Cerchio MTB BOLA 32 fori in carbonio asimmetrico | 30mm canale interno Hookless Tubeless
Cerchio MTB BOLA 32 fori in carbonio asimmetrico | 30mm canale interno Hookless Tubeless
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Cerchio MTB asimmetrico a U Bola da 32" (BSD 696 mm), 36/30 mm, hookless, 350/450 g, tubeless, trail/enduro.
Il cerchio a ruota grande
Un cerchio asimmetrico a forma di U da 32 pollici (BSD 696 mm) - 36 mm esterno, 30 mm interno - per trail, enduro e freeride. Carbonio Toray UD; tubeless hookless.
Guida all'acquisto.
Fascia di peso - Superleggera ~350 g: per i trail racer e i ciclisti orientati al cross-country che cercano di migliorare in salita e ridurre la massa rotazionale, a costo di un margine di resistenza agli impatti inferiore.
Fascia di peso - Standard ~450 g: ideale per enduro, freeride e percorsi trail più accidentati dove la robustezza conta più del peso; resiste agli urti che metterebbero in difficoltà la versione superleggera.
Larghezza interna - 30 mm: si abbina a pneumatici da trail larghi da 2,3-2,8 pollici a bassa pressione per una maggiore aderenza su radici e terreni morbidi.
Stessa famiglia - il cerchio wave Bola 29er 36x30 è il cugino da 29 pollici; scegli questa versione da 32" solo se il tuo telaio permette l'alloggiamento di ruote più grandi e desideri il cerchio dal rotolamento più ampio.
Pubblico di riferimento e note sull'utilizzo.
Trail, enduro, freeride, bikepacking.
Non adatto a uso stradale.
L'esperienza di guida che ti attende.
Montalo, addentrati nei boschi e scoprirai che il grande cerchio da 32" affronta radici e giardini di roccia con una sicurezza che rasenta il teatrale: il profilo hookless mantiene lo pneumatico largo a pressioni bassissime, mentre il design offset mantiene la ruota centrata anche sotto sforzo. Affronta quel drop, ascolta il suono del carbonio e fidati. Una garanzia di 3 anni sul cerchio e la spedizione gratuita trasformano l'esitazione in un acquisto.
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- Material: Toray UD carbon
- Rim depth: 30mm
- External width: 36mm
- Internal width: 30mm
- Size: 32 inch
- Profile: asymmetric U-shaped
- Weight Tier: 350g / 450g
- Max Tire Pressure: 75
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- Weight vs Durability: Superlight layup (350g) reduces rotating weight for climbers, but standard layup (450g) offers increased impact resistance for aggressive riding.
- Stiffness vs Compliance: The 30mm rim height and asymmetric U-shape provide high lateral stiffness for precise cornering, while the tubeless hookless design allows lower tire pressures for improved vertical compliance.
- Tire Volume vs Speed: The 30mm inner width supports up to 2.8" tires for maximum traction and volume, but wider tires increase rolling resistance; narrower 2.3" tires offer faster acceleration.
- Price vs Grade: Bola offers two carbon layups at different price points, allowing riders to choose between a premium superlight version and a more affordable standard version without sacrificing structural integrity.
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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: N/A
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- Trail Riding: Excellent
- Enduro Racing: Good
- Freeride/Downhill: Suitable
- Bikepacking: Suitable
- Training / Daily Riding: Good
- Not Recommended For: Not recommended for road racing or high-speed aero events.
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- Frame Compatibility: Designed for 32" (696mm BSD) wheel size, compatible with frames and forks that accommodate 32" MTB wheels. For 29+ setups, verify clearance.
- Tire Type: Tubeless-ready, hookless, compatible with tubeless and standard tires with inner tubes.
- Tire Width Range: 2.3" – 2.8"
- Brake Standard: Disc brake only (rotor and caliper not included).
- Drivetrain: N/A – rim only, compatible with any drivetrain via hub selection.
- Rotor Standard: Compatible with 6-bolt or centerlock rotors depending on hub used (not included).
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|---|---|---|---|---|---|---|---|
| 32er Asymmetric | — | — | — | 350g / 450g | 30mm | 30mm | see store |
| M30 | — | — | — | 380g | 30mm | 30mm | ~$400 |
| 3Zero Moto | — | — | — | 450g | 30mm | 30mm | ~$350 |
| Control | — | — | — | 420g | 30mm | 30mm | ~$300 |
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What is the recommended tubeless setup for the BOLA 32er carbon rim?
Use a tubeless-compatible tire and sealant, with 2.3-2.8" tires. Ensure the rim tape is properly installed, then mount the tire and inflate to a seating pressure (around 60-80 psi) to set the bead, then reduce to your desired riding pressure (typically 20-35 psi for trail/enduro). The hookless design allows lower pressures without pinch flats.
Which tire widths are compatible with this rim?
The rim has a 30mm inner width, designed for 2.3-2.8" tires. It provides optimal tire support and stability for these sizes, accommodating both narrower and wider options within that range.
How much weight does the superlight layup save compared to the standard?
The superlight layup weighs 350g, while the standard is 450g, saving 100g per rim. This reduces rotating mass, improving acceleration, but the standard layup is slightly more robust for aggressive riding.
Can I build this rim with custom spoke counts and hubs?
Yes, BOLA offers custom build options for spoke counts and hubs. You can order the rim as a standalone and have it built to your specifications, or choose from pre-built wheelsets. Contact BOLA for OEM and custom builder inquiries.
How do I maintain and inspect the carbon rim for damage?
Regularly check for cracks, delamination, or impact damage. Use a coin tap test or feel for soft spots. Clean with mild soap and water, avoid harsh chemicals. If you hit a severe impact, inspect the rim immediately. The rim has a 3-year warranty against structural defects, but normal wear and crash damage are not covered.
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