• BOLA 88mm Aero Carbon Rim 700C – Hooked Tubeless, 27mm/20mm, TT & Triathlon（副本）
  • BOLA 88mm Aero Carbon Rim 700C – Hooked Tubeless, 27mm/20mm, TT & Triathlon（副本）
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Bola 700C 30mm Carbon Tubeless Road Rim | 28mm Wide

Bola 700C 30mm Carbon Tubeless Road Rim | 28mm Wide

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

The Bola 700C 30mm U-shape carbon tubeless rim - a shallow, light 28mm-wide disc-brake climbing rim with hooked or hookless bed.

Designed for the rider who demands a fast, stable wheel platform: the Bola 30mm U-shape rim blends modest aero with tubeless practicality and a featherweight build. Thirty millimetres of carbon, 28mm wide, sold rim-only.

Buying Guide.

Weight tier - Extreme Light ~315g: the shallow climber's pick - lightest and calmest in the family for riders who climb more than they time-trial.

Weight tier - Ultralight ~335g: the balanced middle - lively on climbs, tough enough to train.

Weight tier - Superlight ~360g: the steady build - impact margin for windy training days.

Weight tier - Standard ~400g: the durable daily choice for heavier riders and rough roads.

Max rider weight: rated to 100kg - check rider + gear before ordering.

Same-depth series: the 30mm asymmetric balances disc spoke tension with an offset bed.

Adjacent depth: the 35mm U-shape adds aero; the 40mm U-shape goes deeper.

Target Audience & Usage Notes.

Target audience.: Climbers and riders in windy terrain.

Rim-only.

Hookless requires ETRTO-certified tyres; respect 90 psi and 100kg.

Not for flat TT maximum speed.

The Ride That Awaits.

Build it around a climbing hub, seat a 28-32c tubeless, and the 30mm U-profile accelerates like a held breath: utterly calm in the wind, eager on every rise, the shallow light wheel for the rider who lives to climb - your kind of ride. Order today, climb tomorrow. Free shipping, a 3-year rim warranty and crash-replacement discount.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 30mm
Bead Type: Hooked
Inner Width: 21mm / 23mm
Outer Width: 28mm
ERD (Effective Rim Diameter): 578
Weight Tier: Standard (400±15g), Super Light (360±10g), Ultra Light (335±10g), Extreme Light (315±10g)
Trade-offs & Considerations
Aero vs Crosswind: At 30mm depth this is the light, calm option: it costs about 2.5W versus a 40mm rim at 40km/h, but at 10° yaw the shallow 30mm section gives the lightest, most predictable steering on crosswind descents.
Weight vs Stiffness: The Extreme Light tier (315g) saves 85g versus the Standard tier (400g) (±5g); lateral stiffness holds within 3% across tiers on the same 30mm lay-up.
Tire-Type Trade-off: The hooked 21mm version suits 25–32c tyres and the 23mm hookless version suits 28–35c ETRTO tyres; tubeless cuts rolling resistance and pinch flats, and the bed arrives factory-sealed.
Sourcing & Delivery Trade-off: Stock drilling ships in 1–3 business days at $310; custom nipple angles, valve hole 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: >100 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: N/A
Recommended Use Cases
Climbing Build: At 30mm depth the Extreme Light 315g tier builds the lightest possible climbing rim; it costs about 2.5W versus a 40mm rim but gives the calmest steering on crosswind descents.
Road Training / All-Rounder Build: The 400g Standard tier adds durability for daily training; the hooked 21mm bed takes 25-32c clincher or tubeless tyres.
All-Road Build: The hookless 23mm option runs 28-35c ETRTO-certified tubeless tyres for wider, lower-pressure riding on mixed surfaces.
Replacement Rim: Sold as a bare rim with no hub, spokes, nipples or tape - a direct replacement for a damaged 30mm wheel, or your base for a custom build.
Not Recommended For: Aero race stages - 30mm is the climbing and training choice, not a 50mm aero rim.
Compatibility
Frame Compatibility: Standard road frames with disc brake mounts (flat mount or post mount depending on build).
Tire Type: Clincher, tubeless, and hookless compatible (ETRTO-approved for hookless).
Tire Width Range: 25c-38c for hooked, 27c-38c for hookless.
Brake Standard: Disc only (center-lock or 6-bolt rotor configuration specified at build).
Drivetrain: Compatible with standard road drivetrains (Shimano, SRAM, Campagnolo) via hub choice.
Rotor Standard: Center-lock or 6-bolt (specified at build).
How It Compares
ModelWeightDepthWidthPrice
700C 30mm Rim 28mm Standard (400±15g), Super Light (360±10g), Ultra Light (335±10g), Extreme Light (315±10g) 30mm 28mm 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.
What tyres can I mount on this rim, and what pressure should I run?
The hooked 21mm inner width suits 25c–32c tyres, while the hookless 23mm version suits 28c–35c with ETRTO-rated tyres.
Is this sold as a complete wheelset, or as a bare rim I build myself?
This is a bare rim only — no hub, spokes, nipples or tape included. You choose the hub and spokes and build it to your spec, or use it as a direct replacement for a damaged rim.
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
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