the Hook EXT

...takes 'road-plus' further off the beaten track and sets the benchmark for a steel gravel bike.

"CX/gravel geometry with clearance for bigger knobby mountain bike tires, something gravel racers have long dreamed of."

Introducing the Hook EXT

Smaller wheels, bigger tyres, rowdier personality. The burly Hook EXT is made for the most extreme drop bar adventures. A classic case of "if it ain't broke – don't fix it!". Besides adding a wider, more durable T47 bottom bracket we've revised the cable routing to keep the bike looking clean with any combination of derailleurs and dropper posts. Besides this, the bike retains the same gorgeous matt metallic grey paint scheme and awesome parts list that’s made it a pin-up for many gravel nerds. Additional frame features include the invest cast chain stay yoke, dropper post compatibility and direct mounts for top tube 'fule tank' bag. This versatile frame is designed to offer as much all-round use as possible, so if your journey is mainly on-road, swap out the wheels for a set of 700c’s, with clearance for anything up to 45c tires.


Frame uses Bombtrack casted drive-side yoke, extra cage mount under down tube, direct mount top tube ‘fuel’ bag and stealth dropper post routing.

Columbus Cromor, double butted front triangle chosen for its lightweight yet durable properties ideal for CX and gravel rides.

Straight blade extra wide full carbon fork with triple cage mounts and 12mm thru-axle.

Clearance for 27.5 x 2.1" or 700 x 45c.


    COLOR 1: Matt Metallic Grey
    FRAME: Columbus Cromor double butted tubing,
    FORK: TORAY "T700/T800" Hi-Mod carbon TA disc fork, 1.1/8"-1.1/2" tapered, triple cage mounts

    FSA "No21/12/44" sealed a-headset, 1.1/8"-1.1/2"

    EC34 / 28.6 | EC44 / 40

    BB: FSA 386EVO T47 BB for T47 x 86 mm 
    SEAT CLAMP: BT Bikes "Origin" Forged alloy
    WEIGHT: Frame 2545g (size M), Fork 505g (un-cut), H/set 100g

    CABLE ROUTING: external, hydraulic brake compatible
    BAND-ON DIAMETER: 28.6mm
    DROPOUT: invest casted 12mm thru-axle, flat mount disc, with repl. hanager
    EXTRA INFO: integ. fender and rear rack mounts, TT and under DT cage mounts, stealth dropper post compatible, invest casted chainstay yoke, fork with triple cage mounts
    C/RING CLEARANCE: 50 / 36T

    Front: 650B x 52C /700C x 45C

    Rear: 650B x 52C / 700C x 40C

    BRAKE TYPE: Flat mount disc F/R



    Bike Size S M L XL
    Seat Tube Length (C-T, mm) 510 540 570 600
    Horizontal TT length (mm) 541 559 575 592
    Seat Angle (°) 72,5 72,5 72,5 72,5
    Head Angle (°) 70,25 71 72 72,5
    Headtube Length (mm) 110 130 150 170
    BB Drop (mm) 70 70 70 70
    Chainstay Length (mm) 425 425 425 425
    Fork Offset (mm) 48 48 48 48
    Trail (mm) 72 67 61 58
    Wheelbase Length (mm) 1010 1021 1028 1039
    Standover (mm, center tt - ground) 792 818 843 868
    Reach (mm) 371 380 390 400
    Stack (mm) 542 565 587 608

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