Bombtrack AUDAX AL ROAD

Our Audax Aluminium Road model is for lovers of 700C wheels and 2x close ratio gearing systems. Featuring the same lightweight hydroformed frameset as the 650B version with all the same benefits and accoutrements to help you carry your kit, but now with extra zip from the 700 x 34 mm WTB Byway tyres - what they give up in volume they deliver in speed.

Shimano’s Tiagra 4700 drivetrain complete with a 50 / 34T chainset and 11 - 34T cassette helps to keep your cadence super smooth and TRP Spyre C flat mount disc brakes deliver all the stopping power you could ask for. The perfect bike for long-distance efforts against the clock.

Specification

Frame
BB standard: T47 - 86.5 mm shell width
Frame max tire clearance w/o fender:
50-584 / 35-622
Frame front derailleur compatible: yes
Front derailleur clamp diameter: integrated FD hanger
Brake mount rear: FM 140 / 160
Maximum rotor clearance rear: 160 mm
Frame thickness rear brake mount: 20 mm
Bike trailer: approved
Seat tube mounted child seat: not approved
ISO testing standard: Road

Fork
Fork max tire clearance w/o fender:
50-584 / 35-622
Fork steerer inner diameter: 23.6 mm
Headset standard (S.H.I.S.):
IS42 / 28.6 | IS52 / 40
Headset crown race angle: 36°
Brake mount front: FM 140 / 160
Maximum rotor clearance front: 160 mm

Drivetrain
Maximum chainring clearance 1x:
42 T with 45 mm chainline
Maximum chainring clearance 2x:
50 / 34 T with 43.5 mm chainline
Crankarm:
XS 165 mm
S - M 170 mm
L - XL 175 mm
Q Factor: 150 mm
BCD crank: 110 mm, asymmetric Shimano 4 bolts
Chainring offset: 0 mm
Chainline: 43.5 mm

Seat & Seatpost
Seat post diameter: 27.2 mm
Seat post offset: 24 mm
Seat post length: 350 mm
Seat clamp diameter: 31.8 mm

Cockpit
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

Wheels
Spoke count (front / rear): 32 / 32
Front through axle:
12 mm x 100 mm, 1.5 thread pitch
Rear through axle:
12 mm x 142 mm, 1.5 thread pitch
ERD: 585 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

Spare Parts
Derailleur hanger: BT-DH-018
Frame small parts: BT-CR-013
Hub end caps front: BT-HC-012
Hub end caps rear: BT-HC-017
Cassette body: BT-CB-006
Through axle front: BT-TA-F-601
Through axle rear: BT-TA-R-601

Geometry