AUDAX
The Audax, with its slender steel frame, light carbon fork, and many mounts for luggage, will let you take long-distance riding to the limit. As the kilometres roll by, hydraulic disc brakes provide reliable stopping power while a sub-compact chainset handles propulsion. A combination of WTB Horizon and Byway tyres are fast-rolling over gravel, mud, or dirt. The integrated rear light mount brings the discipline into the modern age. Topped off with Ritchey finishing kit, you’ll reach the coast before this bike gives up.
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.
HIGHLIGHTS
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WHEELS
Tubeless ready WTB STi25 650B rims with tubeless ready WTB Byway front tire and WTB Horizon rear tire.
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FRAME
Columbus Cromor frame with tapered head tube, rack and fender mounts, through axles, T47 bottom bracket and rear light mount.
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FORK
Full carbon fork with bottle cage mounts.
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HUBS
Bombtrack Tau 12 mm through axle hubs.
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CRANK
Bombtrack Lyer 30mm crank with direct mount 2x spider and 32 / 48t subcompact chainrings.
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DISC BRAKES
Shimano 105 hydraulic disc brakes with 160 mm rotors.
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DRIVETRAIN
Shimano R7020 2x11 group with Ultegra RD-RX800 clutch rear derailleur.
SPECIFICATIONS
| Model | AUDAX |
|---|---|
| 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 hub, 6-bolt disc |
| Rear hub | BOMBTRACK TAU sealed hub, 11-speed, 6-bolt disc |
| Through axle | 12 x 100 mm / 12 x 142 mm |
| Front rim | WTB ST i25 double wall, TCS 2.0, 32h |
| Rear rim | WTB ST i25 double wall, TCS 2.0, 32h |
| Saddle | BOMBTRACK DART 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 | - |
| Kickstand | - |
| 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 |
Final product may vary in appearance, finish and minor details.
BUILD INFOS
| Model | AUDAX |
|---|---|
| BB standard | T47 - 86.5 mm shell width |
| Headset standard (S.H.I.S.) | EC34 / 28.6 | EC44 / 40 |
| Headset crown race angle | 36° |
| 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 |
| Front derailleur clamp diameter | 28.6 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 |
| 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 |
| Chainring offset | small ring 0 mm / big ring -2 mm |
| Spoke length front wheel | 272 mm, 274 mm |
| Spoke length rear wheel | 274 mm, 272 mm |
| Spoke count (front / rear) | 32 / 32 |
| ERD | 570 mm |
| Front hub PCD | 58 mm |
| Rear hub PCD | 58 mm |
| Front hub flange distance / offset | 56.5 mm center to center / 6.6 mm |
| Rear hub flange distance / offset | 51 mm center to center / 8.8 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 |
| Derailleur hanger | BT-DH-008 |
| Frame small parts | BT-CR-007 |
| Hub end caps front | BT-HC-014 |
| Hub end caps rear | BT-HC-017 |
| Cassette body | BT-CB-006 |
| Crankarm bolt | BT-CRP-002 |
| Through axle front | BT-TA-F-601 |
| Through axle rear | BT-TA-R-602 |
GEOMETRY
FRAME GEOMETRY
| Model | AUDAX | ||||
|---|---|---|---|---|---|
| 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° |
| Seat Angle effective | 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 ¹ | 1500 | 1600 | 1700 | 1790 | 1880 |
| Maximum rider height ¹ | 1610 | 1710 | 1810 | 1900 | 1990 |
¹ 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.
HANDLEBAR GEOMETRY
| Model | AUDAX | ||||
|---|---|---|---|---|---|
| Bike Size | XS | S | M | L | XL |
| Handlebar type | Dropbar | Dropbar | Dropbar | Dropbar | Dropbar |
| Width (drops) | 400 | 420 | 420 | 440 | 440 |
| Width (barends) | 409 | 429 | 429 | 449 | 449 |
| Reach | 73 | 73 | 73 | 73 | 73 |
| Flare | 12° | 12° | 12° | 12° | 12° |
| Backsweep | 4.5° | 4.5° | 4.5° | 4.5° | 4.5° |
| Drop | 128 | 128 | 128 | 128 | 128 |
| Upsweep | - | - | - | - | - |
| Rise | - | - | - | - | - |
