AURA 40

AURA 40

3 699 €

Type

Type

Hubs

Hubs

(+700 €)

French excellence, absolute performance and reliability: from 247g

Exceptionnal durability, simplified maintenance and optimal efficiency : 323gr

Bearings

Bearings

(+100 €)
(+260 €)

Groupset

Groupset

10/11/12 VITESSES

12 VITESSES

12 VITESSES

11/12 VITESSES

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Absolute Excellence

Boasting an exceptional dynamic range, the AURA 40 triumphs across all terrains, from rolling hills to rapid sprints.
Cutting-edge technologies enable unprecedented lightness with unmatched reliability.
Built with dual-core composite rims, innovative titanium-carbon hybrid spokes filtering low-frequency vibrations, and RAR ESO UL+ hubs, its seamless fluidity transforms every effort into pure mastery.

Your pair of RAR wheels comes with :

  • Padded wheel bags
  • Pre-installed rim tape for tubetypes and tubeless tires
  • Tubeless valves
  • Warranty certificate

Tech. specifications

Rim depth

40mm

External width

28mm

Internal width

21mm

Set weight - RAR ESO UL hubs (±15gr)

1050 tubetype/tubeless, 900 tubular

Set weight - RAR FIRST hubs (±15gr)
Warranty

5 years, Lifetime Warranty Upon Registration

Max. system weight (cyclist+bike)

90kg, Contact us if you exceed this limit or want custom ultra-stiff wheels. We’ll optimize composite and spoke setup to your needs.

ASTM Classification

Category 1 – road use

ETRTO (diam x width)

622×21

Get in Touch with Us

HOOKED RIMS

Optimal tire retention
Effortless tubeless or inner tube mounting

asymetrie

RIM ASYMETRY

Improved spoke tension balance
Enhanced endurance and dynamic qualities

Equilibrage

DYNAMIC BALANCE

Ensures bike stability and smoothness at high speeds

DUAL CORE RIMS

Weight saving
Maximal reliability

M46J CARBON FIBERS

Very high modulus fiber
Reinforces key zones for optimal lightness and stiffness.

Carbon fiber + Titanium spokes

Ultimate lightness
Vibration dampening effect

  • RAR AURA: Revolutionary Innovation

    Innovation Beyond Limits

    Marking two decades of excellence, RAR unveils AURA, an ultra-lightweight wheel that redefines power transfer with exclusive high-modulus carbon-titanium hybrid spokes, 300% stronger than the finest stainless steel.

    This groundbreaking construction drastically reduces weight, amplifies efficiency, and maximises comfort by filtering vibrations.

    Available in tubular or clincher-tubeless versions, with a 24mm profile for agile climbing, a 40mm profile for versatile circuits, and a 52mm profile for aerodynamic speed on rolling courses, AURA propels competitors to absolute performance.

    True to its pioneering spirit, RAR opens new horizons for bold enthusiasts.

    Mastery of Exceptional Materials

    At the core of AURA lies a technological breakthrough: slender hybrid spokes, weighing just 2g each, with optimised titanium-carbon bonding for unmatched stiffness and aerodynamics.

    ESO V2 UL+ hubs, crafted from aerospace-grade 7075T6 alloy and refined through finite element analysis for asymmetric machining, weigh only 78g front and 178g rear.

    Dual-core M46J composite rims structure the walls with high-modulus fibres, minimising deflections for superior force feedback.

    Internal balancing and a traditional hooked design ensure fluidity and safety.

    AURA transcends the ordinary, delivering enduring excellence.

    Cutting-Edge French Craftsmanship

    Handcrafted in Maubeuge with exclusive artisanal expertise, AURA combines composite mastery, precise machining, and advanced material bonding for extraordinary reliability.

    Produced in limited batches on order, each wheel bears a micro-engraved mark attesting to its elite status, with full traceability and a robust warranty.

    From epic climbs to demanding circuits, AURA fuses French tradition with cutting-edge technology, offering elite riders a cycling experience of absolute precision and refinement.

  • Hubset

    RAR ESO UL

    The ESO UL+ version, specifically engineered for carbon/titanium hybrid spokes, enhances tensile strength. Machined from the finest 7075T6 aerospace-grade aluminium alloy, finite element analysis has enabled additional asymmetric machining to significantly reduce weight.

    • Front: 78g
    • Rear: 168g (+35g XDR full steel body)
    Learn more

  • Bearings

    SKF

    Standard on RAR ESO hubs, SKF bearings, manufactured in Japan or Italy, feature a polymer cage and double rubber seal for optimal smoothness after a brief break-in period, minimizing friction for lasting efficiency. For competitors seeking precision, SKF bearings provide the perfect balance of durability and performance.

    • Ideal Use: Competition – ROAD / MTB / GRAVEL
    • Maintenance: None
    • Endurance: Standard
    • Friction Torque (6902 at 15°C): 0.55 cN.m

    Cycling Ceramic

    Available as an option across the RAR range, Cycling Ceramic bearings are assembled in France with ultra-hard ceramic balls, steel races, and low-friction rubber seals, delivering instant responsiveness from the first rotation. Periodic lubrication maximizes their longevity. For performance enthusiasts, these artisanal French bearings transform every pedal stroke into an experience of pure, fluid precision.

    • Ideal Use: Competition – ROAD / MTB / GRAVEL
    • Maintenance: Lubrication every 2,000 to 5,000 km
    • Endurance: Standard
    • Friction Torque (6902 at 15°C): 0.30 cN.m

  • AURA versions

     

    ROAD DISC BRAKE RIM SPEC. 24  40 52
    Height:

    Internal width

    Weight tubular:

    Weight tubeless & tubetype:

    Holes:

    Asymetrical offset:

    		 24mm

    21mm

    220g

    300g

    24

    2mm

    		 40mm

    21mm

    280g

    340g

    24

    2mm

    		 52mm

    22mm

    –

    360g

    24

    2mm

     

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