Bombtrack Hook Gravel Bike (Glossy Metallic Blue) (XS)

Bombtrack Hook Gravel Bike (Glossy Metallic Blue) (XS)
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Some riders may live for long days out on the open road, however there are also those that know true joy comes where the pavement ends. The Bombtrack hook is designed for weekend adventurers and racers alike, with a durable steel frame and carbon fiber fork that boost speed and versatility. Integrated rack & fender mounts precisely located over the frame, provide riders with storage solutions for longer adventures or bikepacking. Throw your leg over this beauty, but beware, we almost guarantee you'll be hook-d on it.

*Note: Due to progressive wheel sizing, sizes XS & S feature 650B wheels while sizes M, L & XL feature 700C wheels. 


  • Columbus Cromor double butted frame construction with integrated rear light mount
  • Full carbon tapered fork with triple cage mounts and internally routed dynamo hub compatible
  • Shimano GRX RX400 groupset provides a wide range of gearing
  • Bombtrack Lyer alloy forged crankset with direct mount chainring interface
  • Flat mount hydraulic brakes provide consistent and powerful braking performance
  • Top tube bag mounts, triple cage mounts on downtube and seat tube, cage mounts under the downtube, and rear rack/fender mounts

Frame: Columbus Cromor Double Butted Tubing w/ Rack & Fender Mounts
Fork: Full Carbon w/ Triple Cage Mounts
Handlebar: Bombtrack CX-10 Drop Bar (31.8mm) (10° Flare)
Grips/Tape: Bombtrack Command Tape
Stem: Bombtrack Roam Forged Aluminum (-7°)
Headset: Sealed External Aheadset (1-1/2" - 1-1/8")
Levers: Shimano GRX RX400 STI (Hydro) 
Shifter: Shimano GRX RX400 STI (2 x 10sp)
Brakes: Shimano GRX RX400 Hydraulic Disc (160mm)
Crankset: Bombtrack Lyer Forged Aluminum (Direct Mount) (30mm Spindle) 
BB: Bombtrack T47 (Sealed) 
Pedals: -
Chain: KMC X10 (114 Links)
Chainring: Aluminum Direct Mount (48/32T)
Cassette: Shimano HG50 (11-36T)
Front Derailleur: Shimano GRX RX400
Rear Derailleur: Shimano GRX RX400 (Clutch) (10 Speed)
Front Hub: Bombtrack TAU (6-Bolt) (12 x 100mm)
Rear Hub: Bombtrack TAU (6-Bolt) (12 x 142mm) (11sp)
Rims: WTB ST i19 (Double Wall) (32H)
Saddle: Bombtrack Comp Saddle
Seatpost: Bombtrack Beech (27.2mm) (300mm)
Seat Clamp: Bombtrack Orgin (29.8mm)
Front Tire: WTB Resolute (650b x 42mm) or WTB Venture (700c x 40mm)
Rear Tire: WTB Resolute (650b x 42mm) or WTB Venture (700c x 40mm)

*Note: These bikes are fully built by our expert bike builders, then partially disassembled as needed for shipping. Bikes will arrive to you with some basic assembly still required. 

This product was added to our catalog on June 29, 2022

Sizing Recommendations for Riders Who Fall Between Sizes:

  • Sizing down will provide a more maneuverable ride while sizing up will provide more stability
Rider Height (Feet)Rider Height (CM)
XS4'11" - 5'3"150 - 161cm
S5'3" - 5'7"160 - 171cm
M5'7" - 5'11"170 - 181cm
L5'10" - 6'3"179 - 190cm
XL6'2" - 6'6"188 - 199cm

Note: All sizing recommendations are provided by the manufacturer and may differ for each rider.



Wheel Size650B650B700C700C700C
Seat Tube Length460.0mm490.0mm525.0mm545.0mm565.0mm
Horizontal TT Length508.0mm522.0mm540.0mm562.0mm579.0mm
Seat Tube Angle74.0°74.0°74.0°73.5°73.5°
Head Tube Angle71.0°71.5°72.0°72.0°72.0°
Head Tube Length100.0mm110.0mm130.0mm150.0mm170.0mm
BB Drop57.0mm57.0mm67.0mm67.0mm67.0mm
Chainstay Length410.0mm410.0mm425.0mm425.0mm425.0mm
Fork Offset48.0mm48.0mm48.0mm48.0mm48.0mm
Wheelbase Length975.0mm985.0mm1010.0mm1027.0mm1045.0mm
Standover Height731.0mm751.0mm802.0mm820.0mm840.0mm
Front Center572.0mm582.0mm594.0mm611.0mm629.0mm
Axle to Crown395.0mm395.0mm395.0mm395.0mm395.0mm


Handlebar TypeDropbarDropbarDropbarDropbarDropbar
Width (Drops)400mm400mm420mm440mm440mm
Width (Bar Ends)446mm446mm466mm486mm486mm

Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired.