Cerchio per bici gravel 700C in carbonio, profilo 45mm, asimmetrico, canale interno da 24mm
Cerchio per bici gravel 700C in carbonio, profilo 45mm, asimmetrico, canale interno da 24mm
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Cerchio asimmetrico Bola 700C 45mm per gravel/bici da corsa a disco: un cerchio tubeless da 45mm a profilo medio e 30mm di larghezza, con canale interno da 24-25mm, progettato per il gravel, l'all-road e il ciclocross con freni a disco.
Progettato per chi assembla ruote a disco e cerca un unico cerchio in grado di affrontare gravel grinder, giornate all-road e il fango del ciclocross.
Guida all'acquisto.
Classe di peso - leggero ~360g (Ultralight): per gare gravel veloci e salite, dove l'accelerazione ha la priorità sulla resistenza agli impatti.
Classe di peso - superiore ~435g (Light): per un uso gravel intenso e ciclisti più pesanti, sacrificando un po' di peso in cambio di una maggiore robustezza.
Canale interno - 24mm con uncino: 28-40c a ~50-75 PSI per endurance su strada e gravel veloce.
Canale interno - 25mm hookless: 38-50c a ~30-45 PSI per gravel accidentato e fango da ciclocross.
Serie con stessa profondità: il cerchio tubolare da 45mm ($310) è un'opzione per corse su strada con tubolari; il cerchio da 45mm 34/28mm ($310) presenta un canale moderno molto più largo.
Profondità adiacente: il cerchio gravel/CX da 30mm ($310) è più leggero e stabile con vento rafficato; il cerchio da 50mm 30mm ($310) aggiunge vantaggi aerodinamici in piano.
Solo per freni a disco; rispettare il limite di peso del sistema.
Destinatari e note sull'utilizzo.
Appassionati di ruote fai-da-te, meccanici, corridori gravel e chiunque debba sostituire un cerchio danneggiato.
Questo è un singolo cerchio (mozzi, raggi e nippli venduti separatamente).
Telai gravel/CX road per freni a disco; battuta 142x12 o 135x9 a seconda della scelta del mozzo.
Peso massimo del sistema 110kg.
Non adatto per uso off-road pesante/MTB.
L'esperienza di guida che ti attende.
Imbocca un sentiero sterrato e la struttura offset manterrà una linea sicura, con l'ampio canale che galleggia sulle sconnessioni a basse pressioni.
Ti sentirai connesso a ogni pietra ma isolato dalle più insidiose, pennellando curve a velocità che il terreno normalmente non permetterebbe.
Spedizione gratuita e 3 anni di garanzia sul cerchio ti proteggono fin dalla prima uscita polverosa.
Specifications
- Material: Carbon fiber
- Rim depth: 45mm
- External width: 30mm
- Internal width: 24-25mm
- Size: 700c
- Profile: Asymmetric
- Weight Tier: Lightweight (360-435g)
- Max Tire Pressure: 90
Trade-offs & Considerations
- Aero vs Climbing: 45mm depth provides good aerodynamic efficiency on flats but adds weight (~380g) compared to shallower rims, making steep climbs slightly less effortless.
- Stiffness vs Compliance: Asymmetric carbon layup offers high lateral stiffness (≥8N/mm) for power transfer, but this can transmit road buzz; however, the wide 24-25mm internal width allows running lower tire pressures (e.g., 30-40 psi on 40c tires) to improve compliance.
- Tire Volume vs Speed: The 24-25mm internal width supports tires from 33-50c, maximizing volume and traction for gravel, but wider tires increase rolling resistance and reduce aero efficiency compared to 28c road tires.
- Price vs Grade: At ~$310, it offers a mid-range price with performance comparable to higher-priced rims, though the carbon grade (unidirectional + woven) and warranty (3 years) reflect a balance of cost and durability.
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: 110
Recommended Use Cases
- Climbing / Hill Repeats: Good
- Gran Fondo / Endurance: Excellent
- Road Racing: Excellent
- Sprinting / Criterium: Good
- Training / Daily Riding: Excellent
- Not Recommended For: Not recommended for heavy off-road use or extreme mountain biking
Compatibility
- Frame Compatibility: 700C road, gravel, cyclocross bikes with disc brakes and 142x12mm or 135x9mm spacing (for QR, but typically for thru-axle)
- Tire Type: Tubeless-ready, clincher (with tube), and tubeless
- Tire Width Range: 27-42mm
- Brake Standard: Disc brake only (center-lock or 6-bolt rotor compatible)
- Drivetrain: Compatible with any drivetrain (Shimano, SRAM, Campagnolo) provided you choose the correct freehub for your wheelset; this is a rim, so no drivetrain interference
- Rotor Standard: Center-lock or 6-bolt disc brake rotor
How It Compares
| Model | Hub | Spoke | Bearing | Weight | Depth | Width | Price |
|---|---|---|---|---|---|---|---|
| 45mm Gravel/Road Rim | _ | _ | _ | 360g | 45mm | 24-25mm | see store |
| Aero 45 | _ | _ | _ | 380g | 45mm | 24mm | ~$300 |
| Gravel 45 | _ | _ | _ | 390g | 45mm | 25mm | ~$280 |
| Road 45 | _ | _ | _ | 400g | 45mm | 24-25mm | ~$320 |
FAQ
How do I set up this rim tubeless?
Use tubeless tape (e.g., 25mm wide) and a tubeless valve (6.5mm). Ensure the rim bed is clean and dry. Mount a tubeless tire, seat it with a compressor or high-volume pump, and add sealant (about 60ml per tire). The rim is designed for tubeless and has a bead lock for secure seating.
What tire sizes are compatible?
The 24-25mm internal width supports tires from about 33mm to 50mm wide. For gravel, 40-45mm tires are ideal; for road, 28-35mm. Always check the tire manufacturer's recommended width range for your internal rim width.
How much weight can I save by using this rim?
Compared to a typical alloy rim of similar depth, this carbon rim saves around 300-400g per wheel. The rim weighs between 360g and 435g depending on width and drilling, whereas a comparable alloy rim often exceeds 700g.
Can I build this rim with any hub?
Yes, it's a standard 700C rim with a 622mm bead seat diameter. It's compatible with most hubs and spokes. Ensure you use the correct spoke length based on your hub and lacing pattern. The rim is drilled for either 20, 24, 28, or 32 holes, depending on the option.
How do I maintain this carbon rim and avoid damage?
Regularly inspect for cracks, delamination, or impact damage, especially after hard rides. Clean with mild soap and water, avoid harsh chemicals. When mounting tires, use tire levers carefully to avoid damaging the bead. Over time, check spoke tension and true the wheel as needed.
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
