Bola PRO 40G 700C Carbon Spokes Gravel Wheelset
Bola PRO 40G 700C Carbon Spokes Gravel Wheelset
Regular price
$999.00 USD
Regular price
$1,150.00 USD
Sale price
$999.00 USD
Free shipping | VAT included in EU & USA
Quantity
Couldn't load pickup availability
The Bola PRO 40G is a 40mm T1000 carbon gravel disc wheelset with foil carbon spokes and a ceramic BL240 hub, 1170g, for lightweight mixed-terrain speed.
The climber's gravel blade: 40mm, 1170g. The Bola PRO 40G is the lightweight cadet of the PRO family — a 40mm T1000 rim, wide 30-36mm body and foil carbon spokes yielding a remarkable 1170g per set, built for gravel races where the road goes up, then sideways, then up again.
Buying Guide.
Internal width - 24mm: 28-32c at 70-85 PSI for tarmac.
Internal width - 26mm: 32-38c at 55-70 PSI for all-road.
Internal width - 30mm: 35-50c at 30-45 PSI for gravel.
Max rider weight: rated to 105kg - the lowest in PRO; heavier riders should step up to the PRO 45G.
Same-depth series: the EXP 40R (~$999) uses a genuine DT Swiss 240s hub at a touch more weight; the PRO 40G is the lightest, climbing-oriented pick.
Adjacent depth: the PRO 45G above adds aero - choose the 40G for elevation, the 45G for speed on rolling ground.
Target Audience & Usage Notes.
Disc-brake gravel and all-road frames, 12x100/12x142 or QR.
Max system weight 105kg (lower than some peers); heavier riders should consider the PRO 45G or EXP series.
Not for extreme off-road.
The Ride That Awaits.
The silence is the tell - the ceramic hub spins without a murmur, the shallow rim floats over rolling ground, and the climb you feared becomes the stretch you seek. Stand and it rises; relax and it glides. Free shipping and a 3-year rim / 2-year wheelset warranty mean the hills are already yours.
Specifications
Size: 700c
Carbon Grade: Toray T1000 ultra-high-modulus carbon fiber
Rim Depth: 40mm
Bead Type: Hooked / Hookless
Inner Rim Width: 24/26/30mm
Outer Rim Width: 30-36mm
Hub Model: BL 240 54T
Spoke: foil carbon, 20/20, 2x, Straight pull
Bearing Type: Ceramic bearing
Complete Wheelset Weight: 1170g (tape & valve excluded, ±2% tolerance)
Accessories: Tape, valve and spare spokes
Trade-offs & Considerations
Aero vs Crosswind: The 40mm depth saves about 3.0W versus a 30mm gravel rim at 40km/h and stays calm at 10° yaw — the most crosswind-friendly gravel depth in the range; the 50G adds about 2.0W more aero for noticeably more side gust.
Weight vs Stiffness: T1000 with foil carbon spokes hits 1170g, about 130g lighter than a steel-spoke 40mm gravel build (±5g), lateral stiffness within 3%; ceramic bearings shave about 1.5W of friction versus steel.
Tire-Type Trade-off: The hooked bed accepts clincher and tubeless from 30c to 62c; the 24/26/30mm internal options favour 40–50c gravel at 30–45 PSI, and hookless-rated tyres cap around 72 PSI.
Sourcing & Delivery Trade-off: Stock builds ship in 1–3 business days at $999; custom decals or lacing add 7–15 business days and roughly a $100–150 premium.
Config Ladder: This set already runs ceramic bearings and foil carbon spokes; the main ladder is the internal width (24→30mm, about +5g for wider gravel volume) and the hub (BL 240 → DT Swiss 240 for global serviceability, roughly +$200 and +5 days).
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: 98–114 N/mm (internal lab)
Lateral Stiffness: 30–38 N/mm
Spoke Tension (Drive Side): >130 kgf (factory assembly tension)
Max System Weight: 105kg
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 24/26/30mm beds with 35-50mm tubeless at 35-50 PSI.
Mixed-Surface Adventure: Eurobike 2026 trend toward all-road and 32er builds; this 40mm 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, 28-62mm
Frame: 700C gravel / all-road disc frame
How It Compares
| Model | Hub | Spoke | Bearing | Weight | Depth | Width | Price |
|---|---|---|---|---|---|---|---|
| PRO 40G | 54T ratchet, 6.7° engagement | Foil carbon, 20/20, 2x straight-pull | Ceramic | 1170g | 40mm | 30–36mm | 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 | Stainless | Steel | ~1560g | 40mm | 28mm | $749 |
FAQ
Can a damaged carbon spoke be replaced at a local bike shop?
Yes. The spokes use a mechanical two-piece lock-up design (not a 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.
Will carbon spokes snap suddenly in crosswinds or under lateral load?
Carbon spokes deliver ~3,800N tensile strength (above the ~3,000N of top steel spokes) with ~30% higher lateral stiffness. Potholes, sprinting out of the saddle and everyday riding carry no metal-fatigue fracture risk.
If the wheel is 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.
Which tyres should I run, and at what pressure?
On the 24mm bed run 28-32c road at 70-85 PSI; on the 30mm bed run 35-48c gravel at 30-45 PSI. The bed accepts 28-62mm.
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
