Bola 700C 50mm Asymmetric Carbon Tubular Rim | 28mm Wide
Bola 700C 50mm Asymmetric Carbon Tubular Rim | 28mm Wide
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The Bola 700C 50mm carbon tubular rim - a light 28mm-wide U-shape glued-tyre race rim, T700/T800 carbon, for aero road and climbing race builds.
The classic race tubular, renewed: the Bola 50mm tubular is the do-everything glue-tire rim - aero enough for flats, light enough for climbs. Fifty millimetres of T700/T800 carbon, 28mm wide, sold rim-only.
Buying Guide.
Weight tier - Superlight ~350g: the stage-racer's pick - lightest end for climbs while keeping 50mm of aero.
Weight tier - Normal ~375g: the durable choice - a touch more layup for a season of race days.
Max rider weight: rated to 120kg - check rider + gear before ordering.
Same-depth series: the 50mm road/gravel rim and 50mm offset tubeless are the tubeless alternatives if you do not want to glue.
Adjacent depth: the 45mm tubular climbs better; the 55mm tubular goes deeper.
Target Audience & Usage Notes.
Target audience.: Road racers and stage racers who ride tubulars.
Rim-only.
Glue your own tyres; use carbon-specific rim-brake pads; respect 145 psi and 120kg.
Not for riders unwilling to glue.
The Ride That Awaits.
Cement a 25-28mm tubular, lace to a lightweight race hub, and feel the stage unfold: 50mm of aero on the flat, 350g spinning up the climb, the glued tyre lending every steer its edge. This is the wheelset you build for stage racing. Free shipping, a 3-year rim warranty and crash-replacement discount.
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- Wheelset weight (+/-2% tolerance, excluding rim tape and valves): Superlight 350g / Normal 375g (+/-15g)
- Rim depth: 50mm
- External width: 28mm
- Internal width: 28mm (tubular bed)
- ERD: 539mm
- Spoke Holes: 20/24
- Tubeless: Tubular (glued)
- Hooked/Hookless: Hooked tubular bed
- Max Tire Pressure: 145 psi (hooked)
- Max System Weight: 120kg
- Material: T700/T800 Toray carbon
- Brake Type: Rim brake (carbon-specific pads)
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- Delivery vs Price: Factory-direct at $310 per rim (roughly half the cost of a single branded rim), but overseas dispatch takes 7-20 business days via FedEx/UPS/DPD Economy. Comparable Zipp 404 Firecrest ~$2,300-$1,600+ each.
- Aero vs Climbing: 50mm is the classic balanced tubular depth - aero on flats, 350g Superlight light enough for rolling climbs.
- Weight vs Durability: 350g Superlight is race-only; Normal 375g adds layup margin.
- Rim-only Build: Hub, spokes and glue sold separately; spoke length from ERD 539mm.
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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 / Roundness: <0.25mm / <28mm (tubular bed) (internal QC)
- Max Spoke Tension: >300kg (internal QC)
- Radial / Lateral Stiffness: 90-110 N/mm radial; >=8 N/mm lateral (internal lab)
- Dynamic Balance: <Superlight 350g / Normal 375g (+/-15g) (internal QC)
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- Road Racing Builds: 2026 peloton standard is 28-30mm tubeless on wide rims (TdF 2026 avg ≈30mm); 50mm section suits 40+ km/h racing.
- Gran Fondo / Endurance: Modern 2026 frames (Propel, SuperSix, S5) design around 30-32mm clearance; 21mm inner bed pairs 25-32mm tubeless per ETRTO 2026 guidance.
- Wheel Building: Custom road builds with disc or rim hubs; UD carbon layup options for weight-conscious or durable builds.
- Weight Tier Selection: Offered in weight tiers (120kg); lighter for climbing, heavier for training and impact margin.
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- Frame: 700C (ISO 622) road frames with rim brakes
- Tire Type: Tubular (glued)
- Tire Width: 25-32mm tubular
- Valve: Presta (tubular valve)
- Brake: Rim brake - use carbon-specific pads
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| 700C Carbon Tubular Rim 50mm 28mm | - | - | - | Superlight 350g / Normal 375g (+/-15g) | 50mm | 28mm (tubular bed) | $310.00 |
| Model A | - | - | - | ~330g | 58mm | 24mm | ~$700 |
| Model B | - | - | - | ~350g F/420g R | 48mm | 24mm | ~$1,500 |
| Model C | - | - | - | ~370g | 49/55mm | ~25mm | ~$750 |
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What is the Bola 50mm Tubular Rim and what is included?
A single bare carbon rim, sold rim-only with no hub, spokes, nipples or tape - built to your choice of components or used as a single-rim replacement.
How do I mount a tubular?
Use tubular cement or tape and glue the tyre; inflate to 145 psi. Tubulars require a glue process.
What tyre sizes fit?
25-32mm tubular; 25-28mm is the classic race choice.
Is 50mm a good all-round race depth?
Yes - it balances aero and climbing better than 55-60mm for mixed-terrain racing.
What is the ERD?
ERD 539mm; 20/24 holes.
How long is shipping and what warranty applies?
Free shipping, VAT included in EU & USA. 3-year rim warranty against manufacturing defects with crash-replacement discount. Dispatch 1-3 business days; FedEx/UPS/DPD Economy delivers in 7-20 business days.
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