M Available in 3 months
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The Hook might have been designed as a gravel racer, but that doesn’t stop it also being a perfect tourer, commuter, or even summer-season cross bike.

A capable steel frame, light carbon fork, and mid-width 700C tyres render the Hook fast and versatile. Fitted with Shimano’s latest GRX groupset, a double crankset provides close-ratios but a wide range. Letting you keep the tempo high on gravel or unpaved roads, it can be loaded up in an infinite number of ways. Dotted with fixing points, including direct mounts for a top tube bag, triple cage mounts, plus rack and fender mounts, it’s happy to carry whatever you need. Alternatively, leave it stripped-back and free to fly. New for 2021, size-matched 650B or 700C wheels now standardise the bike’s geometry across all sizes.


  •  Size XS and S will come with 650B wheels to ensure proper fit without any compromises in geometry.
  •  Columbus Cromor double butted frame with 86.5 mm wide T47 bottom bracket to increase tire clearance.
  •  Full carbon tapered fork with triple cage mounts.
  •  Hydraulic Shimano GRX 400 2 x10 groupset.
  •  KMC X10 EPT Anti Rust Chain.
  •  Bombtrack Tau 12 mm through axle hubs.
  •  Toptube bag direct mounts, triple cage mount ondown tube and seattube for optimized bottle position, bottle cage mounts underneath the downtube and rear rack mounts.


Dettagli Tecnici

Color 1 Glossy Metallic Blue
Color 2 -
Frame COLUMBUS CROMOR double butted, TA dropout,rack / fender mounts, 86.5 mm T47 BB shell
Fork Full carbon, TA, 1.1/2'' - 1.1/8'', fender / triple cage mounts
Handlebar BOMBTRACK CX-10 drop bar, 31.8 mm, 10° flare
Stem BOMBTRACK ROAM forged aluminium stem, -7°
Headset Sealed external aheadset, 1.1/2'' - 1.1/8''
Levers SHIMANO GRX ST-RX400 STI Hydraulic
Shifter SHIMANO GRX ST-RX400 STI 2 x 10
Brakes SHIMANO GRX BR-RX400 hydraulic disc brakes with 160 mm rotors
Crankset BOMBTRACK LYER forged aluminium crank, direct mount interface(SRAM compatible), 30 mm spindle
BB BOMBTRACK T47 internal sealed BB for 30 mm spindle
Pedals -
Chain KMC X10 EPT Anti Rust chain, 1/2'' x 11/128'', XS - S 112L, M - XL 114L
Chainring aluminium, subcompact, 48 / 32 T, direct mount spider
Cassette SHIMANO CS-HG50 10-speed, 11 - 36 T
Front derailleur SHIMANO GRX FD-RX400
Rear derailleur SHIMANO GRX RD-RX400, clutch
Front hub BOMBTRACK TAU sealed disc hub, 6-bolt disc
Rear hub BOMBTRACK TAU sealed disc hub, 11-speed, 6-bolt disc
Through axle 12 x 100 mm / 12 x 142 mm
Front rim WTB ST i19 double wall, TCS 2.0, 32h
Rear rim WTB ST i19 double wall, TCS 2.0, 32h
Saddle BOMBTRACK COMP saddle
Seat post BOMBTRACK BEECH 27.2 mm x 300 mm
Seat clamp BOMBTRACK ORIGIN 29.8 mm
Front tire XS - S 650B WTB RESOLUTE 42-584
M - XL 700C WTB VENTURE 40-622, tubeless ready
Rear tire XS - S 650B WTB RESOLUTE 42-584
M - XL 700C WTB VENTURE 40-622, tubeless ready
Fender -
Rack -
Light -
Weight 11.0 kg (size M)
Weight frameset 2420 g frame (size M, incl. TA, hanger)
600 g fork (300 mm steerer, incl. TA)
Maximum rider weight 120 kg incl. luggage
ASTM riding condition 2

BB Standard T47 - 86.5 mm shell width
Headset Standard (S.H.I.S.) EC34 / 28.6 | EC44 / 40
Fork Max Tire Clearance w/o fender XS - S 650B x 52C / M - XL 700C x 45C
Frame Max Tire Clearance w/o fender XS - S 650B x 42C / M - XL 700C x 42C
Maximum chainring clearance 1x 40 T with 45 mm chainline
Maximum chainring clearance 2x 48 / 32 T with 46.9 mm chainline
Seat Post Diameter 27.2 mm
Seat clamp diameter 29.8 mm
Brake mount front FM
Brake mount rear FM
Maximum rotor clearance front 160 mm
Maximum rotor clearance rear 160 mm
Front through axle 12 mm x 100 mm, 1.5 TPI
Rear through axle 12 mm x 142 mm, 1.5 TPI
Derailleur hanger BT-DH-008
ISO testing standard Road
Crankarm XS - S 165 mm / M 170 mm / L - XL 175 mm
Q Factor 152 mm
BCD crank 104 mm (Sram direct mount compatible spider), 4 bolts
Chainline 45 mm
Spoke length front wheel tba
Spoke length rear wheel tba
Spoke count (front / rear) 32 / 32
ERD XS - S 570 mm / M - XL 604 mm
Front hub PCD 58 mm
Rear hub PCD 58 mm
Front hub flange distance / offset 56.5 mm center to center / 6.6 mm
Rear hub flange distance / offset 51 mm center to center / 8.8 mm
Stem Length XS - S 80 mm / M 90 mm / L - XL 100 mm
Stem angle -7°
Headset Spacers 1 x 10 mm, 2 x 5 mm
Seat post offset 24 mm
Seat post length 300 mm


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