An advanced gravel adventure bike with a strong off-road focus: the Hook EXT Apex Eagle features a 1×12 drivetrain, 27.5” wheels, and a stable geometry designed to tackle technical gravel, demanding climbs, and multi-day bikepacking. A solid, no-nonsense platform built to push beyond the beaten path.
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What to expect from the Hook EXT Apex Eagle
The Hook EXT Apex Eagle in Metallic Sunglow Fade is designed for riders who see exploration as a natural way to ride.
The warm fade recalls open landscapes and sunlit dirt routes, but the true identity of this bike lies in its ability to go beyond the limits of traditional gravel bikes.
This version of the Hook is built for more demanding terrain: technical dirt roads, light singletrack, tough climbs and mixed surfaces that often change in consistency. The SRAM Apex Eagle 1×12 groupset delivers a wide and quiet gear range, ideal even when the bike is loaded with bags. The Columbus Cromor steel frame offers control and predictability, while the 27.5” wheels increase grip and comfort.
If you are looking for an honest, capable bike built to take you far without complications, the Hook EXT Apex Eagle is a solid and reliable companion.
Want to understand whether a Hook or a Hook EXT makes more sense for your riding? We break it down in this dedicated guide.
What really sets a Hook EXT apart
Advanced off-road DNA
More stable and more dirt-focused than the standard Hook
More agile than the Beyond, ideal for mixed routes
Geometry designed for confidence on rough terrain and smoothness on asphalt
Optimized for 27.5”
Superior traction on technical surfaces
Predictable handling even with bikepacking bags
Steel comfort and control
The frame responds progressively, especially on long rides
It maintains stability even when fully loaded
Key strengths
SRAM Apex Eagle 1×12 drivetrain with wide range
27.5” tubeless-ready wheels for maximum traction
Full carbon fork with multiple mounts
Robust frame with numerous mounts for bags and racks
Designed for long distances and technical routes
Short description
A modern and durable adventure gravel bike, built to handle real dirt roads, light trails and multi-day travel. The Eagle + 27.5” + balanced geometry combination makes it ideal for riders who like to go beyond the more beaten paths.
Ideal for
Technical gravel and rough terrain
Demanding climbs on mixed routes
Self-supported bikepacking
Long days on forest roads and dirt routes
Technical specifications (summary)
Main data
Frame: double-butted steel
Fork: full carbon
Groupset: SRAM Apex Eagle 1×12
Brakes: SRAM hydraulic
Wheels: 27.5” tubeless-ready
Mounts: multiple mounts for bags and racks
Seatpost: 27.2 mm
Tire clearance
Frame – max without fenders
650B × 52C
700C × 40C
Fork – max without fenders
650B × 57C
700C × 57C
Technical analysis of clearances
This Hook EXT offers greater setup freedom than average:
On the frame, the real limit is 52 mm in 27.5”, the crucial size to respect
In 700C (not original spec), the frame goes up to 40 mm, ideal for faster gravel setups
The fork is much more permissive (up to 57 mm), opening up advanced configurations such as:
a wider front tire than rear (mullet width)
a front traction bias typical of technical bikepacking
This asymmetry makes the Hook EXT extremely versatile, especially for more experienced riders.
Rider Fit – How to choose the right size
XS: 150–161 cm
S: 160–171 cm
M: 170–181 cm
L: 179–190 cm
XL: 188–199 cm
For a precise assessment, just send us your height + inseam.
Recommended setups
Frame + handlebar + saddle bags for a light adventure setup
Wider front tire for more control on technical terrain
Full touring rack compatibility
Excellent base for dynamo systems
Why choose Metallic Sunglow Fade
A bright and distinctive finish, able to highlight the lines of the Hook EXT and ensure excellent visibility. A choice that communicates adventure and identity.
What independent reviews say
A stable, adventure-ready platform, ideal for demanding dirt riding.
The Eagle groupset offers exceptional versatility on long climbs and under full load.
A bike that pushes you to explore without limits.
Why buy from us
Tracked express shipping across Europe
Bilingual support
Replies within 24h
Concrete pre-purchase advice
CTA
Ready to start your next adventure? Add the Hook EXT Apex Eagle 2025 – Metallic Sunglow Fade to your cart or contact us: info@bikejamming.it
Frequently asked questions about the Bombtrack Hook EXT Apex Eagle
Is the Bombtrack Hook EXT Apex Eagle suitable for bikepacking?
Yes. It is a very suitable platform for light to medium bikepacking, especially on mixed routes, continuous dirt roads and forest roads. The many mounting points and stable geometry allow you to fit bags and accessories without losing control on rough terrain.
Is it more of a gravel bike or an adventure bike?
The Hook EXT sits between the two categories, but with a more off-road orientation than a traditional gravel bike. It is better suited to technical terrain, steep climbs and bikepacking setups than many fast gravel bikes designed for asphalt and hardpacked roads.
Is the SRAM Apex Eagle 1x12 drivetrain suitable for touring?
Yes. The 1x12 single-chainring setup with 11–50T cassette offers a very wide range, useful on demanding climbs and mixed routes with load. It is a particularly coherent choice for riders who prioritize simplicity, quiet operation and intuitive drivetrain management.
Why does the Hook EXT use 27.5” wheels?
27.5” wheels allow generous tire volume while keeping the bike compact, agile and highly effective on technical terrain. In this configuration, the Hook EXT prioritizes grip, comfort and control over pure rolling speed on asphalt.
