The Bombtrack Hook EXT Ti Frameset in Titanium / Black is the endpoint of the Hook platform: a 3Al-2.5V titanium frame paired with a dedicated Seido MGV full carbon fork, designed for aggressive gravel, technical riding and off-road bikepacking. Titanium offers outstanding fatigue and corrosion resistance and, together with the carbon fork, delivers a light, responsive and remarkably comfortable chassis for long days in the saddle. This frameset is meant to be the centrepiece of serious adventure builds.
What’s included in the frameset
- Frame: 3Al-2.5V titanium, thru-axle, rack / fender mounts, SRAM UDH derailleur hanger, compatible with multiple wheel sizes (27.5'' and 700C).
- 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).
- Seat clamp: Bombtrack Prime 31.8 mm.
Use cases & configuration options
Technical gravel, singletrack & light MTB
Sharing the same intent as the steel Hook EXT but in a lighter titanium package, the Hook EXT Ti is built for demanding mixed terrain. With room for wide tyres, it’s well suited to rocky doubletrack, rooty singletrack and steep descents where many classic gravel bikes start to feel out of their depth. Independent reviews highlight how the EXT platform inspires confidence off-road and maintains composure even when the trail gets rough.
Off-road bikepacking & multi-day trips
Frame and fork are packed with mounts: triple cage on the fork, multiple bottle positions, rack and fender provision, and internal routing for dynamo lighting. Combined with the forgiving ride of titanium, this makes the Hook EXT Ti a highly capable choice for multi-day off-road trips and bikepacking routes where reliability, comfort and carrying capacity matter as much as speed.
One-bike solution for unknown routes
The Hook EXT Ti is often described as a “dream” adventure platform: 1x or 2x drivetrains, 27.5'' or 700C wheels and a wide range of setups are possible within the frame’s stated clearances. You can build it into a tough daily commuter, a long-distance gravel machine or a backcountry explorer, tuning wheels, tyres and gearing to your riding style while respecting the technical standards of the frameset.
Compatibility & build infos
- BB standard: T47 – 86.5 mm shell width.
- Headset standard (S.H.I.S.): EC34 / 28.6 (upper) | EC44 / 40 (lower).
- Crown race angle: 45°.
- 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: 31.8 mm.
- Front derailleur clamp diameter: 31.8 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, 1.5 thread pitch.
- Rear thru-axle: 12 × 142 mm, 1.0 thread pitch.
- ISO testing standard: Road.
- Bike trailer: approved.
- Seat tube mounted child seat: not approved.
- Derailleur hanger: SRAM UDH.
- Frame small parts: BT-CR-016.
- Front thru-axle: BT-TA-F-601.
- Rear thru-axle: BT-TA-R-605.
Technical specifications – frame & fork
- Model: Hook EXT Ti Frameset.
- Color offered by Bikejamming: Titanium / Black.
- Frame: 3Al-2.5V titanium, TA, rack / fender mounts, SRAM UDH derailleur hanger.
- Fork: Seido MGV full carbon, TA, 1.5" – 1 1/8" tapered steerer, fender / triple cage mounts, lowrider compatible, 180 mm max rotor, internal hub dynamo cable routing.
- Headset: sealed external aheadset, 1.5" – 1 1/8".
- Thru-axles: 12 × 100 mm front / 12 × 142 mm rear.
- Seat clamp: Bombtrack Prime 31.8 mm.
- Frameset weight: 2060 g frame (size L, incl. TA & hanger) / 550 g fork (300 mm steerer, incl. TA).
- Max rider + luggage weight: 130 kg.
- ASTM riding condition: 2.
- Final product appearance, finish and minor details may vary.
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 |
633 |
652 |
| Axle to crown |
398 |
398 |
398 |
398 |
398 |
| 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 Ti Frameset, we can help you interpret its geometry and technical standards to choose a configuration that fits your project: info@bikejamming.it.
We can help you identify compatible components and define the most suitable configuration for your build project based on the Hook EXT Ti Frameset.
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