Bombtrack Hook EXT Apex Eagle – Off-Road Gravel & Bikepacking

Data sheet

Telaio MTB	Gravel / Bikepacking Ready
Ruota	27.5''

More info

Intro

This version distils the EXT philosophy into something quiet but powerful: a bike that performs exceptionally without drawing attention to itself. The SRAM Apex Eagle 1×12 drivetrain delivers a wide, intuitive range for steep climbs, loaded touring and long mixed-terrain rides. With 27.5” wheels, traction and control are significantly improved on rough or loose surfaces.

If you want an adventure bike that prioritises substance over flair — and that feels composed, capable and confident across varied terrain — the Matt Black EXT is an excellent choice. We're always available to help you compare sizes or understand how it fits your riding style.

The Hook EXT Apex Eagle in Matt Black is the most understated and purposeful interpretation of the model. A clean, functional aesthetic that lets the bike disappear beneath you so you can focus entirely on the ride. The matte finish highlights the steel frame’s lines and conveys durability, precision and a tool-like sense of reliability.

Why It’s a Hook EXT

More stable than the standard Hook
More agile than the Beyond series
Optimised for 27.5” wheels and technical terrain
Predictable, confident handling
Geometry designed for control and long-ride comfort

Key Highlights

SRAM Apex Eagle 1×12 wide-range drivetrain
27.5” tubeless-ready wheelset
Full-carbon adventure fork
Steel frame with generous mounting options
Balanced geometry for long-distance mixed-terrain riding

Short Description

A strong, highly capable adventure gravel bike built for technical terrain, multi-day touring and demanding gravel routes.

Ideal For

Technical gravel and rugged surfaces
Steep climbs and loose terrain
Bikepacking and off-road touring
All-season, mixed-terrain riding

Technical Summary

Steel frame
Full-carbon adventure fork
SRAM Apex Eagle 1×12 drivetrain
Hydraulic disc brakes
27.5” tubeless-ready wheels
Full set of mounting points

Tyre Clearance (Official Bombtrack)

Frame – max (no fenders)

650B × 52C
700C × 40C

Fork – max (no fenders)

650B × 57C
700C × 57C

Technical Interpretation

The Hook EXT 2025 supports advanced tyre configurations thanks to its asymmetric frame–fork clearances:

Key limits

Frame: 52 mm max in 27.5” • 40 mm in 700C
Fork: up to 57 mm in both formats

Advanced configurations unlocked

1) Mullet Width Setup

Wider front, narrower rear
More control, stability and grip on technical terrain
Ideal for roots, rough gravel and fast descents

2) Front Traction Bias

Wide front tyre → traction and confidence
Slightly narrower rear → faster rolling, zero frame rub
Perfect for technical bikepacking with varied surfaces

This asymmetrical clearance is one of the Hook EXT’s major advantages over many competing gravel bikes.

Rider Fit

XS 150–161 cm
S 160–171 cm
M 170–181 cm
L 179–190 cm
XL 188–199 cm

Send height + inseam for accurate sizing.

Recommended Setups

Frame + saddle + handlebar bags for lightweight touring
Wider front tyre for technical control
Compatible with front and rear racks
Excellent base for dynamo-equipped setups

Why Choose Matt Black

A timeless, understated finish that works with any setup — from minimalist commuting to full adventure rig. Elegant, neutral and versatile: ideal for riders who want performance without visual impact.

Press Impressions

“Stable, predictable and ready for demanding gravel.”
“Eagle gearing unlocks serious versatility for long climbs.”
“A bike built for exploration without limits.”

Why Buy From Us

Tracked EU shipping
Bilingual customer support
Expert, honest pre-purchase guidance
Replies within 24 hours

Final CTA

Ready to explore with quiet confidence?
Add the Hook EXT Apex Eagle 2025 – Matt Black to your cart.

