Bicycle Bombtrack HOOK EXT C 2021


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Bicycle Bombtrack HOOK EXT C 2021. Our carbon fibre Hook EXT C gets a new frame and fork. Along with tweaks to the geometry, we’ve added our full-carbon EXT V2 fork with triple cage mounts. Also coming with an updated build-kit, Sram now provides the bike’s XD cassette to impart a huge 10 – 42 T gear range. Taking care of the hoops, our friends at Hunt send over the tubeless-ready Adventure Sport 27.5-inch wheelset. Finished with great-looking tan-wall WTB Venture tyres, this agile adventure bike is the perfect companion for technical backcountry raids.


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  • Full carbon frame with the tapered head tube, through axles, fender mounts, stealth dropper post routing and T47 bottom bracket.
  • New Carbon frame design for more chainring clearance.
  • Full carbon tapered fork with internal light cable routing, through axles and triple cage mounts.
  • Now with SRAM XG-1150 10 – 42 T cassette for wider 1x gear range.
  • Bombtrack Lyer 30 mm alloy crank with 38 T direct mount chainring.
  • Hydraulic Sram Rival 1 x 11 groupset and brakes.
  • Tubeless-ready Hunt Adventure Sport 27.5’’ wheelset with tubeless-ready WTB Venture 27.5’’ x 2.0’’ tires.
  • KMC X11 EPT Anti Rust chain.
  • Toptube bag direct mounts, triple cage mount on downtube and seat tube for optimized bottle position, bottle cage mounts underneath the down tube and rear rack mounts.


Color 1 Glossy Dark Green
Color 2
Frame TORAY T700 / T800 Hi-Mod carbon, TA, rack / fender mounts, 68 mm T47 BB shell
Fork Full carbon, TA, 1.1/2” – 1.1/8”, triple cage mounts (can double as fender mounts), internal hub dynamo cable routing
Handlebar BOMBTRACK CX-10 drop bar, 31.8 mm, 10° flare
Stem BOMBTRACK ROAM forged aluminium stem, -7°
Headset Sealed integrated aheadset, 1.1/2” – 1.1/8”
Levers SRAM RIVAL 1 double tap hydraulic
Shifter SRAM RIVAL 1 double tap 1 x 11
Brakes SRAM RIVAL flat mount hydraulic disc brakes with 160 rotors
Crankset BOMBTRACK LYER forged aluminium crank, direct mount interface(SRAM compatible), 30 mm spindle
BB BOMBTRACK T47 external sealed BB for 30 mm spindle
Chain KMC X11 EPT Anti Rust chain, 1/2” x 11/128”, 114L
Chainring CNC machined aluminium, narrow-wide, 38 T
Cassette SRAM XG-1150 11-speed, 10 – 42 T
Front derailleur
Rear derailleur SRAM RIVAL 1, clutch, long cage
Front hub HUNT ADVENTURE SPORT sealed hub, centerlock disc
Rear hub HUNT ADVENTURE SPORT sealed hub, 11-speed, centerlock disc, XD cassette body
Through axle 12 x 100 mm / 12 x 142 mm
Front rim HUNT ADVENTURE SPORT double wall asymmetric rim, TLC, i20, 28h
Rear rim HUNT ADVENTURE SPORT double wall asymmetric rim, TLC, i20, 28h
Saddle BOMBTRACK COMP saddle
Seat post BOMBTRACK YEW 27.2 mm x 300 mm
Seat clamp BOMBTRACK PRIME 31.8 mm
Front tire WTB VENTURE TCS LIGHT 27.5” x 2.0”, tubeless ready
Rear tire WTB VENTURE TCS LIGHT 27.5” x 2.0”, tubeless ready
Weight 9.4 kg (size M)
Weight frameset 1260 frame (size M, incl. TA, hanger, cable guides)
600 g fork (300 mm steerer, incl. TA)
Maximum rider weight 115 kg incl. luggage
ASTM riding condition 2

Manufacturer website



BOMBTRACK is a bicycle brand from Cologne, Germany. BOMBTRACK's product range now includes everything from urban bikes, cyclocross designs, road race machines, travel bikes and everything in between. BOMBTRACK's design stands for clear lines and the love for steel, without denying alloy or carbon models. Carefully picked polished parts suit the extraordinary frame designs perfectly. BOMBTRACK creates new classics.
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