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Bola ULT 45G Aero Carbon Disc Gravel Wheelset

Bola ULT 45G Aero Carbon Disc Gravel Wheelset

Regular price $698.00 USD
Regular price $800.00 USD Sale price $698.00 USD
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The Bola ULT 45G 700C Carbon Gravel Wheelset - a 45mm aero gravel set with a 26-30mm internal bed, Sapim CX-Ray spokes and TPI ceramic bearings, built in Toray T1000 carbon.

Take aero performance and mixed-surface versatility on every ride. The Bola ULT 45G pairs a 45mm rim with wide internal widths to run modern 28-52mm tubeless tires for fast road spins or confident gravel outings. T1000 UD carbon, BL1 hubs with TPI ceramic bearings, and Sapim CX-Ray spokes balance lightweight responsiveness with durable performance.

Buying Guide.

Internal width - 26mm: run a 35-40mm tire at 38-55 PSI tubeless for fast gravel and all-road.

Internal width - 28mm: cup a 40-45mm tire at 32-48 PSI for rough gravel.

Internal width - 30mm: settle a 45-50mm tire at 28-42 PSI on chunky tracks.

Max rider weight: rated to 110kg system - light-load gravel, not expedition cargo.

Same-depth series: the ELT 450W at $579 uses Pillar spokes, while the ULT 45R at $698 is the road-narrow version of the same hub-and-spoke package - choose this 45G for the ULT package in a gravel-wide bed.

Adjacent depth: within ULT gravel, the 35G is lighter for climbing and the 50G deeper for aero straights - this 45G is the balanced all-road choice.

Target Audience & Usage Notes.

For gravel racers, all-road riders, and mixed-surface enthusiasts wanting aero with wide-tire support.

Not for high-speed technical descents where crosswinds bite.

Requires a gravel/road disc frame.

Max system weight 110kg.

The Ride That Awaits.

The road start slips by on the aero rim, then the surface turns to dirt and the wide bed cups a 40mm tyre at low pressure - the bladed spokes and ceramic hub make acceleration feel scalpel-sharp over whoop and rut. One wheelset, every surface. Free shipping, VAT included, and a 24-month global warranty with crash-replacement cover mean you chase the rough with nothing held back.

Specifications
Size: 700c
Carbon Grade: Toray T1000 ultra-high-modulus carbon fiber
Rim Depth: 45mm
Bead Type: Hooked / Hookless
Inner Rim Width: 26mm / 28mm / 30mm options
Outer Rim Width: 32mm / 34mm / 36mm
Hub Model: BL 100 54T
Spoke: Sapim CX Ray, 24/24, 2x Straight pull
Bearing Type: TPI Ceramic bearing
Complete Wheelset Weight: 1260g (tape & valve excluded, ±2% tolerance)
Accessories: Tape, valve and spare spokes
Trade-offs & Considerations
Aero vs Crosswind: The 45mm gravel-aero depth saves about 3.0W versus a 35mm rim at 40km/h; at 10 degrees of yaw the wide 32-36mm rim is stable but catches side gusts.
Weight vs Stiffness: At about 1260g the T1000 layup and ceramic hub save roughly 110g versus a 1370g steel-hub SL 45G; lateral stiffness stays within 4%.
Tire-Type Trade-off: Tubeless clincher runs 35-50mm gravel tyres at low pressure for traction and pinch-flat resistance, but sealant needs topping up every 3-6 months.
Sourcing & Delivery Trade-off: Standard stock ships in 1-3 business days while a custom internal-width build takes 7-15; at about $698 it is well under a DT 42mm gravel set near $1,899.
Config Ladder: The BL100 54T TPI ceramic hub is standard; stepping down to the ELT-spec steel bearing and P1420 spokes saves about $120 but adds about 1.5W of friction; the internal bed is selectable at 26, 28 or 30mm.
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: 122–136 N/mm (internal lab)
Lateral Stiffness: 42–51 N/mm
Spoke Tension (Drive Side): >130 kgf (factory assembly tension)
Max System Weight: 110kg
Recommended Use Cases
Gravel Racing / Aero: The 45mm T800 section on a BL 100 54T ratchet hub (6.7 degrees engagement) is the aero gravel build, weighing about 1260g with Sapim CX-Ray spokes.
Gravel Gran Fondo: The wide 26-30mm internal beds run 28-50mm tubeless at low pressure for all-day comfort on rough gravel.
All-Road / Mixed-Surface: The 32-36mm outer width transitions from tarmac to dirt, and TPI ceramic bearings keep the spin smooth on long mixed rides.
Fast Gravel / Road-to-Dirt: At about 1260g the set climbs and accelerates willingly, suiting riders who push the pace on fast gravel routes and rolling mixed terrain.
Compatibility
Brake Standard: Disc brake, Center Lock rotor (140/160mm)
Axle: 12x100 / 12x142 thru-axle or QR
Freehub: HG / XDR / Micro-Spline / N3W (select at checkout)
Tire: Tubeless-ready clincher, 28-52mm
Frame: 700C gravel / all-road disc frames
How It Compares
ModelHubSpokeBearingWeightDepthWidthPrice
ULT 45G 54T ratchet, 6.7 degree engagement Sapim CX-Ray, 24/24, 2-cross Ceramic 1260g 45mm 32-36mm See store
Enve G23 ENVE Alloy / I9 steel 24F/24R Steel 1305g 25mm 23mm $2,550
Roval Terra CLX III Roval (DT 180) Roval carbon 21F/24R Ceramic (SINC) 1079g 25.5mm 27mm $1,399
Zipp 303 XPLR SW Zipp ZR1 Sapim CX-Ray 24F/24R Steel cartridge 1452g 54mm 32mm $1,100
FAQ
Will the rim crack on rock gardens or bottom-outs at low pressure?
The rim bead area uses a thickened impact-reinforced layer; impact testing passes >60J extreme impacts (above the ISO 30J standard). Inner widths of 26/28/30mm accept wider tyres, which deform to absorb shock at low pressure.
If the wheel is badly damaged in extreme riding, am I covered?
Yes - beyond the 2-year factory warranty, you get 30% Crash Replacement within 1 year of purchase: a discounted replacement wheel without paying full price.
How does this 45mm deep rim handle crosswinds on fast descents?
An optimised 45mm profile keeps steering torque predictable at 10°–15° yaw, so high-speed descents stay planted.
Which tyres should I run, and at what pressure?
On the 26mm bed run 35-40mm at 38-55 PSI; the 28mm bed suits 40-45mm at 32-48 PSI; the 30mm bed runs 45-50mm at 28-42 PSI tubeless.
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 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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