Bombtrack Hook EXT


Free shipping on bicycles priced over $1500 (within the lower 48).

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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.


Are you heading down the path least travelled? For a drop handlebar bike, the Hook EXT seldom faces terrain it cannot handle. A Columbus steel frame, a dedicated carbon fork and a sturdy 27.5’’ wheelset equip the EXT with an armoury to ride where other bikes would surely suffer.

A Sram 1×11 Rival groupset suitably gives this machine the gears and brakes to match.


Columbus Cromor double butted frame with through-axle, rack and fender mounts, internal cable routing for lights, and an 85.5 mm T47 bottom bracket shell.

Full carbon Seido MGV fork with through-axle, mounts for fenders and triple cages, compatible with 180 mm rotors, lowrider racks, and internal hub dynamo routing.

Sram Rival 1 hydraulic levers for 1 x 11 speed shifting.

Sram Rival hydraulic disc brakes with flat mount installation.



  • Bombtrack Lyer forged aluminum, direct mount, Sram compatible, 30 mm spindle

Bottom Bracket:

  • Bombtrack T47, internal sealed, for 30 mm spindle, 85.5 mm width


  • Sram PG-1130, 11-speed, 11 – 42 T

Rear Derailleur:

  • Sram Rival 1, clutch, long cage


  • Seido Tau sealed, 11-speed, 6-bolt disc


  • WTB ST Light i25, double wall, TCS 2.0, 32h


  • WTB Ranger TCS Light / Fast Rolling, 27.5” x 2.0”, tubeless ready


  • 11.2 kg


All Bombtrack bicycles are backed by warranty against defects in material and manufacturing.

Please see Bombtrack’s Warranty Page to review their limitations.