Want to talk first? info@bikejamming.it

Technical Tables

SPECS

Color 1	Matt Black
Color 2	Matt Teal
Color 3	Metallic sunglow fade
Frame	Columbus Cromor double butted, TA, rack / fender mounts, internal light cable routing, rear light mount, ED coated, 85.5 mm T47 BB shell
Fork	Seido MGV full carbon, TA, 1.1/2'' - 1.1/8'', fender / triple cage mounts, 180 mm max rotor size, lowrider rack compatible, internal hub dynamo cable routing
Handlebar	Seido Tackle drop bar, 31.8 mm, 16° flare
Grips	Bombtrack Escape bar tape
Stem	Seido Meander forged aluminium stem, -6°
Headset	Seido Pro EC sealed external headset, 1.1/2'' - 1.1/8''
Levers	Sram Apex Eagle double tap hydraulic
Shifter	Sram Apex Eagle double tap 1x12
Brakes	Sram Apex flat mount hydraulic disc brakes
Rotor	Sram Centerline 180 mm front and 160 mm rear rotor
Crankset	Sram Apex Wide, DUB spindle
BB	Seido T47 Pro 85.5 mm for 30 mm spindle
Pedals	-
Chain	Sram Apex, flattop, 1/2'' x 11/128'', 112L
Chainring	Sram Apex, 12-speed, 40 T
Cassette	Sram NX Eagle PG-1230 12-speed, 11 - 50 T
Front derailleur	-
Rear derailleur	Sram Apex Eagle, clutch, long cage
Front hub	Seido Tau sealed hub, 6-bolt disc
Rear hub	Seido Tau sealed hub, HG driver, 6-bolt disc
Through axle	12 x 100 mm / 12 x 142 mm
Front rim	Seido Sinus i25 double wall asymmetric, tubeless ready, 32h
Rear rim	Seido Sinus i25 double wall asymmetric, tubeless ready, 32h
Saddle	Seido Comp saddle
Seat post	Seido Yew aluminium seatpost, 27.2 mm x 350 mm
Seat clamp	Bombtrack Prime 29.8 mm
Front tire	WTB Ranger TCS Light / Fast Rolling 27.5'' x 2.0'', tubeless ready
Rear tire	WTB Ranger TCS Light / Fast Rolling 27.5'' x 2.0'', tubeless ready
Fender	-
Rack	-
Kickstand	-
Light	-
Weight	11.7 kg (size M)
Weight frameset	2710 g frame (size L, incl. TA, hanger) / 550 g fork (300 mm steerer, incl. TA)
Maximum rider weight	130 kg incl. Luggage
ASTM riding condition	2

Final product may vary in appearance, finish and minor details.

BUILD INFOS

  BB standardT47 - 85.5 mm shell width
Headset standard (S.H.I.S.)EC34 / 28.6 | EC44 / 40
Headset crown race angle45°
Fork steerer inner diameter23.6 mm
Fork max tire clearance w/o fender650B x 57C / 700C x 57C
Frame max tire clearance w/o fender650B x 52C / 700C x 40C
Maximum chainring clearance 1x44 T with 45 mm chainline
Maximum chainring clearance 2x50 / 36 T with 45 mm chainline
Seat post diameter27.2 mm
Seat clamp diameter29.8 mm
Front derailleur clamp diameter28.6 mm
Frame front derailleur compatibleyes
Brake mount frontFM 160 / 180
Brake mount rearFM 140 / 160
Frame thickness rear brake mount10 mm
Maximum rotor clearance front180 mm
Maximum rotor clearance rear160 mm
Front through axle12 mm x 100 mm, 1.5 thread pitch
Rear through axle12 mm x 142 mm, 1.5 thread pitch
ISO testing standardRoad
CrankarmXS 165 mm / S - M 170 mm / L - XL 175 mm
Q Factor152 mm
BCD crankDirect mount (Sram compatible)
Chainring offset6 mm
Chainline47.5 mm
Spoke length front wheeltba
Spoke length rear wheeltba
Spoke count (front / rear)32 / 32
ERD551 mm
Front hub PCD58 mm
Rear hub PCD58 mm
Front hub flange distance / offset56.5 mm center to center / 6.6 mm
Rear hub flange distance / offset51 mm center to center / 8.8 mm
Stem lengthXS - S 80 mm / M - 90 mm / L - XL 100 mm
Stem angle-6°
Headset spacers1 x 10 mm, 2 x 5 mm
Seat post offset0 mm
Seat post length350 mm
Bike trailerapproved
Seat tube mounted child seatapproved
Derailleur hangerBT-DH-008
Frame small partsBT-CR-007 / BT-CR-006
Hub end caps frontBT-HC-014
Hub end caps rearBT-HC-017
Cassette bodyBT-CB-006
Crankarm boltBT-CRP-002
Through axle frontBT-TA-F-601
Through axle rearBT-TA-R-602
GEOMETRY

