Asymmetric Carbon 29er MTB Rim – 23mm High, 30mm Inner Width, 300–380g (XC / All-Mountain)

Why Choose an Asymmetric Carbon 29er Rim for Your MTB?

This hooked asymmetric carbon rim is designed for 29-inch mountain bike wheels used in cross-country (XC) racing and all-mountain (AM) riding. The 30mm inner width supports modern high-volume tyres (2.2–2.6 in) at pressures between 45 and 65 psi, while the 23mm profile keeps rotational weight low without sacrificing lateral stiffness. Available in three weight tiers: Standard (380 ± 15 g), Superlight (330 ± 10 g), and Ultralight (300 ± 10 g) per rim.

Key Specifications

Design Tradeoffs to Know Before You Buy

• 23mm rim height vs. deeper profiles: A shallower 23mm section reduces aerodynamic drag penalty in technical terrain and saves 30–60 g versus 30–35mm profiles. It is not optimised for road-style speed riding.
• 30mm inner width: Supports tyres from approximately 2.2 to 2.6 in. Riders using tyres narrower than 2.1 in may experience reduced tyre-sidewall support.
• Asymmetric offset (left 5° / right 7°): Corrects spoke-tension imbalance on rear wheels driven by cassette offset, improving wheel trueness and fatigue life. Requires asymmetric-aware wheel building.
• Hooked bead (U-shape): Compatible with both clincher and tubeless-ready tyres. Not a hookless rim — standard clincher and tubeless tyres are fully supported.
• 100 kg rider weight limit: Suits XC and trail riders. Heavier enduro or downhill riders should consider a higher-volume, reinforced rim model.

Compatible Riding Styles

• Cross-Country (XC) Racing: Ultralight tier (300 ± 10 g) delivers competitive weight savings for race-day builds.
• Trail & All-Mountain (AM): Standard or Superlight tier balances durability and weight across mixed terrain.
• Bikepacking / Gravel 29er: 30mm inner width and 592mm ERD accommodate wide-volume tyres suited to loaded touring.

Frequently Asked Questions

Is a 23mm high carbon rim strong enough for aggressive all-mountain riding?

Yes, for riders under 100 kg. The rim tests at >300 kg forward compressive strength and >50 kg lateral torsion resistance. For sustained rock-garden impacts at heavier rider weights, a 25–30mm profile rim is recommended.

How does this rim's weight compare to aluminium 29er rims?

A quality double-wall aluminium 29er rim typically weighs 450–550 g. The Ultralight tier of this rim (300 ± 10 g) saves approximately 150–250 g per rim — roughly 300–500 g per wheelset — which measurably reduces rotational inertia for climbing and acceleration.

What tyres fit a 30mm inner-width rim?

ETRTO guidelines recommend tyres of 2.2–2.6 in (57–66 mm) for a 30mm inner width. Narrower tyres may balloon; wider tyres may exceed bead-seat integrity at maximum pressure.

Can this rim be built tubeless?

Yes. The hooked U-shape bead and 6.5mm valve hole are tubeless-ready when paired with a tubeless-compatible tyre, rim tape, and valve. Tubeless conversion kit sold separately.

Is custom drilling or spoke count available?

Yes. Spoke hole diameter (default 4.5 mm), valve hole diameter (default 6.5 mm), assembly hole diameter (default 7.5 mm), and nipple angle are all customisable. Contact the manufacturer with build specifications.

Precision Engineering for Enhanced Performance

The asymmetric carbon 29er rim is designed to elevate your mountain biking experience by offering an optimized balance of strength and weight. Featuring a 23mm rim height and a wide 30mm inner width, this rim improves tire stability and traction across diverse terrains. The asymmetric design enhances spoke tension, reducing stress on the wheel and increasing overall durability, making it ideal for both cross-country (XC) and all-mountain riding styles. Weighing between 300 and 380 grams, it provides a lightweight solution without compromising structural integrity, ensuring smooth and efficient rides.

Material and Build Quality: Carbon Advantage

Constructed from premium carbon fiber, this 29er rim is engineered to deliver superior stiffness and impact resistance. Carbon's high strength-to-weight ratio reduces rotational mass, translating to quicker acceleration and easier climbing on rugged trails. The asymmetric profile not only balances spoke pull but also contributes to a more predictable handling experience. Additionally, carbon construction offers excellent vibration dampening, enhancing rider comfort over long-distance rides. This rim’s robust build is tailored specifically for riders who demand both performance and reliability on challenging MTB routes.

Versatility for XC and All-Mountain Riding

Whether you're navigating technical XC trails or tackling demanding all-mountain routes, the asymmetric carbon 29er rim adapts seamlessly. Its 30mm inner width accommodates a wide range of tire sizes, supporting better traction and control. The 23mm rim height offers a perfect balance, providing enough sidewall support for aggressive riding while maintaining a lightweight form factor for endurance. This rim’s design enhances the wheel’s overall stiffness and resilience, making it a practical choice for riders who require a dependable, high-performance rim for varied terrains and riding conditions.