Cerchio per gravel/ciclocross da 700C in carbonio, 30mm, Tubeless | Bola
Cerchio per gravel/ciclocross da 700C in carbonio, 30mm, Tubeless | Bola
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Cerchio gravel/ciclocross Bola 700C 30mm in carbonio: un cerchio tubeless con profilo a V da 30mm, larghezza di 30mm e canale interno da 24-25mm, disponibile in quattro opzioni di peso leggero, per gravel e CX.
Dove il sentiero sterrato si restringe e il percorso diventa imprevedibile, questo cerchio permette al ciclista di mantenere agilità e reattività.
Guida all'acquisto.
Fascia di peso - ~325g (Ultraleggero): una piuma per percorsi CX tecnici e salite gravel ripide.
Fascia di peso - ~345-365g (Ultraleggero): la scelta da gara bilanciata per la maggior parte dei ciclisti gravel e CX.
Fascia di peso - ~390g (Leggero): l'opzione resistente per percorsi CX rocciosi e ciclisti più pesanti.
Larghezza interna - 24mm: 33-42c a ~35-55 PSI per il ciclocross.
Larghezza interna - 25mm: 40-50c a ~25-45 PSI per il gravel ad alto volume.
Serie stessa profondità: il cerchio gravel 36/30 da 30mm ($320) presenta un canale più largo; questo cerchio rimane stretto, leggero e agile.
Profondità adiacente: il cerchio gravel asimmetrico da 45mm ($310) offre maggiore aerodinamicità sui tratti gravel veloci; questo cerchio da 30mm è la scelta più equilibrata e leggera.
Pubblico di riferimento e note sull'utilizzo.
Ciclisti gravel, ciclisti CX, bikepacker e assemblatori di ruote.
Telai gravel/CX per freni a disco; cerchio singolo.
Certificato per un peso complessivo di 100kg.
Non è un cerchio a profilo alto aerodinamico o da corsa su strada.
L'esperienza di guida che ti attende.
Su un percorso CX bagnato, lascia che lo pneumatico faccia presa nel fango e sull'erba a bassa pressione; il cerchio segue la direzione impressa, agile come una volpe tra i nastri del tracciato.
Ogni colpo di pedale si traduce in reattività immediata, senza dispersioni.
Spedizione gratuita e 3 anni di garanzia sul cerchio supportano la tua campagna fuoristrada.
Specifications
- Material: carbon fiber
- Rim depth: 30mm
- External width: 30mm
- Internal width: 24mm / 25mm
- Size: 700C
- Profile: V-section
- Weight Tier: 325g / 345g / 365g / 390g
- Max Tire Pressure: 90
Trade-offs & Considerations
- Aero vs Climbing: At 30mm depth, this rim offers a balance between aerodynamic efficiency and climbing performance. It reduces drag compared to shallow rims while keeping weight low, with options from 325g to 390g, making it responsive on climbs without significant aero penalty.
- Weight vs Durability: Weight ranges from 325g to 390g depending on variant, allowing riders to choose between lighter weight for climbing or heavier build for increased durability. The unidirectional plus woven carbon laminate provides strength, while heavier variants likely use more material for impact resistance.
- Tire Volume vs Speed: Wide rim design (30mm external, 24-25mm internal) supports tires from 33c to 50c, enabling high-volume setups for comfort and traction on rough terrain. However, larger tires increase rolling resistance and weight, potentially reducing speed on smooth surfaces.
- Crosswind vs Aero: The 30mm rim depth is moderate, providing good crosswind stability while still offering some aerodynamic benefit. It avoids the crosswind sensitivity of deeper rims (50mm+), making it predictable in gusty conditions.
Performance Test Data
- 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: 100
Recommended Use Cases
- Gravel Racing: Excellent
- Bikepacking: Good
- Gran Fondo / Endurance: Good
- Road Racing: Not recommended
- Training / Daily Riding: Good
- Not Recommended For: Not recommended
Compatibility
- Frame Compatibility: 700C disc brake frames (gravel/CX bikes)
- Tire Type: Tubeless-ready clincher
- Tire Width Range: 27-42c
- Brake Standard: Disc
- Drivetrain: N/A (rim only)
- Rotor Standard: Center-lock and 6-bolt
How It Compares
| Model | Hub | Spoke | Bearing | Weight | Depth | Width | Price |
|---|---|---|---|---|---|---|---|
| 700C Carbon Gravel/Cyclocross Rim | - | - | - | 325-390g | 30mm | 24mm / 25mm | see store |
| 30 Carbon Gravel | - | - | - | ~350g | 30mm | 30mm | ~$400 |
| 30 Gravel | - | - | - | ~360g | 30mm | 30mm | ~$450 |
| Gravel 30 | - | - | - | ~340g | 30mm | 30mm | ~$380 |
FAQ
How do I set up this rim tubeless?
Setting up tubeless is straightforward. The rim is designed with a 6.5mm valve, and you'll need tubeless tape compatible with 24-25mm internal width. Use a sealant like Stan's or Orange Seal. Mount a tubeless tire, inflate to 30-50 psi depending on tire size, and ensure a proper bead seat. The rim's wide profile helps prevent burping in rough terrain.
What tire sizes are compatible?
The rim has an external width of 30mm and internal widths of 24mm (for 33-42c tires) and 25mm (for 40-50c tires). So it supports a wide range of gravel and cyclocross tires. For gravel, 40-50c is recommended; for cyclocross, 33-42c. This allows you to run lower pressures for comfort and grip.
How much weight does this rim save compared to aluminum?
Carbon rims typically save 200-400g per rim compared to aluminum. This rim weighs between 325g and 390g depending on the variant. For example, a typical aluminum rim at similar width might weigh 450-500g, so you could save 50-150g per rim. Over a wheelset, that's a significant reduction in rotating weight.
Can I build this rim into a custom wheelset?
Yes, this rim is designed for custom builds. It supports both center-lock and 6-bolt disc brake rotors, and has a spoke bed compatible with standard J-bend spokes. You can choose your own hubs and spokes. Ensure the rim is tensioned within the recommended range (max spoke tension >300kg) to avoid damage.
How should I inspect and maintain this carbon rim?
Regularly check for cracks, chips, or delamination on the rim surface. After rides, clean with mild soap and water. Avoid excessive heat from braking; the rim is designed for disc brakes, so heat is dissipated through the rotor, not the rim. Impact damage from rocks can cause hidden structural issues, so inspect after heavy impacts. Replace if you see any structural damage.
Warranty & Shipping
- Warranty Period: 3 years for rims / 2 years for wheelsets
- Warranty Coverage: Manufacturing defects on carbon structure
- Crash Replacement: 30% discount within warranty period
- Processing Time: 1–3 business days; 7–15 business days for custom or out-of-stock items
- Shipping Method: FedEx / UPS / DPD Economy (free, duties & VAT included) · Expedited option at checkout (duties & VAT payable on delivery)
- Estimated Delivery:Economy 7–20 business days · Expedited 3–7 business days, excluding customs clearance
- Packaging: Double-wall carton with foam protection
