Bombtrack HOOK EXT SX EAGLE
Bombtrack HOOK EXT SX EAGLE
Description
Built for control and confidence on any terrain, the flat bar Hook EXT SX Eagle combines rugged performance with everyday versatility. Its double-butted chromoly frame features a tapered headtube and T47 bottom bracket for durability and responsive handling. Up front, a full carbon fork with triple cage mounts and internal hub dynamo routing boosts your bikepacking potential.
The SRAM SX Eagle 12-speed drivetrain with an 11–50T cassette and 38T chainring mounted to a Rival wide chainset delivers a wide gear range while keeping an efficient road q-factor. Rolling on tubeless-ready WTB ST Light i25/i23 rims and WTB Ranger TCS Light tires, this flat bar setup gives you off-road traction with on-road agility - ready for whatever path you choose.
Features
- Frame: Columbus Cromor double-butted, T47 BB, thru-axles, rack/fender mounts, internal light cable routing
- Fork: Bombtrack EXT full carbon, 1.5"-1.125", triple cage/fender mounts, internal routing
- Handlebar: Bombtrack Trail flat bar, 31.8 mm, 9° backsweep, 4° upsweep, 7 mm rise
- Stem: Bombtrack Roam aluminium, -7°
- Grips: Bombtrack Tab 129 mm
- Headset: External aheadset, sealed, 1.5"-1.125"
- Drivetrain: SRAM SX Eagle 1x12, 38T chainring, 11–50T cassette
- Rear derailleur: SRAM SX Eagle, clutch, long cage
- Crankset: SRAM Rival Wide, DUB
- Chain: SRAM NX Eagle, 114L
- Brakes: SRAM Level hydraulic disc brakes, 160 mm rotors
- Wheels: WTB ST Light i25 (front) / i23 (rear), TCS 2.0, tubeless ready, 32h
- Hubs: Bombtrack Tau, sealed, 6-bolt disc
- Axles: 12 x 100 mm / 12 x 142 mm thru-axles
- Tires: WTB Venture TCS Light / Fast Rolling 27.5" x 2.0", tubeless ready
- Saddle: Bombtrack Comp
- Seatpost: Bombtrack Yew aluminium, 27.2 mm x 300 mm
- Seat clamp: Bombtrack Origin 29.8 mm
- Weight: 11.7 kg (size M), Frame: 2710 g, Fork: 600 g
- Maximum system weight: 130 kg incl. luggage
- ASTM riding condition: 2
Specification
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:
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: 45°
Brake mount front: FM 140 / 160
Maximum rotor clearance front: 160 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: 150 mm
BCD crank: 8 bolt direct mount (Sram compatible)
Chainring offset: 6 mm
Chainline: 47.5 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: 90 mm
Stem angle: -6°
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
Through axle front: BT-TA-F-601
Through axle rear: BT-TA-R-602
Geometry
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Bombtrack
The details that make a difference
- DE
- Originated in
- 2011
- Since
Designed with purpose
- Founded in Cologne
- Design influenced by BMX roots
- Bikes built around strength and simplicity