The Bombtrack Hook EXT-C frameset is built for professional gravel, adventure, and endurance bike builds.
Made from Toray T800 carbon, it delivers a lightweight yet durable platform with precise handling and excellent vibration damping – perfect for mixed-terrain performance.

This frameset includes rack and fender mounts, internal hub dynamo cable routing, and an 85.5 mm T47 bottom bracket shell, offering both strength and modern serviceability.
The Seido MGV full carbon fork supports lowrider racks, triple cage mounts, and 180 mm rotors, making the EXT-C ideal for fully equipped adventure setups.

Technical Specifications

• Frame Material: Toray T800 carbon blend

• Frame Features: Boost TA, rack & fender mounts, internal hub dynamo cable routing, optional full internal cable routing

• Bottom Bracket: T47, 85.5 mm shell width

• Derailleur Hanger: UDH (Universal Derailleur Hanger)

• Fork: Seido MGV full carbon, TA, 1.1/2"–1.1/8" tapered steerer

• Fork Mounts: Fender, triple cage, lowrider rack compatible

• Brake Mount (fork): Flat mount, max rotor size 180 mm

• Headset: Sealed integrated, 1.1/2"–1.1/2"

• Through Axles: 12×100 mm (front) / 12×142 mm (rear)

• Seat Clamp: Bombtrack Prime 31.8 mm

• Rack: Not included (mounts provided)

• Weight (frameset): 1380 g (frame, size M incl. axle & hanger) / 550 g (fork, incl. axle, 300 mm steerer)

• Maximum Rider Weight: 115 kg (incl. luggage)

• ASTM Classification: Category 2 (Gravel / Endurance / Touring)