the Hook EXT-C

Taking the concept of our original Hook EXT into a light weight carbon package without sacrificing the versatility

"...a brand-new model for 2018 the Hook EXT-C builds on the success of the original model but in a full carbon fiber format."

Introducing the Hook EXT-C

As a brand-new model for 2018 the Hook EXT-C builds on the success of the original model but in a full carbon fiber format. As with any Bombtrack the EXT-C is built to be versatile, allowing you the option for sticking on the smooth stuff or heading well off the beaten track. With any new model we are always keen to test each aspect of the bikes design and build to the fullest, in the case of the EXT-C the proving ground was the HT550 in the Scottish Highlands, possibly the toughest terrain a gravel bike is likely to ever encounter.

The frame features an optimised chainstay profile and seat tube scoop, designed to allow for larger tires (27.5 x 2.2" / 700 x 52c) and a shorter rear end for more agile handling. This solid and reliable SRAM Rival-1 drivetrain in combination with the Hunt Adventure wheelset ensure the Hook keeps going when the going gets tough.

Highlights

Toray T600/T800 high modulus carbon fiber construction for optimised weight and strength in critical areas.

Frame features x3 bottle cages and integrated rack / fender mounts.

Tire clearance for up to 700c x 52c / 27.5" x 2.2"

Straight blade extra wide full carbon fork with triple cage mounts.

Hunt Adventure Sport disc wheelset, with double butted spokes and asymmetric rims.

  • FRAMESET

    WHEEL SIZE

    650b

    COLOR 1

    Matt Metallic Black

    FRAME

    TORAY "T700/T800" Hi-Mod carbon, TA dropout, repl. hanger, rack & fender mounts

    FORK

    BT BIKES "EXT" full carbon, TA disc fork, 1.1/8"-1.1/2" tapered, with triple cage mounts

    HEADSET

    FSA "No.42/48" sealed integrated, a-headset, 1.1/8"-1.1/2"

    WEIGHT

    9.4kg (size M)

  • FINISHING KIT

    BARS

    BT BIKES "CX-10" 6061-T6 butted alloy, 10° flared drop bar

    GRIPS BT BIKES "PRO" shock-proof bar tape
    STEM

    BT BIKES "Vector" forged alloy stem, -7°

    SADDLE

    SELLE SAN MARCO "Squadra-Startup" saddle

    SEAT POST

    BT BIKES "620" alloy seatpost

    SEAT CLAMP

    BT BIKES "Origin" forged alloy seat clamp

  • DRIVETRAIN

    CRANKSET

    SRAM "Rival-1"

    BB

    SRAM PF 30

    LEVERS

    SRAM "Rival-1"

    SHIFTER

    SRAM "Rival-1"

    PEDALS

    not included

    CHAIN

    KMC "X11EL-1"

    CHAINRING

    SRAM "X-Sync" alloy, 40T

    CASSETTE

    SRAM "PG-1130" 11-speed cassette, 11-42T

    DERAILLEUR

    SRAM "Rival-1"

  • WHEELS & BRAKES

    FRONT HUB

    HUNT "Adventure Sport" sealed hub, 6-bolt disc, 12x100mm Thru-axle

    REAR HUB

    HUNT "Adventure Sport" sealed hub, 11-speed, 6-bolt disc, 12x142mm Thru-axle

    FRONT RIM

    HUNT "Adventure Sport" double wall asymmetric rim, TLC, i20, 28h

    REAR RIM

    HUNT "Adventure Sport" double wall asymmetric rim, TLC, i20, 28h

    TIRES

    WTB "Nano" 27.5" x 2.1" Race folding

    BRAKES

    SRAM "Rival" flat mount hydraulic with 160mm F / 140mm R rotors

  • COMPONENT SIZE

      XXS XS S M L XL XXL
    Stem 90 90 100 110 110 120 120
    Seat Post 300L
    Crankarm 165 165 170 170 172.5 175 175
    Seat Post Diameter 27.2
    Handlebar Width 400 400 420 420 420 440 440
    Bar Reach 75
    Bar sweep/flair 10°
    Bar Drop 116
  • GEOMETRY

      XXS XS S M L XL XXL
    TT 510 525 535 545 560 575 595
    ST (°) 75 75 74 73 73 73 73
    HT 110 120 140 150 170 190 210
    HT (°) 71 71 71 72 72 72 72
    ST 460 490 520 540 560 580 610
    BB Drop 69 69 67 67 67 65 65
    CS 435 435 435 435 435 435 435
    R 48 48 48 48 48 48 48
    T 71 71 68 64 61 61 61
    WB 1008 1024 1027 1021 1032 1042 1063
    SO 746 765 790 804 824 844 868
    Reach 363 376 375 371 380 384 398
    Stack 528 538 557 568 589 606 625
  • EXTRA INFO

    Max. tire width front

    650B x 54C

    700C x 52C

    Max. tire width rear

    650B x 54C

    700C x 52C

Find a dealer near you

if you'd like to see this bike in the flesh or perhaps go for a test ride, click below to find a dealer near you.

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