Cerchio Gravel in carbonio 700c 40mm — Hooked 24mm / Hookless 25mm
Cerchio Gravel in carbonio 700c 40mm — Hooked 24mm / Hookless 25mm
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Cerchio gravel in carbonio Bola 700c: profilo da 40 mm, larghezza esterna da 30 mm (325-395 g), con canale interno da 24 mm (hooked) o 25 mm (hookless), predisposto per tubeless.
Una soluzione gravel più aerodinamica: la sezione a V da 40 mm offre maggiore stabilità sui tratti gravel veloci, mentre la piattaforma esterna da 30 mm stabilizza i copertoni larghi. Scegli la versione hooked per un'ampia compatibilità o quella hookless per i moderni sistemi tubeless.
Guida all'acquisto.
Classe di peso - Extreme Light ~325 g: l'allestimento da gara ultraleggero per le giornate di gravel veloce e ciclocross.
Classe di peso - Ultralight ~345 g: il compromesso ideale tra gara e allenamento.
Classe di peso - Superlight ~365 g: l'allestimento gravel versatile per ogni condizione.
Classe di peso - Normal ~395 g: l'allestimento ad alta resistenza per chilometraggi più impegnativi.
Larghezza interna - Hooked 24 mm: ampia compatibilità con camere d'aria/copertoni; sceglila se utilizzi occasionalmente camere d'aria o copertoni datati.
Larghezza interna - Hookless 25 mm: moderno standard tubeless ETRTO per pressioni inferiori; sceglila per la tenuta più efficace e una pressione di rotolamento ottimizzata.
Della stessa gamma: questo è il cerchio a profilo più alto della linea gravel, superiore alle opzioni da 30 mm e 35 mm ($310) quando l'aerodinamica sui tratti veloci è fondamentale.
Limite di peso del ciclista: 100 kg.
Pubblico di riferimento e note d'uso.
Gravel racing, bikepacking e terreni misti; non adatto a copertoncini stradali ad alta pressione.
Limite di peso del ciclista: 100 kg; solo per freni a disco.
L'esperienza di guida che ti aspetta.
Affronta un tratto gravel veloce e senti come il profilo a V più profondo mantenga la traiettoria: abbastanza aerodinamico da fendere il vento, sufficientemente largo da stabilizzare un copertone voluminoso sui terreni accidentati. Configuralo tubeless per scivolare sopra le asperità, rimanendo stabile dove i cerchi a profilo basso verrebbero spostati dalle raffiche. Scegli tra hooked o hookless e la tua configurazione preferita; la garanzia sul cerchio di 3 anni è inclusa.
Specifications
- Material: carbon
- Rim depth: 40mm
- External width: 30mm
- Internal width: 24/25mm
- Size: 700c
- Profile: V-shaped
- Weight Tier: Normal (395g), Superlight (365g), Ultralight (345g), Extreme Light (325g)
- Max Tire Pressure: 110 (hooked) / 85 (hookless)
Trade-offs & Considerations
- Aero vs Climbing: 40mm depth offers moderate aero efficiency without significant weight penalty; select the 325g Extreme Light tier for climbing focus, or the 395g Normal tier for added durability.
- Stiffness vs Compliance: 30mm outer width provides a stiff platform for power transfer, but allows lower tire pressures for compliance; hooked (24mm inner) and hookless (25mm inner) options affect tire shape and ride feel.
- Tire Volume vs Speed: Supports 38c–50c tires for increased volume and traction on gravel; the 40mm profile reduces drag at higher speeds compared to shallower rims, balancing speed and grip.
- Weight vs Durability: Weight tiers span 325g to 395g; lighter tiers sacrifice durability margin, especially for heavier riders or harsh terrain, while heavier tiers offer more resilience and strength.
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: N/A
Recommended Use Cases
- Gravel Racing: Excellent. Optimized for mixed terrain with 38c-50c tire support and aero profile.
- Bikepacking: Good. Wide platform and weight options suit loaded touring, but lighter tiers may be less durable.
- Gran Fondo / Endurance: Suitable. Comfortable with wide tires, but aero benefit limited on road surfaces.
- Road Racing: Not recommended. Designed for gravel, not high-pressure road tires; max pressure capped.
- Training / Daily Riding: Good. Durable options available, but better suited for gravel surfaces.
- Not Recommended For: High-pressure road clincher applications; extreme-light tier for heavy riders.
Compatibility
- Frame Compatibility: Disc brake frames and forks; compatible with thru-axle or quick release depending on hub (rim only)
- Tire Type: Tubeless (hooked or hookless); also compatible with tubed setups using hooked version
- Tire Width Range: 27c - 42c
- Brake Standard: Disc only (no rim brake surface)
- Drivetrain: Compatible with all drivetrains (rim is drivetrain-agnostic)
- Rotor Standard: Compatible with any disc brake rotor (mounting depends on hub)
How It Compares
| Model | Hub | Spoke | Bearing | Weight | Depth | Width | Price |
|---|---|---|---|---|---|---|---|
| Bola 700c Carbon Gravel Rim | N/A | N/A | N/A | 325-395g | 40mm | 24/25mm | see store |
| 40 Carbon Gravel Rim | N/A | N/A | N/A | ~350g | 40mm | 30mm | ~$750 |
| 40|30 Gravel Rim | N/A | N/A | N/A | ~360g | 40mm | 30mm | ~$800 |
| 40 Gravel Rim | N/A | N/A | N/A | ~370g | 40mm | 30mm | ~$650 |
FAQ
How do I set up these rims tubeless?
Apply rim tape covering the spoke bed, install a compatible tubeless valve, and mount tubeless tires. Use a compressor or high-volume pump to seat the bead. The spoke bed is not sealed from the factory, so proper taping is essential. Hooked versions allow up to 125 psi; hookless versions follow ETRTO guidance (e.g., max 73 psi).
Which tire sizes are compatible?
The rims are designed for 38c to 50c gravel tires. The outer width is 30mm, with inner widths of 24mm (hooked) or 25mm (hookless). Mounted tire width is typically 2-3mm wider than labeled. Hookless requires ETRTO-compliant tires and lower pressure.
What weight savings can I expect between the tiers?
The Normal tier weighs 395±15g, Superlight 365±10g, Ultralight 345±10g, and Extreme Light 325±10g. Choosing Extreme Light saves 70g per rim compared to Normal, but reduces durability margin, especially for heavier riders or aggressive terrain.
Can I customize the rim for my build?
Yes, ERD, valve hole, spoke hole, assembly hole, nipple angles, and drilling patterns are customizable. You can specify these to match your hub and spoke choices. Contact us for custom orders.
What maintenance and inspection is recommended?
Regularly check spoke tension and true the wheel. Impact damage from rocks can cause flatness or roundness deviations; keep tolerances within 0.15mm flatness and 0.3mm roundness. The rims are disc-brake specific, so inspect for brake heat damage. Spoke hole tension should not exceed 280kg.
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
