the
Audax

using omponents selected for performance butwith the solid reliability required for endurance riding.

  • * Shown size L. Final product may vary in appearance, finish, minor details.


"Fast on tarmac, smooth over broken ground, its broad tyres contain enough air to carry you and your kit comfortably above a range of surfaces."

Introducing the Audax

A slender steel frame, light carbon fork, all the mounts you could wish for, and a high-spec Shimano groupset. The perfect companion on any number of adventures, hydraulic disc brakes and a sub-compact crankset tailor the Audax to audacious long-distance riding. Mixing WTB Horizon and Byway tyres, it’s fast-rolling, yet proficient on broken surfaces. A timeless performer, subtle tweaks like the inclusion of an integrated rear light mount for 2021 help keep it bang up to date. Topped off with a Ritchey finishing kit, it’s happy going as fast or as far as you dare push it.

 

  • * Columbus Cromor frame with tapered head tube, rack and fender mounts, through axles, T47 bottom bracket and rear light mount. 
    *
    Triple cage mount on downtube for optimized bottle position, bottle cage mounts underneath the downtube and on the seattube.
    *
    Full carbon fork with bottle cage mounts.
    * Shimano 105 R7020 2 x 11 hydraulic group with Ultegra RD-RX800 rear derailleur.
    *
    KMC X11 EPT Anti Rust Chain.
    *
    Bombtrack Lyer 30 mm crank with direct mount 2x spider and 32 / 48 T subcompact chainrings.
    * Bombtrack Tau 12 mm through axle hubs. 
    *
    Tubeless ready WTB STi25 650B rims with tubeless ready WTB Byway front tire and WTB Horizon rear tire.



"Granted, there are plenty of differences between the Audax and Hook EXT. While both are constructed from Colombus Chromor and have full carbon forks, the Audax is, in theory at least, a little snappier in the handling and climbing department – even if it feels relatively subtle in the saddle. Head angles and seat angles are tweaked too. But whilst the Audax and the EXT are clearly different bikes, there’s considerable overlap too. If you like to blend all-road riding with a penchant for forests roads and mellow trails, choosing the right bike might depend on the build kit you prefer."

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  • SPECIFICATION

    Color 1 Glossy Sage Green
    Color 2 -
    Frame COLUMBUS CROMOR double butted, TA, rack / fender mounts, internal light cable routing, rear light mount, 86.5 mm T47 BB shell
    Fork Full carbon, TA, 1.1/2'' - 1.1/8'', with fender / cage mounts
    Handlebar RITCHEY COMP STREEM III drop bar, 31.8 mm, 5° backsweep
    Grips BOMBTRACK COMMAND bar tape
    Stem RITCHEY COMP 4-AXIS 44 forged aluminium stem, -6°
    Headset Sealed external aheadset, 1.1/2'' - 1.1/8''
    Levers SHIMANO 105 ST-R7020 STI hydraulic
    Shifter SHIMANO 105 ST-R7020 STI 2 x 11
    Brakes SHIMANO 105 BR-R7070 flat-mount 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 X11 EPT Anti Rust chain, 1/2'' x 11/128'', 114L
    Chainring aluminium, subcompact, 48 / 32 T, direct mount spider
    Cassette SHIMANO 105 CS-R7000 11-speed, 11 - 34 T
    Front derailleur SHIMANO 105 FD-R7000
    Rear derailleur SHIMANO ULTEGRA RD-RX800-GS, clutch, medium cage
    Front hub BOMBTRACK TAU sealed disc hub, 12 x 100 mm thru-axle
    Rear hub BOMBTRACK TAU sealed disc hub, 11-speed, 12 x 142 mm thru-axle
    Front rim WTB ST i25 double wall, TCS 2.0, 32h
    Rear rim WTB ST i25 double wall, TCS 2.0, 32h
    Saddle BOMBTRACK COMP saddle
    Seat post RITCHEY COMP 2-BOLT aluminium seatpost 27.2 mm x 400 mm
    Seat clamp BOMBTRACK ORIGIN forged aluminium seat clamp, 29.8 mm
    Front tire WTB BYWAY TCS 650B x 47C, tubeless ready
    Rear tire WTB HORIZON TCS 650B x 47C , tubeless ready
    Fender -
    Rack -
    Light -
    Weight 10.8 kg (size M)
    Weight frameset 2410 g frame (size M, incl. TA, hanger)
    530 g fork (300 mm steerer, incl. TA)
    Maximum rider weight 120 kg incl. luggage
    ASTM riding condition 2
  • BUILD INFO

    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 650B x 50C / 700C x 35C
    Frame Max Tire Clearance w/o fender 650B x 47C / 700C x 35C
    Maximum chainring clearance 1x 44 T with 45 mm chainline
    Maximum chainring clearance 2x 53 / 39 T with 43.5 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 165 mm / S - 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 570 mm
    Front hub PCD 58 mm
    Rear hub PCD 58 mm
    Stem Length XS - S 80 mm / M 90 mm / L - XL 100 mm
    Stem angle -6°
    Headset Spacers 1 x 10 mm, 2 x 5 mm
    Seat post offset 25 mm
    Seat post length 400 mm
  • GEOMETRY FRAME

    Bike Size XS S M L XL
    Wheel size 650B 650B 650B 650B 650B
    Seat Tube Length 470 490 520 550 580
    Horizontal TT length 504 519 544 566 593
    Seat Angle 74.5° 74.5° 74.0° 74.0° 73.5°
    Head Angle 71.5° 71.5° 72.0° 72.0° 72.0°
    Headtube Length 105 125 145 170 195
    BB Drop 68 68 68 65 65
    Chainstay Length 420 420 420 420 420
    Fork Offset 53 53 53 53 53
    Trail 59 59 56 56 56
    Wheelbase Length 987 1005 1018 1037 1055
    Standover 746 765 793 818 841
    Reach 361 373 384 396 408
    Stack 534 553 574 590 609
    Front Center 577 595 607 626 643
    Axle to Crown 385 385 385 385 385
    Minimum rider height * 1500 1600 1700 1790 1880
    Maximum rider height * 1610 1710 1810 1900 1990

    * 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.

  • GEOMETRY HANDLEBAR

    Bike Size XS S M L XL
    Handlebar type Dropbar Dropbar Dropbar Dropbar Dropbar
    Width (drops) 400 420 420 440 440
    Width (barends) 446 466 466 486 486
    Reach 75 75 75 75 75
    Flare 10° 10° 10° 10° 10°
    Backsweep - - - - -
    Drop 116 116 116 116 116
    Upsweep - - - - -
    Rise - - - - -
     

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