Endurance
Titanium 3Al2.5V

AUDAX takes its name from the Latin for “bold” and “resolute.”

True to its name, it is built for endurance events and ultra-distance riding, accompanying you over hundreds of kilometers with a consistently stable, smooth, and confident ride. Titanium’s distinctive resilience and toughness help absorb road vibrations, reduce fatigue on long rides, and improve pedaling efficiency, leaving you with more energy for every mile that matters.

For RIKULAU, AUDAX is more than a bicycle. It embodies the courage to keep moving into the unknown, because the true finish line often lies beyond the next bend.

The AUDAX 3Al-2.5V Ti uses tubing of the same quality as RIKULAU’s flagship MASTER series. Without the custom frame service and elaborate paint finishes, it offers outstanding practicality and value.
Tubing: double-butted 3Al-2.5V titanium, heat-treated after forming to
relieve residual stresses.

44 mm straight head tube: the standard configuration uses a 1-1/2-inch fork to increase stiffness
and cornering stability.

If needed, a compatible headset also allows
a 1-1/4-inch fork to be fitted.
Standard threaded bottom bracket: simplifies maintenance on long-distance rides.

Rack mounts: mounting points on the seatstays accommodate a rack for long-distance riding.
The AUDAX series is designed primarily for long-distance road riding.

Alongside essential stiffness and stability, its comfort, standard threaded bottom bracket, and rack mounts are all designed around the practical demands of long-distance riding.

XXS XS S M L XL XXL
Reach 349 357 366 373.9 384 393.2 402
Stack 523 536 547 554.8 577 592 611
Seat Tube 425 450 490 520 550 570 590
Effective Top Tube 503 515 528 543.5 561 574 588
Head Tube 115 125 135 150 165 180 200
Head Tube Angle 70 71 71.5 72 72 72 72
Seat Tube Angle 73.5 73.5 73.5 73 73 73 73
Bottom Bracket Drop 68 68 68 68 68 68 68
Chain Stay 415 415 415 415 415 415 415
Wheel Base 969 973 981 989 1004 1018 1033
Standover 719 737 762 784 805 821 840
Front Center 564 567 576 584 599 612 627
Rake 43 43 43 43 43 43 43

Frame Material
3Al-2.5V double-butted titanium tubing
Bike Category
Endurance
Fork
CGF27 carbon fiber fork with internal and external cable routing
Headset
FSA No.13 / 12B / 44 / ICR
Head Tube Specification
1 1/2", external cup
Bottom Bracket
T47 68mm
Rear Dropout
UDH
Brake Mount
Flat Mount
Cable Routing
Electronic shifting: fully internal cable routing / Mechanical shifting: external cable routing
Seatstay Rack Mounts
Yes
Standard Tire Size
700×32C
Maximum Tire Clearance
35C
Wheelset
DT Swiss ER 1400 Dicut
Tires
MAXXIS Refuse 700×32C
Thru-axles
Front 12×100 mm / Rear 12×142 mm
Drivetrain (Mechanical Shifting)
Shimano 105 R7120
Drivetrain (Electronic Shifting)
Shimano 105 Di2 R7170
Gearing
50-34T/11-34T
Brake Calipers
Shimano BR-R7170
Disc Rotors
Center Lock, 160 / 160 mm
Stem
Vision SMR
Handlebar
FSA Gossamer Compact
Bar Tape
3 mm PU bar tape (black)
Seatpost
FSA Energy SB20・27.2 mm
Seatpost Clamp
CNC-machined aluminum
Saddle
Novus Boost Evo Superflow
Pedals
Not included

Titanium Fork
Road: 700×32C / Gravel: 700×45C, fully internal cable routing
Titanium Stem
Compatible with fully internal cable routing
Titanium Seatpost
27.2×350 mm,offset 25 mm
Titanium Crankset
Q-Factor 148 mm
Titanium Clamp
Replaces the standard CNC-machined aluminum seatpost clamp
BLK TEC Carbon Fiber Seatpost
S6
BLK TEC Integrated Carbon Fiber Handlebar
R8 / G8 / L8 (R8 also available with a bike computer mount)
Carbon Fiber Bottle Cage
-
For available frame finish options (sandblasting, brushing, anodizing, laser engraving, and custom signatures) and geometry customization, please see the customization guide.

Frame Warranty
Lifetime
Component Warranty
One year for non-wear components