Bombtrack Audax Evo Grx610 vs Bombtrack Audax Grx810

Bombtrack

Audax Evo Grx610

Bombtrack

Audax Grx810

Mid-rangeSteel650b / 27.5"2025

Entry levelSteel650b / 27.5"2024

Two builds of the Bombtrack Audax line: 15 differences, mostly in the components.

BombtrackBombtrack Audax Evo Grx610

BombtrackBombtrack Audax Grx810

At a glance

Differences only

Bombtrack Audax Evo Grx610 is 300 g lighter than Bombtrack Audax Grx810 (brand figures).
Bombtrack Audax Evo Grx610 has the higher-range groupset: Shimano GRX 610 2x12, against Shimano GRX 600 2x11.
Bombtrack Audax Evo Grx610 is the newer model (2025).

Key specs7 differences

Model year 2025 2024

Weight 10.5 kg 10.8 kg +300 g

Frame Steel

As printed

4130 double-butted chromoly

Steel

As printed

Columbus Cromor double-butted steel

Wheelset 650b / 27.5" · Seido Sinus i25 rims, Seido Tau hubs, 32 spokes

As printed

Seido Sinus i25, tubeless-ready, 32 spokes; Seido Tau sealed hubs

650b / 27.5" · WTB ST i25 rims, Bombtrack Tau hubs, 32 spokes

As printed

WTB ST i25 double-wall rims, 32 spokes, TCS 2.0; Bombtrack Tau sealed hubs

Drivetrain 2×12 2×11

Groupset Shimano GRX 610 2x12 Higher range

As printed

Shimano GRX 610, 2x12 speed, hydraulic

Shimano GRX 600 2x11

As printed

Shimano GRX 600 (2x11); RD GRX RD-RX810, FD GRX FD-RX810, shifters GRX ST-RX600

Brake model Shimano GRX BR-RX400 hydraulic

As printed

Shimano GRX BR-RX400 hydraulic disc

Shimano GRX BR-RX400 hydraulic, GRX ST-RX600 levers

As printed

Shimano GRX BR-RX400 hydraulic disc brakes with GRX ST-RX600 hydraulic levers

Seatpost Rigid · Ritchey Comp aluminium seatpost 27.2 mm x 400 mm ^{°Value not published by the brand} Rigid · RITCHEY COMP 2-BOLT aluminium seatpost 27.2 mm x 400 mm ^{°Value not published by the brand}

Prices

Each model's retailers, delivered to your country, and their prices over time.

Bombtrack Audax Evo Grx610

Bombtrack Audax Grx810

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.

Audax Evo Grx610 · Gravel bike all-round, rather nimble, average equipment.
Audax Grx810 · Gravel bike all-round, rather nimble, entry-level equipment.

Terrain

EasyDemanding

Handling

NimbleStable

Bombtrack Audax Evo Grx610Bombtrack Audax Grx810other gravel bikes

Components and specs

Every spec line by line; the higher range of a component is marked. The technical groups are folded.

Ride type

Suspension Rigid ^{°Value not published by the brand} Rigid ^{°Value not published by the brand}

Frame and fork1 difference

Fork Carbon

As printed

Seido Banjo full carbon

Carbon

As printed

Fork: Full carbon

Frame weight 2,410 g 2,410 g

Max tyre clearance 47 mm 47 mm

Axles Thru-axles

As printed

Thru-axles: 12 x 100 mm (front), 12 x 142 mm (rear)

Thru-axles

As printed

Thru-axles are 12x100 mm front and 12x142 mm rear

Bottom bracket T47, 86.5 mm shell

As printed

86.5 mm T47 bottom bracket shell

BOMBTRACK T47 internal sealed BB for 30 mm spindle ^{°Value not published by the brand}

Cable routing Internal ^{°Value not published by the brand}

As printed

internal light cable routing

Internal ^{°Value not published by the brand}

As printed

internal light cable routing

Seatpost diameter 27.2 mm ^{°Value not published by the brand} 27.2 mm

Drivetrain5 differences

Groupset brand Shimano

As printed

Shimano GRX 610

Shimano

As printed

Shimano GRX 600

Shifting Mechanical ^{°Value not published by the brand}

As printed

Shimano GRX RD-RX820 Shimano GRX ST-RX610 STI 2 x 12

Mechanical ^{°Value not published by the brand}

As printed

SHIMANO ULTEGRA RD-RX800-GS, clutch, medium cage SHIMANO 105 ST-R7020 STI 2 x 11

Chainrings 2 2

Gears at the back 12 11 −1

Chainring teeth Shimano GRX FC-RX810-2, 24 mm spindle BOMBTRACK LYER forged aluminium crank, direct mount interface, (SRAM compatible),30 mm spindle ^{°Value not published by the brand}

Cassette Shimano 105 CS-HG710-12, 11-36T

As printed

Cassette: Shimano 105 CS-HG710-12, 11–36 T

Shimano 105, 11-34T

As printed

11-speed cassette, 11–34T (Shimano 105)

