Bombtrack Hook Ext SX Eagle
Green
Bombtrack Hook Ext SX Eagle
gravel bike, steel frame, 650b / 27.5" wheels, 1×12 drivetrain, entry level equipment
Key specs
- Model year
- 2025
- Weight
- 11.6 kg
- Frame
- Steel
- Wheelset
- 650b / 27.5" · WTB ST Light i25 double wall
Frame: Columbus Cromor double-butted
- Drivetrain
- 1×12
- Groupset
- SRAM SX Eagle
- Brake model
- SRAM Level hydraulic disc
- Seatpost
- Rigid · Bombtrack Yew aluminium seatpost, 27.2 mm x 300 mm
Rear derailleur: SRAM SX Eagle, clutch, long cage
Levers and calipers: SRAM Level 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 rather for smooth ground, rather nimble, entry-level equipment. »
EasyDemanding
Made for smooth ground, more than other gravel bikes.
NimbleStable
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: entry level for its category.
Equipment score: 33/100 (frame, groupset, wheels, suspension).
Hook Ext SX Eagleother gravel bikes
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
- 2,710 g
- Max tyre clearance
- 45 mm
- Axles
- Thru-axles
- Bottom bracket
- SRAM DUB T47, 85.5 mm
- Cable routing
- Internal
- Seatpost diameter
- 27.2 mm
Frame: Columbus Cromor double-butted
Fork: Bombtrack EXT full carbon
Thru-axles: 12 x 100 mm front, 12 x 142 mm rear
Bottom bracket: SRAM DUB T47, 85.5 mm
internal light cable routing
Drivetrain
- Groupset brand
- SRAM
- Groupset
- SRAM SX Eagle
- Shifting
- Mechanical
- Chainrings
- 1
- Gears at the back
- 12
- Chainring teeth
- SRAM Rival Wide, DUB
- Cassette
- SRAM PG-1210 Eagle 11-50T
- Rear derailleur
- SRAM SX Eagle, clutch, long cage
- Shifters
- SRAM SX-Eagle 12-speed shifter
SRAM SX Eagle
Rear derailleur: SRAM SX Eagle, clutch, long cage
SRAM SX Eagle, clutch, long cage SRAM SX-Eagle 12-speed shifter
Crankset: SRAM Rival Wide, DUB spindle, 8-bolt direct mount
Cassette: SRAM PG-1210 Eagle, 12-speed, 11-50T
Brakes
- Brakes
- Hydraulic disc
- Brake model
- SRAM Level hydraulic disc
- Front rotor
- 160 mm
- Rear rotor
- 160 mm
SRAM Level hydraulic disc
Levers and calipers: SRAM Level hydraulic disc
Wheels and tyres
- Wheel size
- 650b / 27.5"
- Wheelset
- WTB ST Light i25 double wall
- Rims
- Aluminium
- Tubeless ready
- yes
- Tyres
- WTB Ranger TCS Light 27.5" x 2.0"
Tires: WTB Ranger TCS Light, 27.5" x 2.0"
Tires: WTB Ranger TCS Light, Fast Rolling, 27.5" × 2.0"
Cockpit and seatpost
- Seatpost
- Rigid
- Handlebar
- Bombtrack Trail flat bar, 31.8 mm, 9° backsweep, 4° upsweep, 7 mm rise
- Stem
- Bombtrack Roam forged aluminium stem, -7°
- Seatpost model
- Bombtrack Yew aluminium seatpost, 27.2 mm x 300 mm
Weight
- Weight
- 11.6 kg
- Weighed in size
- L
11.6 kg (size L)
Mounts and storage
- Rack mounts
- yes
- Mudguard mounts
- yes
Geometry
- Geometry size
- M
- Stack
- 589 mm
- Reach
- 387 mm
- Head angle
- 72 °
- Seat angle
- 74 °
- Chainstays
- 425 mm
- Wheelbase
- 1,025 mm
- Bottom bracket drop
- 70 mm
Spec sheets read at: bombtrack.com
Geometry
5 sizes: XS, S, M, L, XL.
| Geometry of the Hook Ext SX Eagle per size | |||||
|---|---|---|---|---|---|
| Reach (mm) | 365 | 374 | 387 | 396 | 409 |
| Stack (mm) | 554 | 573 | 589 | 608 | 627 |
| Top tube (effective) (mm) | 519 | 533 | 556 | 570 | 595 |
| Seat tube (mm) | 460 | 500 | 530 | 570 | 600 |
| 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 | 74 |
| Chainstays (mm) | 425 | 425 | 425 | 425 | 425 |
| Wheelbase (mm) | 995 | 1,010 | 1,025 | 1,040 | 1,060 |
| Front centre (mm) | 581 | 596 | 610 | 625 | 645 |
| Standover (mm) | 748 | 776 | 803 | 831 | 855 |
| BB drop (mm) | 75 | 75 | 70 | 70 | 70 |
| Fork offset (mm) | 48 | 48 | 48 | 48 | 48 |
| Trail (mm) | 65 | 65 | 62 | 62 | 62 |
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: 45 mm
- Groupset: SRAM SX Eagle
- Weight: 11.6 kg
Frequently asked questions
How wide a tyre fits the Bombtrack Hook Ext SX Eagle?
Up to 45 mm, according to the brand.
Can the Bombtrack Hook Ext SX Eagle take a rack?
Yes: the brand lists rack mounts, bikepacking welcome.
Can the Bombtrack Hook Ext SX Eagle take mudguards?
Yes: the brand lists mudguard mounts.