700c 34mm Carbon Disc Rim — Wave Profile 45mm/50mm | Bola
700c 34mm Carbon Disc Rim — Wave Profile 45mm/50mm | Bola
Regular price
$310.00 USD
Regular price
$360.00 USD
Sale price
$310.00 USD
Free shipping | VAT included in EU & USA
Quantity
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A hooked-wave disc-brake carbon rim with 34/31mm outer, 25mm inner width, 45/50mm depth options, and four weight tiers 385–460g.
Do-It-All Disc-Road Rim
The BOLA 34mm wide carbon rim balances low weight, predictable handling and tubeless compatibility. Choose 45mm depth for crosswind stability or 50mm for improved aero, with four weight grades to tune rotational mass.
Buying Guide.
Weight tier - Extreme Light ~385g: lightest, for smooth roads.
Weight tier - Ultralight ~405g: race builds.
Weight tier - Superlight ~425g: balanced all-round.
Weight tier - Standard ~460g: larger riders and rough roads.
Depth - choose the shallower wave for crosswind stability, the deeper wave for flat-course aero.
Internal width - 25mm: covers 29-44mm tires; a do-it-all bed between road and light gravel.
Target Audience & Usage Notes.
Road, gravel and endurance disc-brake riders.
Not for heavy downhill or extreme off-road; riders over 120kg should avoid lighter grades.
The Ride That Awaits.
Point it at a mixed-surface century and feel the hooked-wave bed balance aero and comfort in the same breath - 29-44mm tires at low pressure, the offset wheel true and calm under every effort. It is the do-it-all that never complains. Free shipping and a 3-year warranty mean you can plan the ride and trust the wheel.
Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 45mm/50mm
Bead Type: Hooked
Inner Width: 25mm
Outer Width: 34mm/31mm
ERD (Effective Rim Diameter): 549
Weight Tier: Standard 460g, Superlight 425g, Ultralight 405g, Extreme Light 385g
Trade-offs & Considerations
Aero vs Crosswind: The 50mm wave profile saves about 4.5W versus a 35mm rim at 40km/h; at 10° yaw the 34mm outer width keeps steering predictable on exposed descents, at the cost of a higher crosswind signature than a 40mm rim. The 45mm drill option trades about 1W of aero for calmer side-wind handling.
Weight vs Stiffness: The Extreme Light tier (385g) saves about 75g versus the Standard tier (460g) at the same 50mm depth (±5g); lateral stiffness holds within 3% across tiers, so the lightest build keeps the same rim structure.
Tire-Type Trade-off: The hooked bead accepts clincher and tubeless tyres from about 28c to 50c and supports higher pressure than hookless designs; tubeless cuts rolling resistance but needs tape, valve and sealant to seal the bed.
Sourcing & Delivery Trade-off: Stock drilling ships in 1–3 business days at $310; custom spoke-hole 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: >60J (Higher than ISO 4210-7)
Flatness: <0.25mm (internal QC)
Roundness: <0.3mm (internal QC)
Max Spoke Tension: >350 kgf (internal QC, spoke breaking tension)
Ultimate Strength: >300 kgf (internal QC, static spoke-hole point load)
Dynamic Equilibrium: <3g (internal QC)
Radial Stiffness: 90–110 N/mm (internal lab)
Lateral Stiffness: ≥8N/mm
Max System Weight: 120kgs
Recommended Use Cases
Gravel Racing: Excellent. Designed for mixed-surface racing with wide tire support and tubeless compatibility.
Bikepacking: Good. The wide internal width and durable construction handle loaded touring, though lighter weight grades offer less structural margin for heavy loads.
Gran Fondo / Endurance: Excellent. 25mm internal width and compliant ride make it ideal for long distances.
Road Racing: Good. 45-50mm depth provides aero benefits while still being manageable in crosswinds.
Training / Daily Riding: Excellent. Tubeless setup reduces flats, and multiple weight grades allow tuning for durability.
Not Recommended For: Heavy downhill or extreme off-road use; riders over 120kg should avoid lighter grades.
Compatibility
Frame Compatibility: Disc brake road/gravel frames with 700c wheels (ISO 622)
Tire Type: Tubeless and clincher
Tire Width Range: 29-44mm
Brake Standard: Disc brake only
Drivetrain: All drivetrains (Shimano, SRAM, Campagnolo) - hub dependent
Rotor Standard: Hub-dependent (Center Lock or 6-bolt)
How It Compares
| Model | Weight | Depth | Width | Price |
|---|---|---|---|---|
| 700C 45/50mm Rim 34/31mm | Standard 460g, Superlight 425g, Ultralight 405g, Extreme Light 385g | 45mm/50mm | 34mm | See store |
| Model A | ~430g | 50mm | 28mm | $1,399 |
| Model B | ~430g | 50mm | 27mm | $249 |
| Model C | ~420g | 50mm | 30mm | $389 |
FAQ
Which tyres fit on the 25mm inner rim, and what pressure suits me?
The 25mm inner width covers 28mm–50mm tyres — road 28–32mm, gravel 35–45mm and all-road; it is a hooked bed, so clincher and tubeless both mount directly.
How do I work out the right spoke length for this rim?
Contact Bola for the exact ERD before ordering spokes. Once we confirm the figure, plug it into a known calculator (Sapim / DT) and add the recommended correction.
What is the maximum spoke tension I can run on this rim?
Drive-side / disc-side max tension is 130–140 kgf, with the non-drive side adapted to match; spoke holes are locally reinforced inside the carbon layup to prevent pull-out cracking.
How does this deep rim handle crosswinds — does the wave profile really help?
The rim uses a wave-profile outer width that breaks lateral air vortices at 10°–15° yaw, cutting steering torque by about 25% versus a straight-profile rim of the same depth. High-speed descents stay planted.
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, 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