BB standard	T47 - 85.5 mm shell width
Headset standard (S.H.I.S.)	EC34 / 28.6 \| EC44 / 40
Headset crown race angle	45°
Fork steerer inner diameter	23.6 mm
Fork max tire clearance w/o fender	650B x 57C / 700C x 57C
Frame max tire clearance w/o fender	650B x 52C / 700C x 40C
Maximum chainring clearance 1x	44 T with 45 mm chainline
Maximum chainring clearance 2x	50 / 36 T with 45 mm chainline
Seat post diameter	27.2 mm
Seat clamp diameter	29.8 mm
Front derailleur clamp diameter	28.6 mm
Frame front derailleur compatible	yes
Brake mount front	FM 160 / 180
Brake mount rear	FM 140 / 160
Frame thickness rear brake mount	10 mm
Maximum rotor clearance front	180 mm
Maximum rotor clearance rear	160 mm
Front through axle	12 mm x 100 mm, 1.5 thread pitch
Rear through axle	12 mm x 142 mm, 1.5 thread pitch
ISO testing standard	Road
Crankarm	XS 165 mm / S - M 170 mm / L - XL 175 mm
Q Factor	152 mm
BCD crank	Direct mount (Sram compatible)
Chainring offset	6 mm
Chainline	47.5 mm
Spoke length front wheel	tba
Spoke length rear wheel	tba
Spoke count (front / rear)	32 / 32
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 x 10 mm, 2 x 5 mm
Seat post offset	0 mm
Seat post length	350 mm
Bike trailer	approved
Seat tube mounted child seat	approved
Derailleur hanger	BT-DH-008
Frame small parts	BT-CR-007 / BT-CR-006
Hub end caps front	BT-HC-014
Hub end caps rear	BT-HC-017
Cassette body	BT-CB-006
Crankarm bolt	BT-CRP-002
Through axle front	BT-TA-F-601
Through axle rear	BT-TA-R-602

Bike Size	XS	S	M	L	XL
Wheel size	27.5''	27.5''	27.5''	27.5''	27.5''
Seat Tube Length	460	500	530	570	600
Horizontal TT length	520	534	558	572	597
Seat Angle	73.9°	73.9°	73.5°	73.5°	73.0°
Head Angle	70.9°	70.9°	71.5°	71.5°	71.5°
Headtube Length	110	130	150	170	190
BB Drop	71	71	66	66	66
Chainstay Length	425	425	425	425	425
Fork Offset	53	53	53	53	53
Trail	64	64	61	60	60
Wheelbase Length	1003	1018	1034	1049	1068
Standover	753	782	805	834	857
Reach	360	369	381	390	403
Stack	558	577	593	612	631
Front Center	588	603	618	632	652
Axle to Crown	410	410	410	410	410
Minimum rider height ¹	1500	1600	1700	1790	1880
Maximum rider height ¹	1610	1710	1810	1900	1990

¹ Size recommendations generally represent a rough guideline for quickly narrowing down the sizes from which to choose based on the body height. Bike fitting is a complex topic and other measurements and factors have to be accounted for as well. Since no two human bodys are exactly the same it is not possible to give a 100% correct advice for everyone. The best way to work out the correct size is to consult your Bombtrack dealer (info@bikejamming.it) or a professional bike fitter and have them determine the needed size.

Reviews (0)

Only registered users can post a new review.

No reviews at that time.

Name	Provider	What it does	Expiry	Allow (Check all)
Shopping cart	bikejamming.it	This provides, and keeps the products inside your shopping cart. Deactivating this cookie would stop permitting the orders. This cookie doesn't save any personal Data about any shop client. This provides, and keeps the products inside your shopping cart. Deactivating this cookie would stop permitting the orders. This cookie doesn't save any personal Data about any shop client.	20 days	Allow
Paypal	Bikejamming.it	Used in the context of the PayPal payment function on the website. A cookie is required to make a secure transaction via PayPal. Used in the context of the PayPal payment function on the website. A cookie is required to make a secure transaction via PayPal.	Permanent	Allow

Adventure Touring

BOMBTRACK Hook EXT Apex Eagle - Matt Black

Gravel Adventure