanical disc
Brakes: TRP Spyre C, flat mount, mechanical disc; Levers: Shimano Tiagra ST-4700 STI
Wheels and tyres
- Wheel size
- 700c / 29"
- Wheelset
- Seido Sinus i21 rims, Bombtrack Arc hubs, 32 spokes
- Rims
- Aluminium
- Tubeless ready
- yes
- Tyres
- WTB Byway TCS 34-622
- Tyre width fitted
- 34 mm
WTB Byway TCS 34-622 (700 x 34 mm)
Rims: Seido Sinus i21, tubeless ready, 32 spokes; Bombtrack Arc sealed hubs
WTB Byway TCS 34-622, tubeless ready (700 x 34 mm)
Cockpit and seatpost
- Seatpost
- Rigid
- Handlebar
- Seido CX-10 drop bar, 31.8 mm, 10° flare
- Stem
- Seido Meander forged aluminium stem, -6°
- Seatpost model
- Seido Beech 27.2 mm x 350 mm
Weight
- Weight
- 10.3 kg
- Weighed in size
- L
- Max total weight
- 120 kg
size L
Mounts and storage
- Rack mounts
- Being updated
- Mudguard mounts
- yes
Spec sheets read at: bombtrack.com
The range
Its comparisons
Comparable gravel bikes


- Shimano GRX RX820
- Aluminium

- Shimano GRX RX822
- Aluminium

Who is it for?
The sports the brand announces, and the features that go with them.
Cycling
- Max tyre clearance: 50 mm
- Groupset: Shimano Tiagra 4700 2x10
- Weight: 10.3 kg
Frequently asked questions
How wide a tyre fits the Bombtrack Audax Tiagra Rd-4700-gs?
Up to 50 mm, according to the brand.
Can the Bombtrack Audax Tiagra Rd-4700-gs take mudguards?
Yes: the brand lists mudguard mounts.
