* The colors of the products displayed in photos may vary from one screen to another depending on their calibration.

Wheel(s) DUKE SIERRA Æra W 42 / Æra 48 / DT SWISS 240 CL

From 1281 g* of all-round aero gravel performance. Sierra Æra W42 / 48 combines a Sierra Æra W42 Wide front with a Sierra Æra 48 rear to give each wheel a clear role.

At the front: precision, stability and an optimised tyre-rim transition. At the rear: sustained speed, useful inertia and efficiency on long fast sections.

Key processes & technologies:

28 mm internal width optimised for modern gravel tyres**
Æra CFD profile: signature relief reducing drag by up to 10% vs a smooth rim, with no loss of crosswind stability
Wide front profile: 43 mm external width to optimise the tyre-rim transition
SLR5: advanced lay-up of Toray T1100 carbon fibres and aerospace-grade resin
SpokeCore: moulded spoke holes (24h) for a more homogeneous structure
VFP: clearcoat-free finish, more durable and more environmentally friendly
DRC: vibration filtering for increased comfort and precision
AntiPinch: anti-pinch rim beads to help prevent tyre cuts on impacts
Hooked / Tubeless Ready: optimum safety and compatibility with modern tyres

Result:

A complete aero gravel wheelset, built for varied races, long fast sectors and real-world terrain where speed must remain compatible with control.

* Weight +/- 30 g for a wheelset built with NonPlus CL SP hubs and Sapim CX-Ray spokes.

** Optimal aero tyre width: 40 mm <> 45 mm. Compatible width: 40 mm <> 2.4" front, 36 mm <> 2.4" rear.

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€2,047.28 Tax included

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Technology

Oriented-drillings

AERA (Airflow optimization by CFD*)

- Signature aerodynamic micro-profile
- Disrupts airflow and reduces turbulence
- No deterioration in stability in crosswind conditions
* Computational fluid dynamics
SLR5 (Super Light Road series 5)

SLR5 (Super Light Road series 5)
Exclusive manufacturing process combining optimized carbon fiber layup and aerospace-grade resin
- On average 20% lighter than the SLR2 generation
- Increased resistance to lateral stresses and vertical impacts
- Better vibration filtering for increased comfort and control
Hooked

Hooked

Hooked rim design
- Optimized for road and gravel tire pressures
- Ensures secure bead retention
- Wider internal width offers aerodynamic benefits
DRC (Dynamic Response Comfort)

DRC (Dynamic Response Comfort)

Controlled vertical flex and rebound
- More dynamic handling during weight transfers and bermed corners
- Increased comfort on rough terrain
- Reduced energy loss, more speed and efficiency
SpokeCore

SpokeCore

Molded spoke holes that eliminate the need for drilling
- Preserves carbon fiber integrity
- Reinforces the structure
- Allows for precise control of vertical and lateral stiffness
- Reduced weight and increased reliability
Width

Optimized Internal Width

Maximizes tire volume and performance
- Enables lower pressures without sacrificing rolling efficiency
- Controls tire deformation for greater stability
- Improves control and comfort on all terrains
VFP (Varnish Free Process)

VFP (Varnish Free Process)

A varnish-free finish process
- Reduces VOC emissions and carbon dust during production
- More scratch-resistant surface
- Naturally glossy finish
AntiBurp

AntiBurp

Anti-burp and anti-debeading system
- Specially designed inner rim hooks lock the tire beads securely
- Eliminates air loss under heavy cornering or compression
- Prevents tire debeading, even in the event of a puncture
Anti-pinch

AntiPinch

Anti-pinch rim bead design
- Prevents tire cuts from hard impacts
- Dissipates shock energy
- Allows low-pressure riding without pinch-flat risks
Tubeless Ready

Tubeless Ready

Tubeless-compatible rim design
- Compatible with UST and Tubeless Ready standards
- Also compatible with tube-type (clincher) setups

Sapim Spokes

Sapim is THE go-to spoke brand, manufactured in Belgium since 1918. Several spoke models are available, depending on compatibility with your riding style and chosen rim:

Sapim CX-Ray: flat spoke, very light, durable, aerodynamic, and offers a very dynamic ride feel (309g / 64 pcs / 292mm)
Sapim CX-Sprint: flat spoke similar to the CX-Ray but thicker for even more stiffness (373g / 64 pcs / 292mm)
Sapim D-Light: round spoke, light and durable, with a central section diameter of 1.65mm, good value for money (344g / 64 pcs / 292mm)
Sapim Race: round spoke, strong and stiff with a central section diameter of 1.8mm (408g / 64 pcs / 292mm)

Nipples

Aluminum nipples with locking thread, available in 16 colors: black, red, silver, metallic grey, blue, aqua blue, gold, light gold, dark green, mint syrup green, lime green, lilac, pink, fuchsia pink, orange, and oil slick.