the Hook EXT C

When you want to go wild places fast.

"An ultralight carbon construction strips mass from the Hook EXT while retaining the versatility the range is known for."




  • * Full carbon frame with tapered head tube, through axles, fender mounts, stealth dropper post routing and T47 bottom bracket.
  • * New Carbon frame design features more chain ring clearance.
  • * Full carbon tapered fork with internal light cable routing, through axles and triple cage mounts.
  • * Toptube bag direct mounts, triple cage mount on downtube and seattube for optimized bottle position, bottle cage mounts underneath the downtube and rear rack mounts.
  • * Front derailleur compatible.
  • * 12 mm through axles front and rear.
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  • SPECIFICATION

    Color Glossy Dark Green
    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
    Headset Sealed integrated aheadset, 1.1/2'' - 1.1/8''
    Through axle 12 x 100 mm / 12 x 142 mm
    Seat clamp BOMBTRACK PRIME 31.8 mm
    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

  • BUILD INFO

    BB Standard T47 - 68 mm shell width
    Headset Standard (S.H.I.S.) IS42 / 28.6 | IS52 / 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 45C
    Maximum chainring clearance 1x 46 T with 45 mm chainline
    Maximum chainring clearance 2x 50 / 34 T with 43.5 mm chainline
    Seat Post Diameter 27.2 mm
    Seat clamp diameter 31.8 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 thread pitch
    Rear through axle 12 mm x 142 mm, 1.5 thread pitch
    Derailleur hanger BT-DH-013
    ISO testing standard Road

  • GEOMETRY FRAME

    Bike Size XS S M L XL
    Wheel size 27.5'' 27.5'' 27.5'' 27.5'' 27.5''
    Seat Tube Length 490 520 540 560 580
    Horizontal TT length 520 535 550 565 580
    Seat Angle 74.5° 74.0° 73.0° 73.0° 73.0°
    Head Angle 70.5° 71.0° 71.5° 72.0° 72.0°
    Headtube Length 120 140 150 170 190
    BB Drop 67 67 67 67 67
    Chainstay Length 435 435 435 435 435
    Fork Offset 48 48 48 48 48
    Trail 71 67 64 61 61
    Wheelbase Length 1018 1025 1025 1035 1050
    Standover 759 783 798 818 837
    Reach 371 375 376 384 394
    Stack 537 558 568 591 610
    Front Center 592 599 601 609 624
    Axle to Crown 398 398 398 398 398
    Minimum rider height * 1550 1630 1710 1790 1860
    Maximum rider height * 1650 1730 1810 1880 1950

    * Our bike size recommendation generally represents a rough guideline for quickly narrowing down the sizes from which to choose based on the body height. Bike fitting is a complex topic and other measurements and factors have to be accounted for as well. Since no two human bodys are exactly the same it is not possible to give a 100% correct advice for everyone. Therefore BOMBTRACK cannot guarantee for the stated recommendations to be correct for every individual customer. The best way to work out the correct size is to consult a local BOMBTRACK dealer or a professional bike fitter and have them determine the needed size.

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