700C Carbon Road Rim 25mm wide 40/45mm wave | Bola
700C Carbon Road Rim 25mm wide 40/45mm wave | Bola
Regular price
$310.00 USD
Regular price
$350.00 USD
Sale price
$310.00 USD
Shipping calculated at checkout.
Quantity
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Size: 700C
A disc-brake carbon road rim with 34/31mm outer, 25mm inner width, 40/45mm wave depth options, and four weight tiers 375–450g.
Race-Ready Disc Road Rim
The BOLA 700c carbon road rim pairs a 25mm inner width with 40mm or 45mm wave profile depths. Disc-brake design removes brake-track heat concerns, while the 25mm inner width supports 29–44mm road tires for comfort and rolling efficiency.
Buying Guide.
Weight tier - Extreme Light ~375g: smooth-road climbers.
Weight tier - Ultralight ~395g: race builds.
Weight tier - Superlight ~420g: gran fondo middle.
Weight tier - Standard ~450g: larger riders and durability.
Depth - choose the shallower wave for crosswind calm, or the deeper wave for flat-course aero.
Internal width - narrow bed: built for 28-32mm road tires; it is not a wide gravel rim.
Target Audience & Usage Notes.
Road racers, gran fondo riders, and OEM custom wheelset builders on disc-brake frames.
Not for off-road or gravel riding.
The Ride That Awaits.
Clamp it on, bed the tires, and you feel the wave section cut cleanly through the air while the road tires float over the tarmac - stiff, direct, uncomplaining on a long road. It rewards the steady grinder. Rated to a real rider weight and backed by a 3-year warranty with free shipping.
Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 40mm&45mm
Bead Type: Hooked
Inner Width: 25mm
Outer Width: 34mm(body)/31mm(edge)
ERD (Effective Rim Diameter): 549
Weight Tier: Standard (≈450g), Superlight (≈420g), Ultralight (≈395g), Extreme Light (≈375g)
Trade-offs & Considerations
Aero vs Crosswind: The wave 40/45mm profile saves about 3.5W versus a 32mm rim at 40km/h; the 34mm body width smooths airflow at 10° yaw, giving a stable feel on descents in exchange for a deeper section than a 30mm climbing rim.
Weight vs Stiffness: Standard (about 450g) to Extreme Light (about 375g) saves about 75g per rim (±5g); lateral stiffness holds within 3% across tiers on the same wave lay-up.
Tire-Type Trade-off: The 25mm hooked inner width is optimised for 28–32mm tubeless road tyres; tubeless lowers rolling resistance and pinch-flat risk but needs tape, valve and sealant.
Sourcing & Delivery Trade-off: Stock drilling ships in 1–3 business days at $310; custom drilling, nipple angles 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: >200 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: 105kgs
Recommended Use Cases
Road Racing Build: The wave 40/45mm section saves about 3.5W versus a 32mm rim at 40 km/h; the 34mm body width smooths airflow at 10 degrees yaw for a stable race build.
Criterium Build: A hooked 25mm internal bed optimised for 28-32mm tubeless road tyres, with the Extreme Light 375g tier keeping a crit build light for repeated surges.
Gran Fondo Build: Disc-only frames with 29-44mm clearance; the wave profile cuts steering torque about 25% versus a straight rim of the same depth on long rolling fondo days.
Custom Build or Replacement: ERD 549; stock drilling ships in 1-3 business days, custom drilling, nipple angles or decals in 7-15 days - also a direct replacement for a damaged 40/45mm rim.
Not Recommended For: Tyres under 28mm - the 25mm bed is optimised for 28-32mm - and rim-brake hubs, as this rim is disc only.
Compatibility
Frame Compatibility: Disc brake road frames with 700c and clearance for 29-44mm tires
Tire Type: Clincher or tubeless
Tire Width Range: 28–32mm
Brake Standard: Disc brake only
Drivetrain: N/A (rim only)
Rotor Standard: N/A (rim only)
How It Compares
| Model | Weight | Depth | Width | Price |
|---|---|---|---|---|
| 700C 40/45mm Rim 34/31mm | Standard (≈450g), Superlight (≈420g), Ultralight (≈395g), Extreme Light (≈375g) | 40–45mm | 31–34mm | See store |
| Corima MCC EVO 32 | 1445g | 32mm | 26mm external (internal N/D in workbook) | €3,690 |
| Mavic Cosmic SLR 32 | 1390g | 32mm | 21mm | $2,729 |
| Fulcrum Wind 40C | 1555g | 40mm | 17mm inner (ETRTO 17C) | €1,349 |
FAQ
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 is the maximum spoke tension for 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 wave-profile rim handle crosswinds — does the shape really help?
The 40/45mm builds use 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.
What tyres can I mount on this rim, and what pressure should I run?
The 25mm inner width is optimised for road tyres from 28mm to 32mm; tyres narrower than 28mm are not recommended.
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 within 1 year of the original purchase date
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
