Carbon Fiber Sporting Goods
Asymmetric Carbon 29er MTB Rim – 23mm High, 30mm Inner Width, 300–380g (XC / All-Mountain)
Asymmetric Carbon 29er MTB Rim – 23mm High, 30mm Inner Width, 300–380g (XC / All-Mountain)
Κανονική τιμή
$310.00 USD
Κανονική τιμή
$300.00 USD
Τιμή έκπτωσης
$310.00 USD
Τα έξοδα αποστολής υπολογίζονται κατά την ολοκλήρωση της αγοράς.
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🚚 预计发货：15天内
Asymmetric Carbon 29er MTB Rim — 23mm High / 30mm Inner Width
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
| Specification | Value |
|---|---|
| Wheel Size | 29er (700c compatible) |
| Rim Shape | U-shape (hooked) |
| Rim Height | 23 mm |
| Outer Width | 36 mm |
| Inner Width | 30 mm |
| ERD (Effective Rim Diameter) | 592 mm |
| Weight – Standard | 380 ± 15 g |
| Weight – Superlight | 330 ± 10 g |
| Weight – Ultralight | 300 ± 10 g |
| Forward Compressive Strength | > 300 kg |
| Lateral Torsion Resistance | > 50 kg |
| Spoke Hole Tension | > 280 kg |
| Dynamic Imbalance | < 3 g |
| Flatness Tolerance | < 0.15 mm |
| Roundness Tolerance | < 0.3 mm |
| Valve Hole Diameter | 6.5 mm (customisable) |
| Spoke Hole Diameter | 4.5 mm (customisable) |
| Assembly Hole Diameter | 7.5 mm (customisable) |
| Nipple Angle | Left 5° / Right 7° (asymmetric offset; customisable) |
| Min / Max Tyre Pressure | 45 / 65 psi |
| Max Rider Weight | 100 kg |
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.
