HOOK EXT C
Bombtrack
Gravel
HOOK EXT C is a carbon gravel road bike (2024), by Bombtrack, from the Hook lineup. It is best suited to a wide range of riders thanks to its fit flexibility, with a balanced riding position, while being ready for gravel routes as well as pavement. Its profile is strongest in areas like good fit flexibility for dialing in rider position, all-round climbing capability rather than a narrow specialty, and a balanced ride feel between comfort and directness. At the same time, relative to category specialists, the trade-off is less emphasis on outright speed than speed-focused builds. This summary is a starting point—compare this bike on MatchBikes.com with similar bikes.
5.1
Rating

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Score Summary
Performance
3.9
Fit
6.7
Performance
Built for speed and efficiency
Speed
3.9
Very Low
Climbing Efficiency
6.0
All-Rounder
Aerodynamics
4.7
Minimal Aero
Fit
Dialed-in Fit & Comfort
Riding Position
5.3
Balanced
Fit Flexibility
8.4
Adjustable
Ride Comfort
5.9
Balanced
Value
Surface Range
Gravel ReadySpecifications
General
Brand
Bombtrack
Model
HOOK EXT C
Year
2024
Category
Road
Sub Category
Gravel
Groupset
Rival
Wheels
700c
Frame
Frame
Toray T800 carbon blend, TA, rack / fender mounts, internal hub dynamo cable routing, 85.5 mm T47 BB shell, UDH derailleur hanger, optional full internal cable routing
Suspension 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
Suspension Type
Rigid
Drivetrain
Shift Levers
SRAM Rival 1 double tap 1 x 11
Rear Derailleur
SRAM Rival 1, clutch, long cage
Front Derailleur
-
Cassette
SRAM XG-1150 11-speed, 10 - 42 T
Crank
Bombtrack Lyer forged aluminium crank, direct mount interface, (SRAM compatible),30 mm spindle
Bottom Bracket
Bombtrack T47 internal sealed BB for 30 mm spindle
Chain
KMC X11 EPT Anti Rust chain, 1/2'' x 11/128'', 114L
Wheels
Front Hub
Hunt 4 Season Gravel Disc sealed hub, centerlock disc
Rear Hub
Hunt 4 Season Gravel Disc sealed hub, centerlock disc, XD cassette body
Rims
Hunt Hunt 4 Season Gravel Disc double wall asymmetric rim, TLC, i21, 28h
Tires
Front: WTB Venture TCS Light 700C x 40C, tubeless ready, Rear: WTB Venture TCS Light 700C x 40C, tubeless ready
Brakes
Brake Type
Hydraulic Disc
Brake Description
SRAM Rival flat mount hydraulic disc brakes with 160 mm rotors
Cockpit
Stem
Bombtrack Roam forged aluminium stem, -7°
Handlebar
Seido Tackle drop bar, 31.8 mm, 16° flare
Grips
Bombtrack Escape bar tape
Seat
Saddle
Bombtrack Dart saddle
Seatpost
Seido Yew aluminium seatpost, 27.2 mm x 350 mm
Geometry
| Measurement | SM | MD | LG | XL |
|---|---|---|---|---|
| Stack Reach Ratio | 1.514 mm | 1.503 mm | 1.52 mm | 0.471 mm |
| Bottom Bracket Height | 277 mm | 277 mm | 277 mm | 190 mm |
| Front Center | 620 mm | 641 mm | 656 mm | 610 mm |
| Rake | 53 mm | 53 mm | 53 mm | mm |
| Trail | 71 mm | 71 mm | 71 mm | 48 mm |
| Stack | 577 mm | 595 mm | 614 mm | 394 mm |
| Reach | 381 mm | 396 mm | 404 mm | mm |
| Top Tube Length | 541 mm | 566 mm | 578 mm | 580 mm |
| Seat Tube Angle | 74.5 ° | 74 ° | 74 ° | 73 ° |
| Seat Tube Length | 500 mm | 530 mm | 570 mm | 580 mm |
| Head Tube Angle | 70.5 ° | 70.5 ° | 70.5 ° | 73 ° |
| Head Tube Length | 130 mm | 150 mm | 170 mm | 72 mm |
| Chainstay Length | 425 mm | 429 mm | 434 mm | mm |
| Wheelbase | 1035 mm | 1060 mm | 1080 mm | mm |
| Bottom Bracket Drop | 72 mm | 72 mm | 72 mm | mm |
| Standover Height | 793 mm | 816 mm | 845 mm | 1050 mm |
| Wheels | 700 | 700 | 700 | 650 |
| Rider Min Height | 158 cm | 168 cm | 178 cm | 186 cm |
| Rider Max Height | 171 cm | 180 cm | 189 cm | 199 cm |



























































