BOMBTRACK Hook EXT Frameset - Metallic Sunglow Fade

BOMBTRACK Hook EXT Frameset – Adventure Off-Road Gravel

Name: BOMBTRACK Hook EXT Frameset – Adventure Off-Road Gravel
Brand: Bombtrack
SKU: 30834
Price: 1296 EUR
Availability: InStock

€1,296.00

Tax included

Adventure / off-road gravel frameset for technical gravel, light bikepacking and MTB-light riding. Columbus Cromor steel frame, Seido MGV carbon fork and generous tyre clearance make it a capable platform for rough-terrain builds.

Planning a complete build? We can help with cockpit, wheels and components.

→ Custom bike configuration

Looking for a different size or variant?
Contact us: info@bikejamming.it

🌍 International shipping available. If your country is not available at checkout, contact us for availability and shipping options.

Taglia: S

✅ Available — 📦 Estimated delivery in Italy: 5–10 business days

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Bombtrack Hook EXT Frameset

The Bombtrack Hook EXT Frameset in Metallic Sunglow Fade is a steel adventure gravel platform designed for demanding terrain. A Columbus Cromor double-butted frame, dedicated Seido MGV full carbon fork and 27.5" wheels combine to carry wide tyres, gear and speed over rough tracks, singletrack and unpredictable routes where many classic gravel bikes reach their limits.

The platform is designed around 27.5" wheels, while also accommodating 700C wheelsets with rear tire clearance up to 40 mm.

What’s included in the frameset

Frame	Columbus Cromor double-butted steel, TA, rack/fender mounts, internal light cable routing, rear light mount, 85.5 mm T47 bottom bracket shell.
Fork	Seido MGV full carbon, TA, 1.5" – 1 1/8" tapered steerer, fender / triple cage mounts, lowrider rack compatible, 180 mm max rotor size, internal hub dynamo cable routing.
Headset	sealed external aheadset, 1.5" – 1 1/8".
Thru-axles	12 × 100 mm front / 12 × 142 mm rear (included).
Seat clamp	Bombtrack Prime 29.8 mm (included).

Use cases & configuration options

Aggressive gravel & singletrack

The geometry, 27.5" wheels and high-volume tires provide greater control and comfort over rough gravel, uneven terrain and non-technical singletrack than a traditional gravel bike.

Off-road bikepacking & adventure touring

Multiple mounting points on the frame and fork accommodate a wide range of bikepacking and touring setups, including bags, cargo cages and compatible racks. Both 1x and 2x drivetrains are possible within the declared clearances, so you can prioritise simplicity or a wider gear range depending on terrain and load.

One-bike solution for unknown terrain

If you want a single frameset to cover everything from tough commuting to remote backcountry rides, the Hook EXT is designed to shine when the route is unknown. By tuning wheels, tyres and drivetrain within the frame’s standards, you can build a very capable mixed-terrain bike.

Compatibility & build infos

Item	Specification
BB standard	T47 – 85.5 mm shell width.
Headset standard (S.H.I.S.)	EC34 / 28.6 (upper) \| EC44 / 40 (lower).

Fork steerer I.D.	23.6 mm.
Fork max tyre clearance (without fenders)	650B × 57C / 700C × 57C.
Frame max tyre clearance (without fenders)	650B × 52C / 700C × 40C.
Max chainring 1x	44 T with 45 mm chainline.
Max chainring 2x	50 / 36 T with 45 mm chainline.
Seatpost diameter	27.2 mm.
Seat clamp diameter	29.8 mm.
Front derailleur clamp diameter	28.6 mm.
Front derailleur compatible	yes.
Brake mount front	FM 160 / 180.
Brake mount rear	FM 140 / 160.
Max rotor front	180 mm.
Max rotor rear	160 mm.
Front thru-axle	12 × 100 mm.
Rear thru-axle	12 × 142 mm.
ISO testing standard	Road.
Bike trailer	approved.
Seat tube mounted child seat	approved.
Derailleur hanger	BT-DH-008.
Frame small parts	BT-CR-007 / BT-CR-006.
Front thru-axle	BT-TA-F-601.
Rear thru-axle	BT-TA-R-602.

Technical specifications – frame & fork

Specification	Details
Frame	Double-butted Columbus Cromor CrMo, ED coating
Fork	Seido MGV full carbon, tapered 1 1/8"–1 1/2" steerer
Suspension fork compatibility	Not specified
Rigid fork length	410 mm axle-to-crown
Fork offset	53 mm
Bottom bracket	Threaded T47, 85.5 mm shell width
Headset	Seido Pro sealed headset, EC34/28.6 upper / EC44/40 lower
Thru-axles	12 × 100 mm front · 12 × 142 mm rear
Seatpost	27.2 mm
Dropper post compatibility	Not specified
Brake mount	Flat Mount
Front rotor size	160–180 mm
Rear rotor size	140–160 mm
Drivetrain compatibility	1x or 2x
Maximum chainring (1x)	44T with 45 mm chainline
Maximum chainring (2x)	50/36T with 45 mm chainline
Front derailleur	Compatible, 28.6 mm clamp
Designed wheel size	27.5"
Frame tire clearance	650B × 52 mm · 700C × 40 mm
Fork tire clearance	650B × 57 mm · 700C × 57 mm
Frame mounts	Rack and fender mounts, internal light cable routing, rear light mount
Fork mounts	Three-Pack mounts, low-rider rack mounts, fender mounts and internal dynamo cable routing
Frame weight	2,710 g (size L), including thru-axle and derailleur hanger
Fork weight	550 g with 300 mm steerer, including thru-axle
Maximum system weight	130 kg, including rider and luggage
Usage classification	ASTM Category 2 · ISO Road
Trailer compatibility	Approved
Seat tube child seat	Approved

Geometry & size guide

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
Min rider height	150 cm	160 cm	170 cm	179 cm	188 cm
Max rider height	161 cm	171 cm	181 cm	190 cm	199 cm

Size recommendations are indicative and based on rider height only. If you are planning a build around the Hook EXT Frameset, we can help you interpret its geometry and technical standards to choose a configuration that fits your project: info@bikejamming.it.