BOMBTRACK HOOK EXT Columbus Frameset Metallic Grey/Blue

The Hook’s hoodlum tendencies given free rein. Using a Columbus steel frame, dedicated carbon fork, and lively 27.5-inch wheels, the EXT can batter through territory out-of-bounds to other drop handlebar bikes. 

Adding more build options, this year sees the addition of an integrated rear light mount. 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.

• Columbus Cromor double butted frame with rear light mount
• Full carbon tapered fork with internal light cable routing, through axles and triple cage mounts
• Frame COLUMBUS CROMOR double butted tubing, TA, rack / fender mounts, internal light cable routing, rear light mount, 
• Fork Full carbon, TA, 1.1/2'' - 1.1/8'', triple cage mounts (can double as fender mounts), internal hub dynamo cable routing
• Headset Sealed external aheadset, 1.1/2'' - 1.1/8'' included
• Through axle 12 x 100 mm / 12 x 142 mm
• Weight frameset 2710 g frame (size L, incl. TA, hanger)
• 600 g fork (300 mm steerer, incl. TA)
• Maximum rider weight 130 kg incl. Luggage
• Color: Matt Metallic Grey Blue

​Frame Specifications:

• BB Standard: T47 I.B (internal bearing) - 86.5 mm shell width
• Headset Standard (S.H.I.S.): EC34 / 28.6 | EC44 / 40
• Fork Max Tire Clearance w/o fender: 650B x 52C / 700C x 45C
• Frame Max Tire Clearance w/o fender: 650B x 52C / 700C x 40C
• Maximum chainring clearance: 1x 44 T with 45 mm chainline
• Maximum chainring clearance: 2x 50 / 36 T with 45 mm chainline
• Seat Post Diameter: 27.2 mm
• Seat clamp diameter: 29.8 mm
• Brake mount front/rear: FM
• Maximum rotor clearance front/rear: 160 mm
• Maximum rotor clearance rear: 160 mm
• Front through axle: 12 mm x 100 mm, 1.5 thread pitch
• Rear through axle: 12 mm x 142 mm, 1.5 thread pitch
• Derailleur hanger:  BT-DH-008
• Suggested Crankarm Length: XS 165 mm / S - M 170 mm / L - XL 175 mm
• Q Factor: 152 mm
• Chainline: 45 mm​

Sizing Guide:

• XSmall = 1.50 to 1.61m
• Small = 1.60 to 1.71m
• Medium = 1.70 to 1.81m
• Large = 1.79 to 1.90m
• XLarge = 1.88 to 1.99m