Bombtrack Audax Al Sword vs Bombtrack Hook Grx400

Bombtrack

Audax Al Sword

Bombtrack

Hook Grx400

Entry levelAluminium650b / 27.5"2025

Entry levelSteel29" front, 27.5" rear2024

Close on the specs and the list price: here are their 22 differences, line by line.

BombtrackBombtrack Audax Al Sword

BombtrackBombtrack Hook Grx400

At a glance

Differences only

Bombtrack Audax Al Sword is 300 g lighter than Bombtrack Hook Grx400 (brand figures).
Bombtrack Audax Al Sword is the newer model (2025).

Key specs8 differences

Model year 2025 2024

Weight 10.7 kg 11 kg +300 g

Frame Aluminium

As printed

6061-T6 double-butted aluminium

Steel

As printed

Frame: Columbus Cromor steel, double-butted

Wheelset 650b / 27.5" · WTB ST i21 rims, Bombtrack Arc hubs, 32 holes

As printed

WTB ST i21 double-wall rims, TCS 2.0, 32 holes; Bombtrack Arc sealed hubs

29" front, 27.5" rear · WTB ST i19 double wall ^{°Value not published by the brand}

Drivetrain 1×10 2×10

Groupset Microshift Sword 1x10

As printed

Groupset: Microshift Sword (shifters, rear derailleur, cassette)

Shimano GRX RX400

As printed

Shifters: Shimano GRX ST-RX400, 2x10; Rear derailleur: Shimano GRX RD-RX400

Brake model TRP Spyre C flat-mount

As printed

TRP Spyre C flat-mount mechanical disc brakes

Shimano GRX hydraulic disc

As printed

Levers and calipers: Shimano GRX hydraulic disc

Seatpost Rigid · Seido Yew Offset 27.2 mm x 355 mm ^{°Value not published by the brand} Rigid · BOMBTRACK BEECH 27.2 mm x 300 mm ^{°Value not published by the brand}

Prices

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

Bombtrack Audax Al Sword

Bombtrack Hook Grx400

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 Al Sword · Gravel bike all-round, very nimble, entry-level equipment.
Hook Grx400 · Gravel bike rather for smooth ground, neutral handling, entry-level equipment.

Terrain

EasyDemanding

Handling

NimbleStable

Bombtrack Audax Al SwordBombtrack Hook Grx400other 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 fork3 differences

Fork Carbon

As printed

Fork: Full carbon

Carbon

As printed

Fork: Full carbon

Frame weight 1,810 g 2,420 g +610 g

Max tyre clearance 50 mm 45 mm ^{°Value not published by the brand}−5 mm

Axles Thru-axles

As printed

12 x 100 mm front and 12 x 142 mm rear through axles

Thru-axles

As printed

Through axles: 12 x 100 mm front, 12 x 142 mm rear

Bottom bracket T47, 86.5 mm shell

As printed

86.5 mm T47 bottom bracket shell

Bombtrack T47 internal sealed, 86.5 mm shell

As printed

Bottom bracket: Bombtrack T47 internal sealed, 86.5 mm shell

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

Drivetrain6 differences

Groupset brand microSHIFT

As printed

Microshift Sword

Shimano

As printed

Shimano GRX ST-RX400

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

As printed

Microshift Sword RD-G7025L, clutch, medium cage Microshift Sword SB-G7000 dual control lever 1 x 10

Mechanical ^{°Value not published by the brand}

As printed

SHIMANO GRX RD-RX400, clutch SHIMANO GRX ST-RX400 STI 2 x 10

Chainrings 1 2 +1

Gears at the back 10 10

Chainring teeth Bombtrack Lyer forged aluminium crank, direct mount interface, (SRAM compatible),30 mm spindle ^{°Value not published by the brand} Shimano GRX FC-RX600-10

As printed

Crankset: Shimano GRX FC-RX600-10, 24 mm spindle

Cassette Microshift CS-H105, 11-48T

As printed

Cassette: Microshift CS-H105, 11-48T

Shimano CS-HG50 11-36T

As printed

Cassette: Shimano CS-HG50, 10-speed, 11-36T

Rear derailleur Microshift Sword RD-G7025L, clutch, medium cage ^{°Value not published by the brand} SHIMANO GRX RD-RX400, clutch ^{°Value not published by the brand}