Can it also be used for long trips with bags?
Yes, especially if the trip includes dirt roads, variable surfaces and a bikepacking or mixed load setup. For heavier and more structured expeditions, with very substantial and continuous load, however, a platform like the Beyond remains more suitable.
What is the difference compared to the Bombtrack Beyond?
The Hook EXT is more agile, quicker in changes of pace and more oriented toward technical gravel/adventure use. The Beyond is instead more stable under heavy load, more touring-oriented in its design and better suited to long and structural travel on demanding terrain.
Specifications
Colorway 1
Matt Black
Colorway 2
Matt Teal
Colorway 3
Metallic Sunglow Fade
Frame
Double-butted Columbus Cromor, TA, rack/fender mounts, internal light cable routing, rear light mount, ED coating, 85.5 mm T47 bottom bracket shell
Fork
Seido MGV full carbon, TA, 1.5"–1 1/8", fender/triple cage mounts, max 180 mm rotor, lowrider compatible, internal dynamo cable routing
WTB Ranger TCS Light/Fast Rolling 27.5" × 2.0", tubeless ready
Rear tire
WTB Ranger TCS Light/Fast Rolling 27.5" × 2.0", tubeless ready
Fenders
–
Rack
–
Kickstand
–
Lights
–
Bike weight
11.7 kg (size M)
Frameset weight
Frame 2710 g (size L, incl. TA and hanger) / Fork 550 g (300 mm steerer, incl. TA)
Maximum rider weight
130 kg (including luggage)
ASTM
Condition 2
The final product may vary in appearance, finish and some minor details.
Assembly information
Bottom bracket standard
T47 – shell width 85.5 mm
Headset standard (S.H.I.S.)
EC34 / 28.6 • EC44 / 40
Headset crown race angle
45°
Fork steerer inner diameter
23.6 mm
Max fork tire clearance (without fender)
650B × 57C / 700C × 57C
Max frame tire clearance (without fender)
650B × 52C / 700C × 40C
Max 1x chainring clearance
44T with 45 mm chainline
Max 2x chainrings clearance
50 / 36T with 45 mm chainline
Seatpost diameter
27.2 mm
Seat clamp diameter
29.8 mm
Front derailleur clamp diameter
28.6 mm
Front derailleur compatibility
Yes
Front brake mount
FM 160 / 180
Rear brake mount
FM 140 / 160
Rear brake mount area thickness
10 mm
Maximum front rotor size
180 mm
Maximum rear rotor size
160 mm
Front thru axles
12 × 100 mm, thread pitch 1.5
Rear thru axles
12 × 142 mm, thread pitch 1.5
ISO test standard
Road
Crank length
XS 165 mm • S–M 170 mm • L–XL 175 mm
Q Factor
152 mm
Crank BCD
Direct Mount (SRAM compatible)
Chainring offset
6 mm
Chainline
47.5 mm
Front wheel spoke length
tba
Rear wheel spoke length
tba
Spoke count (front/rear)
32 / 32
Rim ERD
551 mm
Front hub PCD
58 mm
Rear hub PCD
58 mm
Front hub flange distance / offset
56.5 mm center-to-center / 6.6 mm
Rear hub flange distance / offset
51 mm center-to-center / 8.8 mm
Stem length
XS–S 80 mm • M 90 mm • L–XL 100 mm
Stem angle
-6°
Headset spacers
1 × 10 mm, 2 × 5 mm
Seatpost offset
0 mm
Seatpost length
350 mm
Bike trailer
Approved
Child seat on seat tube
Approved
Derailleur hanger
BT-DH-008
Frame small parts
BT-CR-007 / BT-CR-006
Front hub end caps
BT-HC-014
Rear hub end caps
BT-HC-017
Freehub body
BT-CB-006
Crank bolt
BT-CRP-002
Front thru axle
BT-TA-F-601
Rear thru axle
BT-TA-R-602
Geometry
Item / Size
XS
S
M
L
XL
Wheel size
27.5"
27.5"
27.5"
27.5"
27.5"
Seat tube length (mm)
460
500
530
570
600
Horizontal top tube (mm)
520
534
558
572
597
Seat tube angle
73.9°
73.9°
73.5°
73.5°
73.0°
Head angle
70.9°
70.9°
71.5°
71.5°
71.5°
Head tube length (mm)
110
130
150
170
190
BB Drop (mm)
71
71
66
66
66
Chainstay length (mm)
425
425
425
425
425
Fork offset (mm)
53
53
53
53
53
Trail (mm)
64
64
61
60
60
Wheelbase (mm)
1003
1018
1034
1049
1068
Standover (mm)
753
782
805
834
857
Reach (mm)
360
369
381
390
403
Stack (mm)
558
577
593
612
631
Front center (mm)
588
603
618
632
652
Axle to crown (mm)
410
410
410
410
410
Minimum rider height ¹ (mm)
1500
1600
1700
1790
1880
Maximum rider height ¹ (mm)
1610
1710
1810
1900
1990
Bike size recommendations are intended as a useful general guideline to quickly narrow down the options based on rider height. Bike fitting is a complex topic and also requires considering other measurements and factors. Since no two human bodies are perfectly identical, it is not possible to provide a recommendation that is 100% accurate for everyone. As a result, Bombtrack cannot guarantee that the stated recommendations are correct for every individual customer. The best way to determine the correct size is to contact your Bombtrack dealer (info@bikejamming.it) or a professional bike fitter, who can identify the most suitable size.
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