Off-road focused gravel adventure bike, built for riders seeking control, traction, and ease of use across variable terrain. The Hook EXT Apex Eagle pairs a 1×12 drivetrain, 27.5” wheels, and a steel frame to handle technical gravel, light bikepacking, and long mixed-terrain rides with stable, direct, and predictable handling.
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Introduction
This Hook EXT is built to earn your trust, mile after mile.
The SRAM Apex Eagle 1×12 drivetrain offers a wide and reliable gear range, while the 27.5” wheels ensure traction and control even when the terrain becomes loose. The frame behavior immediately inspires confidence: stable on technical ground, smooth on asphalt, intuitive everywhere.
If you are looking for an adventure bike that puts substance first — and supports you in a quiet and consistent way — this is the most understated version of the Hook EXT. And as always, we can help you choose the right size and compare it with other models.
The Hook EXT Apex Eagle in Matt Black is the aesthetic expression of pure functionality. An essential bike, free from excess, created for riders who see every component as a tool and every ride as a chance to go farther. The matte black finish highlights the frame lines and conveys solidity, discretion and the kind of determination typical of bikes built to last.
To better understand the differences, materials, and design logic of the range, read our complete Hook EXT guide.
Why Hook EXT
More stable than the standard Hook, ideal for more demanding dirt routes
More agile than the Beyond, perfect for dynamic routes
Designed for wide tires, light trails and bikepacking
Balanced geometry: control on technical terrain, smooth rolling at speed
Columbus Cromor steel: natural comfort and predictable handling
Key strengths
SRAM Apex Eagle 1×12 drivetrain with wide range for long climbs
27.5” tubeless-ready wheels for maximum traction
Full carbon fork with multiple mounts
Robust, comfortable frame ready for travel
Complete mounts: bottle cages, top tube, fenders, racks
Short description
A robust and versatile adventure gravel bike, built around the Eagle 1×12 drivetrain and designed to handle real dirt roads, mixed routes and self-supported travel.
Ideal for
Technical gravel and loose terrain
Self-supported bikepacking
Steep climbs, dirt descents, natural routes
Long rides all year round
Technical specifications (summary)
Frame: double-butted steel Fork: full carbon with multiple mounts Drivetrain: SRAM Apex Eagle 1×12 Brakes: SRAM hydraulic disc brakes Wheels: 27.5” tubeless-ready Seatpost: 27.2 mm Mounts: rack, bags, top tube bag
Tire clearance
Frame – max without fenders
650B × 52C
700C × 40C
Fork – max without fenders
650B × 57C
700C × 57C
Technical interpretation
The Hook EXT allows advanced configurations thanks to the difference between frame and fork clearance.
The frame defines the limit: max 52 mm in 27.5 and 40 mm in 700C.
The fork, by contrast, goes up to 57 mm in both formats.
Possible advanced setups
1) Mullet Width Setup
Wider front tire than rear
More confidence and control on technical riding
Ideal on descents with coarse gravel or light roots
2) Front Traction Bias (technical bikepacking style)
Front: wide tire for grip and absorption
Rear: narrower tire for rolling speed and zero rubbing
Perfect for long stages on variable terrain
This feature clearly sets the Hook EXT apart from many competing gravel bikes.
Rider Fit (recommended sizes)
XS: 150–161 cm S: 160–171 cm M: 170–181 cm L: 179–190 cm XL: 188–199 cm
Free sizing advice: send us your height + inseam.
Recommended setups
Frame + saddle + handlebar bags for light travel
Wider front tire for technical sections
Compatible with front and rear racks
Excellent base for dynamo hubs
Why Matt Black
Matte black expresses solidity and understatement. It integrates perfectly with gear, bags and accessories of every kind. A timeless choice.
Independent reviews
A stable and confident bike on the most uneven terrain.
The Eagle drivetrain offers ideal versatility for travel and demanding climbs.
A platform that invites you to keep going a little farther.
Why buy from us
Tracked express shipping (free in Italy – international: fast quote)
Bilingual support (IT/EN)
Clear and knowledgeable pre-purchase advice
Reply within 24 real hours
CTA
Ready to explore with discretion and confidence? Add the Hook EXT Apex Eagle 2025 – Matt Black to your cart.
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 continuous dirt roads, forest roads and mixed routes where control, reliability and adaptability matter. The numerous mounting points allow bags and accessories to be fitted without compromising the ride quality.
Is it more of a gravel bike or an adventure bike?
It sits between the two categories, but with a more off-road setup than a traditional gravel bike. It is better suited to technical terrain, steep climbs and light touring configurations than many gravel bikes focused mainly on rolling efficiency and speed.
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 long climbs and variable routes with load. It is a particularly coherent choice for riders who want mechanical simplicity, fewer complications and intuitive gear management.
Why does the Hook EXT use 27.5” wheels?
27.5” wheels make it possible to keep the bike compact, agile and highly effective on technical surfaces, especially when running high-volume tires. 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 when the trip includes dirt roads, variable surfaces and a bikepacking or mixed setup. For heavier and more structured travel, with substantial continuous load and a more expedition-oriented approach, 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, by contrast, is more stable under significant load, more touring-focused in character and better suited to long, structured travel on demanding terrain.
Can the Hook EXT also be used every day?
Yes, if daily use includes rough roads, light dirt routes or mixed terrain. It is not designed as a pure urban bike, but as a platform that remains enjoyable even outside the context of travel.
Summary
The Hook EXT Apex Eagle in Matt Black is an understated and purposeful adventure gravel bike, built to handle technical dirt roads, demanding climbs and light bikepacking with a stable and intuitive setup. The 1x12 drivetrain, 27.5” wheels and steel frame make it an essential, robust platform that is genuinely ready to work beyond the asphalt.
Specifications
Colorway 1
Matt Black
Colorway 2
Colorway 3
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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