Cerchio per bici 700C 88mm Deep Aero in carbonio Tubeless | 26mm di larghezza TT Triathlon
Cerchio per bici 700C 88mm Deep Aero in carbonio Tubeless | 26mm di larghezza TT Triathlon
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Il cerchio Bola 700C 88mm U-shape in carbonio tubeless-ready: il profilo più alto della linea Bola, largo 26mm, per configurazioni da cronometro e triathlon su percorsi piatti.
Quando ogni secondo e ogni watt contano, il cerchio Bola 88mm TT non delude: un'arma dal profilo a U profondo, progettata per gli sforzi prolungati ad alta velocità tipici delle gare a cronometro e del triathlon. Ottantotto millimetri di carbonio Toray, 26mm di larghezza, venduto solo cerchio.
Guida all'acquisto.
Classe di peso - Superlight ~650g: la scelta per il corridore da percorsi piatti: l'opzione più leggera, per una build dedicata alle crono su asfalto liscio.
Classe di peso - Standard ~690g: la scelta resistente: maggiore margine di stratificazione per ciclisti TT più pesanti e percorsi stradali più irregolari.
Peso massimo del ciclista: certificato fino a 125kg - verificare ciclista + attrezzatura prima di ordinare.
Serie con profondità simile: il cerchio tri da 65mm è meno profondo e più stabile; il modello tubeless U-shape da 60mm è la versione road per freni a disco.
Profondità adiacente: nessun cerchio Bola supera gli 88mm - questa è l'opzione a profondità massima.
Pubblico di destinazione e note d'uso.
Pubblico di destinazione: ciclisti di cronometro e triathlon che assemblano set di ruote dedicati a percorsi piatti.
Solo cerchio.
Utilizzare un compressore per far tallonare i copertoni tubeless; utilizzare pattini freno specifici per carbonio e prestare attenzione al surriscaldamento in discesa; rispettare il limite di 120 psi e 125kg.
Non indicato per salite, corse su strada o vento laterale.
L'esperienza di guida che ti aspetta.
Assemblalo con un mozzo dedicato TT e raggi piatti, monta un tubeless da 28mm e il percorso piatto diventerà il tuo teatro: 88mm di profilo a U che fende l'aria, con la ruota che segue la traiettoria come su un binario mentre i chilometri scorrono. Pura aerodinamica, puro "out-and-back", pura velocità. Spedizione gratuita, garanzia sul cerchio di 3 anni e sconto in caso di sostituzione per incidente.
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- Materiale: Toray Carbon
- Altezza: 88mm
- Larghezza esterna: 26mm
- Larghezza interna: 20mm
- Misura: 700C
- Profile: U-shape
- Peso Tier: Standard 690g / Superlight 650g
- PSI massimo: 120
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- Aero vs Climbing: The 88mm deep U-shape profile provides excellent aerodynamic efficiency for TT and triathlon, but adds significant Peso (~690g/650g) compared to shallower rims, making climbing less efficient. On steep grades, the rotating Peso will be noticeable.
- Stiffness vs Compliance: Full carbon construction delivers high lateral stiffness for precise handling, but the deep, wide profile can transmit road vibrations, sacrificing some compliance. The 25mm outer width allows for lower tire pressures (down to ~80 psi) to improve comfort.
- Tire Volume vs Speed: The 18mm internal width supports tires from 25-32mm, allowing wider tires for lower rolling resistance and comfort, but at the expense of aerodynamic drag compared to narrower tires. Optimal width for speed is around 28mm with this rim.
- Peso vs Durability: Choose the Standard (690g) for more durability and impact resistance, or the Superlight (650g) to save 40g per rim, but at a potential cost of long-term strength. Both are ISO tested, but the lighter version may be more prone to damage from curb strikes.
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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 Raggio 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 Peso: 125kgs
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- Sprinting / Criterium: Suitable
- Triathlon / TT: Excellent
- Road Racing: Good
- Gran Fondo / Endurance: Suitable
- Climbing / Hill Repeats: Not recommended
- Not Recommended For: Climbing / steep terrain
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- Frame Compatibility: 700C road, TT, or triathlon frames with rim brakes
- Tire Type: Clincher (Tubeless-ready)
- Tire Width Range: 25-36mm
- Freno Standard: Rim Freno (carbon-specific Freno pads)
- Drivetrain: N/D (rim only)
- Rotore Standard: N/D (rim only)
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|---|---|---|---|---|---|---|---|
| Bola 88mm | — | — | — | 690g (Standard) | 88mm | 26mm | vedi negozio |
| Aero88 | Novatec | Pillar | Steel | 720g | 88mm | 25mm | ~$550 |
| Tri88 | Bitex | Sapim | Steel | 700g | 88mm | 25mm | ~$650 |
| Speed88 | DT Swiss | DT Aerolite | Ceramic | 680g | 88mm | 25mm | ~$800 |
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How do I set up tubeless tires on this rim?
This rim is tubeless-ready, meaning you can mount tubeless tires without a tube. Apply tubeless tape to the inner channel (18mm), install the valve, and use a tubeless-compatible tire. Inflate with a high-volume pump or compressor to seat the bead; the recommended maximum pressure is 125 psi. For best results, use a sealant like Stan's No Tubes.
What tire sizes are compatible with this rim?
The rim has an internal width of 18mm and an external width of 25mm, optimized for tires between 25mm and 32mm wide. This range balances aerodynamics and rolling resistance, with 28mm tires often providing the best all-around performance. Wider tires up to 32mm can be used for enhanced comfort, but may slightly increase drag.
How much weight can I save with the Superlight version?
The standard rim weighs approximately 690g, while the Superlight version weighs about 650g, saving 40g per rim. This reduction is achieved through layup optimization without compromising the structural certifications. For a pair, that totals an 80g saving, which can slightly improve acceleration and climbing performance.
Can I use this rim with any hub for custom builds?
Yes, this rim is designed for custom wheelbuilding. With a 462mm ERD and 6.5mm Presta valve hole, it is compatible with most road hubs and spokes. Use a standard 2-cross or 3-cross lacing pattern, and ensure your spokes are the correct length. The rim supports a maximum spoke tension of 280kg, providing a solid base for reliable builds.
How do I inspect the rim for damage or delamination?
Regularly check the rim for hairline cracks, bulges, or discoloration, especially after impacts. Delamination is a risk for carbon rims; listen for unusual sounds during braking and visually inspect the brake track. Use a coin tap test: a dull thud may indicate internal separation. If you suspect damage, stop using the rim and consult a professional. The rim is warrantied against manufacturing defects for 3 years.
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