Bola PRO 50G Carbon Spoke Gravel Wheelset Disc Aero
Bola PRO 50G Carbon Spoke Gravel Wheelset Disc Aero
Regular price
$999.00 USD
Regular price
$1,150.00 USD
Sale price
$999.00 USD
Free shipping | VAT included in EU & USA
Quantity
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The Bola PRO 50G is a 50mm T1000 wide-platform carbon gravel disc wheelset with foil carbon spokes and a ceramic BL240 hub, for aero gravel speed.
Wide-platform aero for the gravel frontier: the Bola PRO 50G wraps a 50mm T1000 rim in a wide 34-38mm profile, pairing foil carbon spokes with a BL240 54T ceramic hub. Built for riders who chase speed on packed gravel and fast all-road surfaces.
Buying Guide.
Internal width - 28mm: 32-40c at 50-65 PSI for all-road and fast gravel.
Internal width - 30mm: 38-45c at 40-55 PSI for mixed gravel.
Internal width - 32mm: 40-50c at 30-45 PSI for rough gravel and aero gravel racing.
Max rider weight: rated to 120kg - check rider plus gear and frame clearance.
Same-depth series: the EXP 50G (~$999) uses a genuine DT Swiss 240s hub and weighs a touch more; the PRO 50G leans lighter with a ceramic hub.
Adjacent depth: the PRO 45G and PRO 40G below favor climbing and crosswind calm - choose the 50G for raw gravel aero.
Target Audience & Usage Notes.
Disc-brake gravel and road frames with thru-axle (12x100/12x142) or QR.
Max system weight 120kg; wide bed demands frame clearance for 65mm+ tires.
Not for heavy trail/mountain biking.
The Ride That Awaits.
When the fire road opens into a straight, the rim comes alive - you ease to low pressure and the wide platform cradles the rough, then surge and the ceramic hub spins like a thought. Fast, calm, unhurried. Free shipping and a 3-year rim / 2-year wheelset warranty mean you should be on it already.
Specifications
Size: 700c
Carbon Grade: Toray T1000 ultra-high-modulus carbon fiber
Rim Depth: 50mm
Bead Type: Hooked / Hookless
Inner Rim Width: 28/30/32mm
Outer Rim Width: 34-38mm
Hub Model: BL 240 54T
Spoke: foil carbon, 20/20, 2x, Straight pull
Bearing Type: Ceramic bearing
Complete Wheelset Weight: 1230g (tape & valve excluded, ±2% tolerance)
Accessories: Tape, valve and spare spokes
Trade-offs & Considerations
Aero vs Crosswind: 50mm depth saves about 4.5W versus a 35mm wheel at 40km/h, but crosswind control drops noticeably at 10° yaw on open gravel sections; the 45G variant trades ~2.5W of aero for calmer side-wind handling.
Weight vs Stiffness: T1000 carbon saves about 95g versus a T800 build at the same 50mm depth (±5g), while lateral stiffness stays within 3%; impact resistance remains compliant with ISO 4210-7 reference levels.
Tire-Type Trade-off: Hooked bed accepts clincher and tubeless tyres from 28c to 68c; hookless-rated tyres cap around 72 PSI, so the 28/30/32mm internal options trade max pressure for wider gravel volume and lower rolling resistance.
Sourcing & Delivery Trade-off: Stock build ships in 1–3 business days at $999; custom decal or lacing adds 7–15 business days and roughly a $100–150 premium, which is the main cost of a fully personalised set.
Config Ladder: Moving from steel to ceramic bearings cuts about 1.5W of hub friction for around +$120; swapping to foil carbon spokes saves about 80g versus a steel-spoke build for around +$180 and adds about 5 days to build time.
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: 122–136 N/mm (internal lab)
Lateral Stiffness: 42–51 N/mm
Spoke Tension (Drive Side): >130 kgf (factory assembly tension)
Max System Weight: 120kg
Recommended Use Cases
Gravel Racing: Fastest-growing US/EU segment — NA holds ≈40% of the global gravel market (2026); Unbound-style endurance events reward wide 28/30/32mm beds with 35-50mm tubeless at 35-50 PSI.
Mixed-Surface Adventure: Eurobike 2026 trend toward all-road and 32er builds; this 50mm gravel platform transitions from tarmac to dirt without swapping wheels.
Bikepacking / Expedition: Eurobike/Cyclingworld Europe 2026 highlights bikepacking integration; wide beds carry 40-50mm tyres at low pressure for loaded comfort on rough routes.
Compatibility
Brake Standard: Disc brake, Center Lock rotor (140/160mm)
Axle: Front 12x100mm thru-axle; Rear 12x142mm thru-axle (QR with adapters)
Freehub: Shimano HG / SRAM XDR (select at checkout)
Tire: Tubeless-ready clincher, 30-68c
Frame: 700C gravel / road disc frame; verify 65mm+ clearance
How It Compares
| Model | Hub | Spoke | Bearing | Weight | Depth | Width | Price |
|---|---|---|---|---|---|---|---|
| PRO 50G | 54T ratchet, 6.7° engagement | Foil carbon, 20/20, 2x straight-pull | Ceramic | 1230g | 50mm | 34–38mm | See store |
| Model A | 66T ratchet, 5.5° engagement | Sapim CX-Ray | Steel cartridge | ~1500g | 40mm | 27mm | $2,300 |
| Model B | 3-pawl, 24T, 15° engagement | Pillar 1420 | Steel | ~1590g | 44mm | 25mm | $1,099 |
| Model C | 36T ratchet, 10° engagement | Carbon | Ceramic | ~1295g | 45mm | 30mm | $1,499 |
FAQ
Which tyres can I run on the 28/30/32mm internal widths — and what pressure should I use?
The 28/30/32mm internal width options accept tyres from 30c to 68c. Sweet spots: 40–50c gravel at 30–45 PSI and 32–40c road at 50–65 PSI.
What is the maximum system weight?
120kg. This covers rider plus luggage and applies to the 28/30/32mm builds with hookless-rated tubeless tyres.
Can a damaged carbon spoke be replaced at a local bike shop?
Yes. The spokes use a mechanical two-piece lock-up design (not bonded one-piece), and spare carbon spokes ship free with the wheelset. Any shop mechanic with a standard truing stand can swap a single spoke in about 10 minutes — no factory return needed.
If the wheels are badly damaged in extreme riding, am I covered?
Yes — beyond the 2-year factory warranty, you get lifetime 30% Crash Replacement: a discounted replacement wheel without paying full price.
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: 2 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