Rear derailleur Shimano GRX RD-RX820 ^{°Value not published by the brand} SHIMANO ULTEGRA RD-RX800-GS, clutch, medium cage ^{°Value not published by the brand}

Shifters Shimano GRX ST-RX610 STI 2 x 12 ^{°Value not published by the brand} SHIMANO 105 ST-R7020 STI 2 x 11 ^{°Value not published by the brand}

Brakes

Brakes Hydraulic disc

As printed

Shimano GRX BR-RX400 hydraulic disc

Hydraulic disc

As printed

Shimano GRX BR-RX400 hydraulic disc brakes

Front rotor 160 mm 160 mm

Rear rotor 160 mm 160 mm

Wheels and tyres

Wheel size 650b / 27.5"

As printed

WTB Byway TCS 47-584

650b / 27.5"

As printed

WTB Byway TCS 47-584

Rims Aluminium ^{°Value not published by the brand} Aluminium ^{°Value not published by the brand}

Tubeless ready yes yes ^{°Value not published by the brand}

Tyres WTB Byway TCS 47-584 front, WTB Horizon TCS 47-584 rear

As printed

Tyres: WTB Byway TCS 47-584 (front), WTB Horizon TCS 47-584 (rear)

WTB Byway TCS 47-584 front, WTB Horizon TCS 47-584 rear

Tyre width fitted 47 mm 47 mm

Cockpit and seatpost2 differences

Handlebar Ritchey Road Comp Streem III drop bar, 31.8 mm, 5° backsweep ^{°Value not published by the brand} RITCHEY COMP STREEM III drop bar, 31.8 mm, 5° backsweep ^{°Value not published by the brand}

Stem Ritchey Comp 4-Axis 44 forged aluminium stem, -6° ^{°Value not published by the brand} RITCHEY COMP 4-AXIS 44 forged aluminium stem, -6° ^{°Value not published by the brand}

Seatpost model Ritchey Comp aluminium seatpost 27.2 mm x 400 mm ^{°Value not published by the brand} RITCHEY COMP 2-BOLT aluminium seatpost 27.2 mm x 400 mm ^{°Value not published by the brand}

Weight

Weighed in size M

As printed

size M

As printed

size M

Max total weight– 120 kg

Mounts and storage

Rack mounts yes yes

Mudguard mounts yes yes

° Value not published by the brand

Geometry

A size per bike (the nearest to the first one's at first), the differences measured from the reference bike.

Size of Audax Evo Grx610

Size of Audax Grx810

Differences measured from

Audax Evo Grx610 · M
Audax Grx810 · M

Stack and reach

Audax Evo Grx610 · M Audax Evo Grx610 · M — Reach (mm) 383 · Stack (mm) 571
Audax Grx810 · M Audax Grx810 · M — Reach (mm) 384 · Stack (mm) 574

Geometry5 differences

Size M M

Reach 383 mm 384 mm +1 mm

Stack 571 mm 574 mm +3 mm

Top tube (effective) 547 mm 544 mm −3 mm

Seat tube 520 mm 520 mm

Head tube 150 mm 145 mm −5 mm

Head angle 72° 72°

Seat angle 74° 74°

Chainstays 420 mm 420 mm

Wheelbase 1,018 mm 1,018 mm

Front centre 607 mm 607 mm

Standover 794 mm 793 mm −1 mm

BB drop 68 mm 68 mm

Fork offset 53 mm 53 mm

Trail 56 mm 56 mm

Where to buy them

Bombtrack Audax Evo Grx610
Its full spec sheet Compare the whole Bombtrack Audax range
Bombtrack Audax Grx810
Its full spec sheet Compare the whole Bombtrack Audax range

Compare the whole Bombtrack Audax range

Frequently asked questions

Which is lighter, Bombtrack Audax Evo Grx610 or Bombtrack Audax Grx810?

Bombtrack Audax Evo Grx610 weighs 10.5 kg, Bombtrack Audax Grx810 10.8 kg, as their brands give them.

What groupset do Bombtrack Audax Evo Grx610 and Bombtrack Audax Grx810 come with?

Bombtrack Audax Evo Grx610: Shimano GRX 610 2x12. Bombtrack Audax Grx810: Shimano GRX 600 2x11.

How do Bombtrack Audax Evo Grx610 and Bombtrack Audax Grx810 compare on geometry?

In size M, Bombtrack Audax Evo Grx610 has a stack of 571 mm for a reach of 383 mm; in size M, Bombtrack Audax Grx810 has 574 mm for 384 mm. More stack for the reach means a more upright position.

Compare other models

Bombtrack Audax Evo Grx610 vs Bombtrack Audax Grx810

At a glance

Prices

Character

Components and specs

Geometry

Stack and reach

Where to buy them

Frequently asked questions

Other comparisons