Bombtrack - 2019 Hook EXT - Steel - Frameset

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Screen Shot 2018-11-03 at 4.44.42 pm.png
Screen Shot 2018-11-03 at 4.44.53 pm.png

Bombtrack - 2019 Hook EXT - Steel - Frameset


The Bombtrack Hook extended is built on a 27.5” rim and using a wider tire produces a wheel with the same outer diameter as a typical 700x28c. This means it’s possible to run bigger knobby mountain bike tires, with all the grip they offer, yet retain the geometry of a CX/gravel bike, something gravel racers have long dreamed of. This is made possible thanks to a specially designed frame that utilizes a wider bottom bracket and yoke to maintain a wide yet short rear end. The Columbus Cromor double-butted tubing has the perfect blend of being lightweight yet durable, perfect for gravel riding. For 2019 the EXT features a new full carbon fork, with anything cage and fender mounts, creating more options for front end luggage. Additional frame features added for 2019 include the invest cast chain stay yoke, dropper post compatibility and direct mounts for top tube bag.

The EXT, which is reassuring on steeper technical descents. The versatile build is designed to offer as much all-round use as possible, so if your journey is mainly on-road, swap out the wheels for a set of 700c’s, with anything up to 45c tire.


  • Frame: Columbus Cromor Tubing ( inc headset )

  • Fork: Bombtrack full Carbon CX-plus Disc Fork with triple cage mounts

  • Bottom bracket: T47 - Not included

recommend build list

  • Brake / Lever: SRAM Rival CX1 flat mount

  • Crankset: FSA Gossamer 40T

  • Cassette: SRAM pc1130 - 11spd cassette 11-42

  • Stem / Handlebars: Bombtrack Alloy Stem / CX Bars

  • Saddle / Seatpost: Bombtrack Saddle / Bombtrack Seatpost

  • Wheelset: BT BIKES CL disc hubs / WTB STS 32H 650b Rims

  • Tyres: WTB Nano race 27.5 x 2.1

  • Weight: 11.1kg (size M)

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