Cerchio MTB BOLA 29er asimmetrico in carbonio | 38mm esterno, 32mm interno
Cerchio MTB BOLA 29er asimmetrico in carbonio | 38mm esterno, 32mm interno
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Il cerchio MTB in carbonio asimmetrico hookless Bola da 29" — un cerchio da 32 mm di larghezza interna e 23 mm di profilo (325-385 g) progettato per XC e all-mountain.
Un profilo da 23 mm mantiene bassa l'inerzia rotazionale, mentre il canale interno da 32 mm stabilizza pneumatici da 2.3"-2.5". Questo cerchio asimmetrico Bola da 29" è costruito sia per le gare XC che per le giornate all-mountain.
Guida all'acquisto.
Fascia di peso - Superlight ~325g: l'allestimento da gara ultraleggero - riduce circa 60g per le salite XC e l'accelerazione, con un margine di resistenza agli impatti più ridotto.
Fascia di peso - Standard ~385g: l'allestimento con margine strutturale rinforzato - scegliilo per le giornate all-mountain dove l'atterraggio di un salto conta più dei grammi.
Pneumatici e terreno: il canale a basso profilo stabilizza pneumatici da 2.3-2.5" - ideale per gare XC e all-mountain; coperture molto strette o molto larghe escono dal suo range ottimale.
Della stessa gamma: questo è il cerchio largo a profilo più basso della linea 29er - preferiscilo quando salite e accelerazione hanno la priorità rispetto al supporto enduro; i cerchi da 30 mm di profilo e 30/34 mm di larghezza sono la scelta per trail/enduro.
Limite peso ciclista 100 kg - includendo ciclista ed equipaggiamento.
Pubblico di riferimento e note sull'utilizzo.
Gare XC, trail e all-mountain; adatto al bikepacking.
Limite peso ciclista 100 kg; non adatto per DH o freeride pesante.
Solo per freni a disco.
La sensazione di guida che ti attende.
Affronta una salita e il profilo basso risulterà leggero come una piuma - abbastanza largo da stabilizzare lo pneumatico, abbastanza leggero da mantenere le gambe fresche. Il canale asimmetrico uniforma la tensione dei raggi, così la ruota rimane centrata giro dopo giro nelle uscite XC e all-mountain. Scegli il layup superleggero; una garanzia di 3 anni sul cerchio supporta la costruzione, per un peso del ciclista fino a 100 kg.
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- Material: carbon
- Rim depth: 23 mm
- External width: 38 mm
- Internal width: 32 mm
- Size: 29 in
- Profile: U-shaped
- Weight Tier: Standard 385g / Superlight 325g
- Max Tire Pressure: 75 psi
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- Weight vs Durability: Standard at 385g provides more structural margin for aggressive riding, while Superlight at 325g offers lower rotational mass for XC racing. Choose based on your priority between durability and speed.
- Tire Volume vs Speed: With 32mm internal width, this rim supports 2.3-2.5" tires, maximizing traction and comfort at the expense of slightly higher rolling resistance compared to narrower rims.
- Stiffness vs Compliance: The asymmetric design and 23mm profile deliver high lateral stiffness for efficient power transfer, but may feel less compliant on rough terrain than deeper or more flexible rims.
- Price vs Grade: Offers competitive pricing for a carbon rim with customizable options, but lacks the premium branding and extensive testing of top-tier competitors.
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- Fatigue Test: 750,000 cycles @640N (ISO 4210-7 Annex A, informative only)
- Impact Resistance: >40J (ISO 4210-7 reference)
- Flatness: <0.25mm (internal QC)
- Roundness: <0.3mm (internal QC)
- Max Spoke Tension: >300kg (internal QC)
- Ultimate Strength: >100kg (internal QC)
- Dynamic Equilibrium: <3g (internal QC)
- Radial Stiffness: 90–110 N/mm (internal lab)
- Lateral Stiffness: ≥8N/mm
- Max System Weight: 100kgs
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- XC Racing: Excellent. The Superlight variant at 325g and low profile is ideal for climbing and acceleration in cross-country racing.
- Trail Riding: Good. The standard variant at 385g provides durability, and the 32mm inner width gives stable tire support for trail conditions.
- All-Mountain: Suitable. Reinforced structure and asymmetric design handle varied terrain, but not for extreme downhill.
- Bikepacking: Suitable. Tubeless ready and comfortable with larger tires, but weight may be a consideration for long tours.
- Not Recommended For: Not recommended for downhill or heavy-duty freeride due to max rider weight of 100kg and intended XC/AM use.
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- Frame Compatibility: 29" mountain bike frames and forks designed for 29" wheels and disc brakes.
- Tire Type: Tubeless-ready clincher tires.
- Tire Width Range: 2.3" - 2.5"
- Brake Standard: Disc brake only (no brake track).
- Drivetrain: Not applicable (rim only).
- Rotor Standard: Not applicable (rim only).
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|---|---|---|---|---|---|---|---|
| Asymmetric Hookless | N/A | N/A | N/A | 325-385 g | 23 mm | 32 mm | see store |
| XC Carbon Rim | N/A | N/A | N/A | ~360 g | 23 mm | 32 mm | ~$200 |
| AM Carbon Rim | N/A | N/A | N/A | ~380 g | 23 mm | 32 mm | ~$230 |
| Trail Carbon Rim | N/A | N/A | N/A | ~350 g | 23 mm | 32 mm | ~$180 |
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What tubeless setup does this rim require?
This rim is hookless and tubeless-ready. You need to use tubeless-compatible tires and sealant. The recommended operating tire pressure is between 45-65 psi. Proper tape and valve installation is essential to avoid leaks.
What tire compatibility does this rim have?
The rim has a 32mm internal width and is designed for tubeless tires from major brands. It supports tire widths from 2.3 to 2.5 inches, providing optimal traction and cornering stability.
What are the weight savings of the Superlight version?
The Superlight variant weighs approximately 60g less per rim compared to the Standard version (325g vs 385g). This reduces rotational mass, improving acceleration and climbing efficiency, ideal for XC racing.
Can this rim be customized for specific builds?
Yes, spoke hole diameter, valve hole, assembly hole, nipple angles, and spoke counts are customizable for private-label or specific wheel builds. OEM support is available for tailored requirements.
How should I maintain and inspect this carbon rim for damage?
Regularly check for impact damage, delamination, or cracks after rides. Clean with mild soap and water, avoid harsh chemicals. Ensure spoke tension is within limits and inspect the bead seat for wear. Follow the warranty guidelines for structural defects.
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