Cerchio MTB Enduro BOLA 29er in carbonio | 36mm esterno, 30mm interno
Cerchio MTB Enduro BOLA 29er in carbonio | 36mm esterno, 30mm interno
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Cerchio da enduro in carbonio hookless Bola 29er — un cerchio Toray T700 da 30 mm di larghezza interna e 30 mm di altezza (385-455g), progettato per enduro e all-mountain.
Progettato appositamente per enduro e all-mountain, questo cerchio hookless 29er Bola abbina un canale interno da 30 mm al carbonio Toray T700, consentendoti di utilizzare moderni pneumatici da 2.3"-2.6" a pressioni inferiori senza deformazioni.
Guida all'acquisto.
Classe di peso - Superleggero ~385g: la scelta di grado Light per ciclisti sotto i ~100 kg - veloce in salita, con un margine sufficiente per l'enduro quando la struttura più leggera è comunque adeguata.
Classe di peso - Standard ~455g: la struttura a tolleranza di massa media - sceglila quando lo stress dell'enduro e il peso del ciclista rendono la durata prioritaria rispetto al peso.
Pneumatici e terreno: il canale dritto ospita coperture da 2.3-2.6" a basse pressioni da enduro per una tenuta hookless ottimale - costruito per enduro e all-mountain, non per la leggerezza da XC.
Stessa gamma: questo cerchio da 30 mm hookless a bordo dritto è la controparte enduro del cerchio asimmetrico da 30 mm (~$310) - scegli quello asimmetrico per la simmetria della tensione dei raggi, questo per un fondo tubeless pulito a forma di U.
Omologato per un peso del sistema di 110 kg.
Target e note sull'utilizzo.
Ciclisti enduro e all-mountain che desiderano una piattaforma tubeless rigida e leggera.
Solo per freni a disco; la stratificazione superleggera è ideale per ciclisti sotto i 100 kg.
Peso massimo del sistema 110 kg.
L'esperienza di guida che ti attende.
Affronta il sentiero e senti i fianchi di supporto darti il coraggio di osare: questo cerchio assorbe le vibrazioni invece di deviare, mantenendo la ruota posteriore incollata alla traiettoria scelta. Il bordo hookless pulito a forma di U sigilla il tubeless al primo colpo, a ogni uscita. Assemblalo come vuoi con fori personalizzati per i raggi, e goditi la garanzia di 3 anni sul cerchio inclusa.
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- Material: Toray UD carbon
- Rim depth: 30mm
- External width: 36mm
- Internal width: 30mm
- Size: 29in
- Profile: Hookless
- Weight Tier:
- Max Tire Pressure: 75
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- Weight vs Durability: The superlight 385g rim saves ~70g vs the standard 455g option, but the lighter version is only recommended for riders under 100kg, while the heavier version supports heavier loads and more aggressive riding.
- Tire Volume vs Rolling Resistance: The 30mm inner width optimizes tire shape for 2.3–2.6" tires, increasing volume and traction at lower pressures, but may increase rolling resistance compared with narrower rims.
- Stiffness vs Compliance: High modulus Toray T700 carbon gives high stiffness for responsive handling, but the rim may transmit more vibration on rough terrain compared with alloy rims that flex slightly.
- Cost vs Performance: Carbon rims typically cost more than alloy equivalents but save 35–120g per rim and offer better impact resistance, making them a performance upgrade for serious riders.
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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: 110kgs
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- Climbing / Hill Repeats: Good - The lightweight construction (385g option) aids climbing efficiency.
- Gran Fondo / Endurance: Suitable - The rim is designed for aggressive trail riding rather than long-distance road, but it can handle endurance rides with proper tires.
- Road Racing: Not recommended - This is a mountain bike rim designed for off-road use, not for road racing.
- Sprinting / Criterium: Not recommended - The wide 30mm internal width is optimized for traction and lower pressures, not for aerodynamic sprinting on pavement.
- Training / Daily Riding: Suitable - The rim is durable enough for regular trail riding, but not ideal for paved road training.
- Not Recommended For: Road racing, criterium racing, and primarily paved road riding because it is designed for enduro and all-mountain off-road use.
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- Frame Compatibility: 29-inch enduro/all-mountain frames (100x15mm or 110x15mm front, 142x12mm or 148x12mm rear axle depending on hub)
- Tire Type: Tubeless-ready, hookless compatible with leading tire brands
- Tire Width Range: 2.3"–2.6" (optimal)
- Brake Standard: Disc brake only (no rim brake track)
- Drivetrain: Any drivetrain (compatible with all cassette types)
- Rotor Standard: N/A (rim only; rotor mounts to hub)
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|---|---|---|---|---|---|---|---|
| 29er Carbon MTB Rim | _ | _ | _ | 385g/455g | 30mm | 30mm | see store |
| Sprint | _ | _ | _ | 400g | 30mm | 30mm | ~$220 |
| XCR | _ | _ | _ | 420g | 30mm | 30mm | ~$180 |
| Drive | _ | _ | _ | 410g | 30mm | 30mm | ~$200 |
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How do I set up this tubeless rim?
The rim features a hookless bead design with a U-shaped profile for improved tubeless sealing. Use a tubeless-compatible tire and sealant. Install the tire, inflate to seat the bead, then add sealant through the valve. Recommended tire pressure range is lower due to wide inner width, typically 20-30 psi for enduro riding. Ensure the rim tape is properly installed if not using factory-taped rims.
What tire sizes are compatible?
The rim is optimized for 2.3" to 2.6" tires. This wide range supports modern tire profiles, providing excellent cornering traction and sidewall support. For best performance, choose tires within this range. The 30mm inner width allows lower pressures without excessive squirm, improving comfort and control on rough terrain.
How much weight can I save compared with an alloy rim?
Depending on the alloy rim, you can save 35–120g per rim. The superlight 385g carbon option is significantly lighter than most alloy rims, which typically weigh 450-550g. This weight reduction improves acceleration and climbing responsiveness, but keep in mind the weight limit of 100kg for the superlight version.
Can I customize the spoke holes and finish?
Yes, we offer multiple finish and spoke-hole options for OEM and custom branding. Whether you need specific spoke counts (e.g., 28/32) or a custom paint job, we can accommodate. Small-to-medium brands can work with us for tailored builds. All custom orders come with a 3-year warranty.
What maintenance and inspection is required?
Regularly inspect the rim for cracks, delamination, or impact damage, especially after heavy hits. Check spoke tension periodically and ensure it stays within the recommended range of >300kg. Clean the rim with mild soap and water, avoid harsh chemicals. Replace the rim if any structural damage is found. The hookless bead area should be checked for wear or deformation to maintain a proper tubeless seal.
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