Bombtrack Hook Gravel Bike

The Bombtrack Hook is a steel gravel bike built around double-butted Columbus Cromor tubing, a tapered head tube and a T47 bottom bracket. Shimano's GRX 2x10 groupset pairs a subcompact 46/30T crankset with an 11-36T cassette, so long gravel climbs stay manageable, and GRX hydraulic discs handle the way back down. Size-specific wheels mean XS and S frames roll on 650B while M to XL run 700C, both on tubeless-ready WTB rims and sealed hubs. With rack, fender and triple cage mounts plus internal dynamo routing through the carbon fork, it suits New Zealand riders who want one drop-bar bike for gravel days, the commute and light touring.

Key Features

• Columbus Cromor double-butted steel frame, ED coated, 86.5 mm T47 bottom bracket
• Full carbon fork with internal hub dynamo routing and triple cage mounts
• Shimano GRX ST-RX400 2x10 shifting with a subcompact 46/30T crankset
• Shimano CS-HG50 11-36T cassette for low gearing on loose climbs
• Shimano GRX BR-RX400 hydraulic disc brakes with 160 mm rotors
• Size-specific wheels: 650B x 42C on XS-S, 700C x 40C on M-XL
• WTB ST i19 tubeless-ready rims on sealed Bombtrack Tau hubs
• Rack, fender and top tube bag mounts, 11.1 kg in size M

Who Is the Bombtrack Hook For?

This is the rider who wants one drop-bar bike to cover gravel rides, the daily commute and a loaded weekend away, rather than a dedicated race machine. The steel frame and subcompact gearing favour comfort and gear range over outright speed, and the 2x10 GRX drivetrain is simple to service and easy to live with.

On New Zealand back roads the Cromor tubing takes the sting out of corrugations and loose metal, while tubeless-ready WTB tyres give grip where the surface changes without warning. The full set of mounts means mudguards through winter or bikepacking bags for the rail trails, and the frame is rated to 120 kg rider weight including luggage.

Full Specifications