Hook
"The Hook might have been designed as a gravel racer, but that doesn’t stop it also being a perfect tourer, commuter, or even summer-season cross bike."
Bombtrack Hook
Naturally, our steel Hook is something special, being built from double-butted Columbus Cromor tubing, with a tapered headtube and a T47 bottom bracket. XS and S sizes feature 650B wheels, M - XL have 700C options and both run WTB tubeless rims and tires on sealed hubs. A Shimano GRX groupset with a subcompact 46 / 30T crankset, combined with an 11 – 36 T cassette helps to keep you spinning up and over the hills, and GRX 400 callipers deliver powerful braking on the descents. The frameset is bedecked with mounts for every scenario, including a top tube bag, triple cage mounts and bottle mount options, as well as internal dynamo routing on the full carbon fork.
Frame & Fork
- Color 1: Metallic black
- Color 2: Metallic red
- Color 3: Metallic teal / black fade
- Frame: Columbus Cromor double butted, TA dropout, rack / fender mounts, ED coating, 86.5 mm T47 BB shell
- Fork: Full carbon, TA, 1.1/2'' - 1.1/8'', triple cage mounts (can double as fender mounts), internal hub dynamo cable routing
Drivetrain & Shifting
- Shifter: Shimano GRX ST-RX400 STI 2 x 10
- Front derailleur: Shimano GRX FD-RX400-F
- Rear derailleur: Shimano GRX RD-RX400, clutch
- Chain: KMC X10 EPT Anti Rust chain, 1/2'' x 11/128'',
XS - S 112
L - XL 114L - Cassette: Shimano CS-HG50 10-speed, 11 - 36 T
- Crankset: Shimano GRX FC-RX600-10, 24 mm spindle
- Chainring: Shimano GRX, 46 T / 30 T
- Bottom bracket: Bombtrack T47 internal sealed BB for 24 mm spindle
Wheels & Tires
- Front hub: Bombtrack Tau sealed hub, 6-bolt disc
- Rear hub: Bombtrack Tau sealed hub, 11-speed HG body, 6-bolt disc
- Through axles: 12 x 100 mm / 12 x 142 mm
- Front rim: WTB ST i19 double wall, TCS 2.0, 32h
- Rear rim: WTB ST i19 double wall, TCS 2.0, 32h
- Front tire:
XS - S WTB Resolute 42-584
M - XL WTB Venture 40-622, tubeless ready - Rear tire:
XS - S WTB Resolute 42-584
M - XL WTB Venture 40-622, tubeless ready
Cockpit
- Handlebar: Bombtrack CX-10 drop bar, 31.8 mm, 10° flare
- Grips: Bombtrack Escape bar tape
- Stem: Bombtrack Roam forged aluminium stem, -7°
- Headset: Sealed external aheadset, 1.1/2'' - 1.1/8''
Seats & Seatpost
- Seat: Seido Comp seat
- Seat post: Bombtrack Beech 27.2 mm x 415 mm size XL; 315 mm size XS - L
- Seat clamp: Bombtrack Origin 29.8 mm
Brakes
- Brake levers: Shimano GRX ST-RX400 STI Hydraulic
- Brakes: Shimano GRX BR-RX400 hydraulic disc brakes
- Rotors: Shimano SM-RT66 160 mm rotors
Weight & Limits
- Complete weight: 11.0 kg (size M)
- Weight frame: 2420 g frame (size M, incl. TA, hanger)
- Weight fork: 600 g fork (300 mm steerer, incl. TA)
- Maximum rider weight: 120 kg incl. luggage
- ASTM riding condition: 2
Naturally, our steel Hook is something special, being built from double-butted Columbus Cromor tubing, with a tapered headtube and a T47 bottom bracket. XS and S sizes feature 650B wheels, M - XL have 700C options and both run WTB tubeless rims and tires on sealed hubs. A Shimano GRX groupset with a subcompact 46 / 30T crankset, combined with an 11 – 36 T cassette helps to keep you spinning up and over the hills, and GRX 400 callipers deliver powerful braking on the descents. The frameset is bedecked with mounts for every scenario, including a top tube bag, triple cage mounts and bottle mount options, as well as internal dynamo routing on the full carbon fork.
Frame
- BB standard: T47 - 86.5 mm shell width
- Frame max tire clearance w/o fender:
XS - S 42-584 / M - XL 42-622 - Frame front derailleur compatible: yes
- Front derailleur clamp diameter: 28.6 mm
- Brake mount rear: FM 140 / 160
- Maximum rotor clearance rear: 160 mm
- Frame thickness rear brake mount: 10 mm
- Bike trailer: approved
- Seat tube mounted child seat: approved
- ISO testing standard: Road
Fork
- Fork max tire clearance w/o fender:
52-584 / 45-622 - Fork steerer inner diameter: 23.6 mm
- Headset standard (S.H.I.S.):
EC34 / 28.6 | EC44 / 40 - Headset crown race angle: 36°
- Brake mount front: FM 140 / 160
- Maximum rotor clearance front: 160 mm
Drivetrain
- Maximum chainring clearance 1x:
40 T with 45 mm chainline - Maximum chainring clearance 2x:
48 / 32 T with 47 mm chainline - Crankarm:
XS 165 mm
S - M 170 mm
L - XL 175 mm - Q Factor: 151 mm
- BCD crank: 110 mm / 80 mm, asymmetric Shimano 4 bolts
- Chainring offset: 0 mm
- Chainline: 47 mm
Seat & Seatpost
- Seat post diameter: 27.2 mm
- Seat post offset: 24 mm
- Seat post length:
size XS - L 315 mm
size XL 415 mm - Seat clamp diameter: 29.8 mm
Cockpit
- Stem length:
XS - S 80 mm
M 90 mm
L - XL 100 mm - Stem angle: -7°
- Headset spacers: 1 x 10 mm, 2 x 5 mm
Wheels
- Spoke length front wheel:
XS - S 273, 275mm
M - XL 292 mm, 293 mm - Spoke length rear wheel:
XS - S 275, 273mm
M - XL 293 mm, 291 mm - Spoke count (front / rear): 32 / 32
- Front through axle:
12 mm x 100 mm, 1.5 thread pitch - Rear through axle:
12 mm x 142 mm, 1.5 thread pitch - ERD:
XS - S 570 mm
M - XL 604 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
Spare Parts
- Derailleur hanger: BT-DH-008
- Frame small parts: BT-CR-007
- Hub end caps front: BT-HC-014
- Hub end caps rear: BT-HC-017
- Cassette body: BT-CB-006
- Through axle front: BT-TA-F-601
- Through axle rear: BT-TA-R-602
Geometry
Frame Bag Templates