Shifters Microshift Sword SB-G7000 dual control lever 1 x 10 ^{°Value not published by the brand} SHIMANO GRX ST-RX400 STI 2 x 10 ^{°Value not published by the brand}

Brakes1 difference

Brakes Mechanical disc

As printed

TRP Spyre C flat-mount mechanical disc brakes

Hydraulic disc

As printed

Levers and calipers: Shimano GRX hydraulic disc

Front rotor 160 mm 160 mm

Rear rotor 160 mm 160 mm

Wheels and tyres2 differences

Wheel size 650b / 27.5"

As printed

WTB Horizon 47-584 (650B x 47C)

29" front, 27.5" rear ^{°Value not published by the brand}

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

Tubeless ready– yes

Tyres WTB Horizon 47-584

As printed

Tyres: WTB Horizon 47-584 (650B x 47C)

XS - S WTB RESOLUTE 42-584 /, M - XL WTB VENTURE 40-622, tubeless ready ^{°Value not published by the brand}

Tyre width fitted 47 mm –

Cockpit and seatpost3 differences

Handlebar Seido CX-10 drop bar, 31.8 mm, 10° flare ^{°Value not published by the brand} BOMBTRACK CX-10 drop bar, 31.8 mm, 10° flare ^{°Value not published by the brand}

Stem Seido Meander forged aluminium stem, -6° ^{°Value not published by the brand} BOMBTRACK ROAM forged aluminium stem, -7° ^{°Value not published by the brand}

Seatpost model Seido Yew Offset 27.2 mm x 355 mm ^{°Value not published by the brand} BOMBTRACK BEECH 27.2 mm x 300 mm ^{°Value not published by the brand}

Weight

Weighed in size M

As printed

size M

As printed

Complete bike: 11.0 kg (size M)

Mounts and storage

Rack mounts– yes

Mudguard mounts yes yes

Top tube mounts– 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 Al Sword

Size of Hook Grx400

Differences measured from

Audax Al Sword · M
Hook Grx400 · M

Stack and reach

Audax Al Sword · M Audax Al Sword · M — Reach (mm) 390 · Stack (mm) 561
Hook Grx400 · M Hook Grx400 · M — Reach (mm) 378 · Stack (mm) 565

Geometry12 differences

Size M M

Reach 390 mm 378 mm −12 mm

Stack 561 mm 565 mm +4 mm

Top tube (effective) 551 mm 540 mm −11 mm

Seat tube 530 mm 525 mm −5 mm

Head tube 150 mm 130 mm −20 mm

Head angle 72° 72°

Seat angle 74° 74°

Chainstays 420 mm 425 mm +5 mm

Wheelbase 1,019 mm 1,010 mm −9 mm

Front centre 608 mm 594 mm −14 mm

Standover 782 mm 802 mm +20 mm

BB drop 68 mm 67 mm −1 mm

Fork offset 53 mm 48 mm −5 mm

Trail 58 mm 64 mm +6 mm

BB height– 282 mm

Where to buy them

Bombtrack Audax Al Sword
Its full spec sheet Compare the whole Bombtrack Audax range
Bombtrack Hook Grx400
Its full spec sheet Compare the whole Bombtrack Hook range

Compare the whole Bombtrack Audax range Compare the whole Bombtrack Hook range

Frequently asked questions

Which is lighter, Bombtrack Audax Al Sword or Bombtrack Hook Grx400?

Bombtrack Audax Al Sword weighs 10.7 kg, Bombtrack Hook Grx400 11 kg, as their brands give them.

What groupset do Bombtrack Audax Al Sword and Bombtrack Hook Grx400 come with?

Bombtrack Audax Al Sword: Microshift Sword 1x10. Bombtrack Hook Grx400: Shimano GRX RX400.

How do Bombtrack Audax Al Sword and Bombtrack Hook Grx400 compare on geometry?

In size M, Bombtrack Audax Al Sword has a stack of 561 mm for a reach of 390 mm; in size M, Bombtrack Hook Grx400 has 565 mm for 378 mm. More stack for the reach means a more upright position.

Compare other models

Bombtrack Audax Al Sword vs Bombtrack Hook Grx400

At a glance

Prices

Character

Components and specs

Geometry

Stack and reach

Where to buy them

Frequently asked questions

Other comparisons