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Bombtrack Hook Ext - 650B Cross/Gravel/Roadbike - 2021 - matt black/grey

Bombtrack Hook Ext - 650B Cross/Gravel/Roadbike - 2021 - matt black/grey


Pushing the limits of what you can tackle.

Using a Columbus steel frame, dedicated carbon fork, and lively 27.5-inch wheels, the EXT can batter through territory out-of-bounds to other drop handlebar bikes.

Backed by SRAM’s 1x11 Rival groupset, this provides both the gearing range and braking power needed for extreme riding. Adding more build options, this year sees the addition of an integrated rear light mount. 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.

Features of Bombtrack Hook Ext:

  • 650B wheels
  • Columbus Cromor double butted steel frame
  • Tire clearance fork: 650B x 52C / 700C x 45C
  • Tire clearance frame: 650B x 52C / 700C x 40C
  • Full carbon tapered fork with triple cage mounts and internal hub dynamo cable routing
  • Rack, bag and fender mounts
  • Rear light mount
  • Internal light cable routing
  • Tubeless ready


Fact Sheet of Bombtrack Hook Ext - 650B Cross/Gravel/Roadbike - 2021 - matt black/grey

Product Name: Bombtrack Hook Ext - 650B Cross/Gravel/Roadbike - 2021 - matt black/grey
Manufacturer: Bombtrack
Item Code: BMT527508
activity: Bike
gender: men
material: Steel
usage bikesport: Gravel, Allroad / Gravel Road
hubs: Bombtrack TAU, 12x100mm / 12x142mm
rims: WTB ST Light i25 double wall, TCS 2.0, 32h
chain: KMC X11 EPT
cassette: SRAM PG-1130
shifter: SRAM Rival 1 double tap
rear derailleur: SRAM Rival 1, clutch, long cage, 11-speed
bottom bracket: Bombtrack T47 internal sealed BB for 30mm spindle
chainring ratio: 40
crank arm length: 165, 170, 175
crankset: Bombtrack Lyer, direct mount interface (SRAM compatible), 30mm spindle
brakes: SRAM Rival, Flat Mount hydraulic disc, 160/160mm
seat post: Bombtrack Yew, 27.2mm x 300mm
saddle: Bombtrack Comp
bar tape: Bombtrack Escape
handle bar: Bombtrack CX-10, 31.8mm, 10° flare
stem: Bombtrack ROAM, forged aluminium, -7°
fork: Full carbon, TA, 1.1/2'' - 1.1/8'', fender / triple cage mounts, internal hub dynamo cable routing
headset: Sealed external aheadset, 1.1/2'' - 1.1/8''
frame: Columbus Cromor double butted crmo, TA dropout, rack / fender mounts
groupset: SRAM
gear ratio: 11-42
number of chainrings: 1
shifting system: 11-speed
shifting actuation: Mechanical
brake type: Disc Brake
wheel size: 27,5" / 650B (584mm)
ASTM: Category 2
tires: WTB Ranger TCS Light / Fast Rolling 27.5" x 2.0", tubeless ready
Model year: 2022
Season: Full year
Color: Black, Grey
weight: 11200g
cable routing: external
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