Hook EXT SX Eagle
"Columbus tubing meets SRAM SX and an EXT carbon fork, tying together the flatbar Hook EXT SX into the ultimate package of quality and versatility"
Bombtrack Hook EXT SX Eagle
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.
Frame & Fork
- Color: Matt desert green
- 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: Bombtrack EXT full carbon, TA, 1.1/2'' - 1.1/8'', fender / triple cage mounts, internal hub dynamo cable routing
Drivetrain & Shifting
- Rear derailleur: Sram SX Eagle, clutch, long cage
- Chain: Sram NX Eagle chain, 1/2'' x 11/128'', 114L
- Cassette: Sram PG-1210 Eagle 12-speed, 11 - 50 T
- Crankset: Sram Rival Wide, DUB spindle
- Chainring: Sram Rival, 12-speed, 38 T
- Bottom bracket: Sram DUB T47 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 Trail flat bar, 31.8 mm, 9° backsweep, 4° upsweep, 7 mm rise
- Grips: Bombtrack Tab 129 mm grips
- Stem: Bombtrack Roam forged aluminium stem, -7°
- Headset: Sealed external aheadset, 1.1/2'' - 1.1/8''
Seats & Seatpost
- Seat: Bombtrack Comp seat
- Seat post: Bombtrack Yew aluminium seatpost, 27.2 mm x 300 mm
- Seat clamp: Bombtrack Origin 29.8 mm
Brakes
- Brake levers: Sram Level hydraulic
- Brakes: Sram Level hydraulic disc brakes
- Rotors: Sram G2 Cleansweep 160 mm rotors
Weight & Limits
- Complete weight: 11.6 kg (size L)
- Weight frame: 2710 g frame (size L, incl. TA, hanger)
- Weight fork: 600 g fork (300 mm steerer, incl. TA)
- Maximum rider weight: 130 kg incl. Luggage
- ASTM riding condition: 2
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.
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
Frame Bag Templates
Frame Bag Templates
