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Bola EXT 45G Carbon Gravel Aero Wheelset –45mm Super light,Carbon Spoke

Bola EXT 45G Carbon Gravel Aero Wheelset –45mm Super light,Carbon Spoke

$1,111.00 USD
$1,250.00 USD $1,111.00 USD
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Free shipping，VAT included in USA & EU
Rim Width(Ext/Int)
Cassette Body
Decal

The Bola EXT 45G is a 45mm wide-platform T1000 carbon gravel disc wheelset on a BL180 54T ceramic hub with Hyper carbon spokes, 1150g, for superlight gravel aero.

The superlight gravel blade: 45mm, 1150g, ceramic. The Bola EXT 45G pairs a 45mm T1000 rim (32-36mm external, 26-30mm internal) with an aluminum BL180 CNC hub, TPI ceramic bearings and Hyper carbon spokes — one of the lightest gravel aero wheelsets available, built for gravel speed without the climbing penalty.

Buying Guide.

Internal width - 26mm: 28c at 75-90 PSI for road.

Internal width - 28mm: 32-40c 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 EXT; heavier riders should consider the EXP 50G.

Same-depth series: the CE 45R (~$1111) leans road and the EXT 35G (~$1111) climbs lighter; the EXT 45G is the lightest EXT gravel aero pick.

Adjacent depth: the EXT 35G below is the climbing specialist - choose the 45G for aero gravel, the 35G for raw uphill.

Target Audience & Usage Notes.

Disc-brake gravel and road frames, 12x100/12x142 or QR.

Max system weight 105kg (lowest in EXT); heavier riders should consider EXP 50G (120kg).

Ceramic bearings need clean conditions; Hyper carbon spokes are less impact-tolerant than steel.

Not for aggressive off-road descents.

The Ride That Awaits.

Lift it and you half-believe it is empty; on the gravel climb it spins up with an urgency no heavier wheel can match, the ceramic hub freewheeling silent between efforts. Wide rubber at low pressure floats the rough like water. Free shipping and a 3-year rim / 2-year wheelset warranty mean you should never ride heavy again.

Specifications
Size: 700c
Carbon Grade: Toray T1000 ultra-high-modulus carbon fiber
Rim Depth: 45mm
Bead Type: Hooked / Hookless
Inner Rim Width: 26/28/30mm
Outer Rim Width: 32-36mm
Hub Model: BL 180 54T
Spoke: hyper carbon, 2x, Straight pull
Spoke Count: 20/20
Bearing Type: TPI Ceramic bearing
Complete Wheelset Weight: 1150g (tape & valve excluded, ±2% tolerance)
Accessories: Tape, valve and spare spokes
Trade-offs & Considerations
Aero vs Crosswind: The 45mm rim saves about 4.0W versus a 35mm gravel rim at 40km/h, but at 10° yaw the 32–36mm outer width catches open-gravel crosswinds; the shallower EXT 35G trades roughly 2.0W of aero for calmer side-wind manners.
Weight vs Stiffness: T1000 carbon with hyper carbon spokes brings the build to 1150g, about 150g lighter than a steel-spoke 45mm gravel wheelset (±5g), while lateral stiffness stays within 3%; the 20/20 lacing transmits a sharper feel over chattery gravel.
Tire-Type Trade-off: The hooked bed accepts clincher and tubeless tyres from 28c to 62c; the 26/28/30mm internal options trade a little cross-section stiffness for wider gravel volume, and hookless-rated tyres cap around 72 PSI.
Sourcing & Delivery Trade-off: Stock builds ship in 1–3 business days at $1111; custom decals or lacing add 7–15 business days and roughly a $100–150 premium.
Config Ladder: This set already runs TPI ceramic bearings and hyper carbon spokes; the main ladder is the internal width (26→30mm, about +5g for wider gravel volume) and the hub (BL 180 → 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: 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 T1000 aero gravel section saves about 4.0W versus a 35mm gravel rim at 40 km/h; at 1150g with hyper carbon spokes and TPI ceramic bearings it is a race-day gravel build.
Fast Gravel / All-Road: The BL 180 54T ratchet hub picks up fast; on the 26mm bed run 28c road at 75-90 PSI, on the 30mm bed run 35-50c gravel at 30-45 PSI, and the rim accepts 28-62mm.
Rugged Gravel / Chattery Terrain: The 20/20 carbon-spoke lacing transmits a sharper feel over chattery gravel; impact testing passes >60J above the ISO 4210-7 reference within the 110kg system limit.
Not Recommended For: Heavy-loaded multi-week expeditions - the superlight 1150g build prioritises race speed over touring durability.
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 / road disc frame
How It Compares
ModelHubSpokeBearingWeightDepthWidthPrice
EXT 45G 54T ratchet, 6.7° engagement Hyper carbon, 20/20, 2x straight-pull Ceramic 1150g 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
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 30% Crash Replacement within 1 year of purchase: a discounted replacement wheel without paying full price.
Which tyres should I run, and at what pressure?
On the 26mm bed run 28c road at 75-90 PSI; on the 30mm bed run 35-50c 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 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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