Hook EXT Rival
"As capable on backcountry campouts as it is on post-work blasts, the Hook EXT remains the choice when you’re unsure of the terrain, but know you want to have fun riding it."
Bombtrack Hook EXT Rival
Our EXT is where the Hook really starts to lead you astray. Utilising Columbus Cromor double-butted steel tubing, a tapered headtube, internal routing for dynamo lighting, and with our signature number of frame mounts, the EXT is ready for anything. Rolling on aggressive 27.5 x 2.0’’ WTB Ranger tyres, this is one very capable and exciting bike when you turn off the tarmac and head onto the trail. Sram’s hydraulic Rival 1x groupset provides both the transmission and the braking duties, featuring an 11 – 42T cassette paired with a 40T direct mount chainring and Rival rear mech. Additionally, we fitted a Seido MGV carbon fork offering triple cage and low rider mounts, internal dynamo cable routing, as well as huge clearance for muddy high volume tyres. Turn off the gravel and head into the backcountry for some true wilderness adventure riding.
Frame & Fork
- Color 1: Matt black
- Color 2: Matt teal
- Frame: Columbus Cromor double butted, TA, rack / fender mounts, internal light cable routing, rear light mount, ED coating, 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
Drivetrain & Shifting
- Rear derailleur: Sram Rival 1, clutch, long cage
- Chain: KMC X11 EPT Anti Rust chain, 1/2'' x 11/128'', 112L
- Cassette: Sram PG-1130 11-speed, 11 - 42 T
- Crankset: Bombtrack Lyer forged aluminium crank, direct mount interface (Sram compatible), 30 mm spindle
- Chainring: CNC machined aluminium, narrow-wide, 40 T
- Bottom bracket: Bombtrack T47 internal sealed BB for 30 mm spindle, 85.5 mm
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 Light i25 double wall, TCS 2.0, 32h
- Rear rim: WTB ST Light i23 double wall, TCS 2.0, 32h
- 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
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: Bombtrack Dart seat
- Seat post: Bombtrack Yew aluminium seatpost, 27.2 mm x 300 mm
- Seat clamp: Bombtrack Origin 29.8 mm
Brakes
- Brake levers: Sram Rival 1 double tap hydraulic
- Brakes: Sram Rival flat mount hydraulic disc brakes
- Rotors: Sram Centerline 180 mm front and 160 mm rear rotor
Weight & Limits
- Complete weight: 11.2 kg (size M)
- Weight frame: 2710 g frame (size L, incl. TA, hanger)
- Weight fork: 550 g fork (300 mm steerer, incl. TA)
- Maximum rider weight: 130 kg incl. Luggage
- ASTM riding condition: 2
Our EXT is where the Hook really starts to lead you astray. Utilising Columbus Cromor double-butted steel tubing, a tapered headtube, internal routing for dynamo lighting, and with our signature number of frame mounts, the EXT is ready for anything. Rolling on aggressive 27.5 x 2.0’’ WTB Ranger tyres, this is one very capable and exciting bike when you turn off the tarmac and head onto the trail. Sram’s hydraulic Rival 1x groupset provides both the transmission and the braking duties, featuring an 11 – 42T cassette paired with a 40T direct mount chainring and Rival rear mech. Additionally, we fitted a Seido MGV carbon fork offering triple cage and low rider mounts, internal dynamo cable routing, as well as huge clearance for muddy high volume tyres. Turn off the gravel and head into the backcountry for some true wilderness adventure riding.
Frame
- BB standard: T47 - 85.5 mm shell width
- Frame max tire clearance w/o fender:
52-584 / 40-622 - 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:
57-584 / 57-622 - Fork steerer inner diameter: 23.6 mm
- Headset standard (S.H.I.S.):
EC34 / 28.6 | EC44 / 40 - Headset crown race angle: 45°
- Brake mount front: FM 160 / 180
- Maximum rotor clearance front: 180 mm
Drivetrain
- Maximum chainring clearance 1x:
44 T with 45 mm chainline - Maximum chainring clearance 2x:
50 / 36 T with 45 mm chainline - Crankarm:
XS 165 mm
S - M 170 mm
L - XL 175 mm - Q Factor: 152 mm
- BCD crank: 3 bolt direct mount (Sram compatible)
- Chainring offset: 6 mm
- Chainline: 46 mm
Seat & Seatpost
- Seat post diameter: 27.2 mm
- Seat post offset: 0 mm
- Seat post length: 300 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: 274 mm, 275 mm
- Spoke length rear wheel: 273 mm, 275 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: 570 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 / 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
Geometry
Frame Bag Templates
