• 29er Asymmetric Carbon MTB Rim | 30mm Height, 30mm Inner Width | Freeride & Enduro Bola
  • 29er Asymmetric Carbon MTB Rim | 30mm Height, 30mm Inner Width | Freeride & Enduro Bola
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700c Tubeless Carbon Road Rim 40mm — 375-430g | Bola

700c Tubeless Carbon Road Rim 40mm — 375-430g | Bola

$310.00 USD
$350.00 USD $310.00 USD
Sale Sold out
Free shipping  |  VAT included in EU & USA
Weave
Spoke QTY
Weight

The Bola 700c offset carbon tubeless road rim — a 40mm-deep, 30mm-wide all-rounder (375-430g) built for climbing, racing and endurance.

The versatile 40: a balanced V-profile that pairs aero composure with crosswind calm, offered in verified layups from 375g ultralight to 430g standard.

Buying Guide.

Weight tier - Ultralight ~375g: the climb build - for a balanced 40mm rim, choose it when hills define the ride.

Weight tier - Superlight ~395g: the race-and-training middle.

Weight tier - Standard ~430g: the Light-grade durability build for rougher training and larger riders.

Internal width - Hooked 24mm: a 27-42mm race-tire platform with rim-brake compatibility - choose it for mixed brake standards and tube options.

Internal width - Hookless 25mm: a 29-44mm comfort tubeless platform, disc only - choose it for the modern wide-tire setup.

Adjacent depth: this sits between the 35mm and 45mm road rims ($310) - shallower for crosswind calm, deeper for more aero.

Rated to a 110kg rider weight.

Target Audience & Usage Notes.

Climbing, road racing, gran fondo and training — a balanced all-rounder.

Max rider weight 110kg.

The Ride That Awaits.

Stand on the pedals and the 40mm section eats the flat, then eases into the climb without making you suffer - the all-rounder that does both. It holds a line through fast group rides and tracks cleanly on descents, tubeless-ready for modern wide tires. Choose bead, width and layup; the 3-year rim warranty keeps the miles carefree.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 40mm
Bead Type: Hooked
Inner Width: 24mm(hook)/25mm(hookless)
Outer Width: 30mm
ERD (Effective Rim Diameter): 558
Weight Tier: standard 430g, superlight 395g, ultralight 375g
Trade-offs & Considerations
Aero vs Crosswind: The 40mm depth saves about 3.0W versus a 30mm rim at 40km/h; at 10° yaw the 30mm outer width keeps handling calmer than a 50mm rim, trading peak aero for easier crosswind manners.
Weight vs Stiffness: The Ultralight tier (375g) saves about 55g versus the Standard tier (430g) at the same 40mm depth (±5g); the Superlight tier sits at 395g, and lateral stiffness holds within 3% across tiers.
Tire-Type Trade-off: The hooked bead accepts 25–32c clincher or tubeless tires across the 24mm hooked / 25mm hookless internal bed; tubeless cuts rolling resistance and pinch flats but needs tape, valve and sealant.
Sourcing & Delivery Trade-off: Stock drilling ships in 1–3 business days at $310; a custom spoke count or decals add 7–15 business days and roughly a $40–80 premium.
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: 110kgs
Recommended Use Cases
Climbing / Hill Repeats: Excellent
Gran Fondo / Endurance: Good
Road Racing: Good
Sprinting / Criterium: Good
Training / Daily Riding: Excellent
Not Recommended For: Not recommended
Compatibility
Frame Compatibility: Compatible with road bike frames with standard 700c wheel clearance (typically 25mm or wider tyre clearance).
Tire Type: Tubeless or clincher (with hooked or hookless bead option)
Tire Width Range: 27-42mm with 24mm hooked inner width, 29-44mm with 25mm hookless inner width
Brake Standard: Rim brake (hooked) or disc brake (hookless)
How It Compares
ModelWeightDepthWidthPrice
700C 40mm Rim 30mm standard 430g, superlight 395g, ultralight 375g 40mm 30mm See store
Model A ~430g 50mm 28mm $1,399
Model B ~430g 50mm 27mm $249
Model C ~420g 50mm 30mm $389
FAQ
Do I get a bare rim here, or is it built up with a hub and spokes?
It's a bare carbon rim — no hub, spokes or nipples. Take it to any wheel builder to lace it to your own hub; we can also supply a built wheel on request.
Can I set this up tubeless straight away, or do I have to convert it first?
Yes — it's a tubeless-ready hooked rim. Fit tubeless tape and a valve, then seal standard road tubeless tyres; no conversion kit needed.
What spoke drillings are available, and which brake type is this rim rated for?
Spoke drillings and brake rating depend on the build option, selectable at checkout. If you plan to lace your own wheel, confirm the drilling and brake type with Bola before ordering so the rim matches your hub and frame.
What spoke tension can I safely build to — will the holes pull out of the carbon?
Drive-side / disc-side maximum tension is 130–140 kgf, with the non-drive side adapted to match; the spoke holes are locally reinforced inside the carbon layup to prevent pull-out cracking.
Will I really pay no customs or VAT for delivery to the US and EU?
Yes. The Economy channel ships DDP — duties and VAT are fully prepaid by us, cleared in advance, and delivered to your door with no extra payment to customs or the courier.
Warranty & Shipping
Warranty Period: 3 years
Crash Replacement: 30% discount on replacement parts
Processing Time: In stock: 1–3 business days · Out of stock or custom order: 7–15 business days
Shipping method: FedEx/UPS/DPD/EMS Economy (free with duties & VAT included in USA & EU) · Expedited option available
Estimated Delivery: Economy 7–20 business days · Expedited 3–7 business days, customs clearance excluded
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