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Bola EXT 35G Carbon Gravel Wheelset –35mm Ultralight,Carbon Spoke

Bola EXT 35G Carbon Gravel Wheelset –35mm Ultralight,Carbon Spoke

$1,111.00 USD
$1,250.00 USD $1,111.00 USD
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Rim Width(Ext/Int)
Cassette Body
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The Bola EXT 35G is a 35mm wide-platform T1000 carbon gravel disc wheelset on a BL180 54T ceramic hub with Hyper carbon spokes, 1090g — the lightest gravel wheelset in the Bola range.

The ultralight gravel blade: 35mm, 1090g, ceramic. The Bola EXT 35G is the featherweight of the gravel family — a 35mm T1000 rim (30-36mm external, 24-30mm internal) wrapped around a BL180 CNC aluminum hub, TPI ceramic bearings and Hyper carbon spokes, built for gravel racing where every gram counts.

Buying Guide.

Internal width - 24mm: 32c at 80-90 PSI for road.

Internal width - 30mm: 35-48c at 40-50 PSI for gravel.

Max rider weight: rated to 105kg - the lowest in the Bola gravel range; heavier riders should consider the EXP 50R.

Same-depth series: the EXP 35G (~$999) keeps a DT Swiss 240s hub and the CE 35G (~$1111) pairs DT ratchet with foil spokes; the EXT 35G is the lightest gravel wheel in the catalog.

Adjacent depth: the EXT 45G above adds aero on straight gravel - choose the 35G for the climb, the 45G for the flat.

Target Audience & Usage Notes.

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

Max system weight 105kg (lowest in the Bola gravel range); heavier riders should consider EXP 50R (120kg).

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

Not for aggressive off-road or muddy cyclocross.

The Ride That Awaits.

Pick it up and it feels like a held breath; on the gravel climb it floats where others labor, the ceramic hub freewheeling quiet between your efforts. Wide rubber cradles the rough, and at the top you want to turn around and do it again. Free shipping and a 3-year rim / 2-year wheelset warranty mean the lightest gravel ride in the catalog awaits.

Specifications
Size: 700c
Carbon Grade: Toray T1000 ultra-high-modulus carbon fiber
Rim Depth: 35mm
Bead Type: Hooked / Hookless
Inner Rim Width: 24/30mm
Outer Rim Width: 30-36mm
Hub Model: BL 180 54T
Spoke: hyper carbon, 2x, Straight pull
Spoke Count: 20/20
Bearing Type: TPI Ceramic bearing
Complete Wheelset Weight: 1090g (tape & valve excluded, ±2% tolerance)
Accessories: Tape, valve and spare spokes
Trade-offs & Considerations
Aero vs Crosswind: The 35mm gravel depth is the climbing-focused choice: it costs only about 1.0W more than a 28mm rim at 40km/h and 10 deg yaw while staying calm in crosswinds; the 45G trades about 2.5W of aero for deeper-section speed.
Weight vs Stiffness: At 1090g with hyper carbon spokes, this set is about 160g lighter than the steel-spoke EXP 35G (plus or minus 5g), while lateral stiffness stays within 3%; the trade-off is a firmer ride that feels less forgiving on sharp gravel hits.
Tire-Type Trade-off: The hooked bed runs tubeless from 28c to 62c; the 24/30mm internal channels trade max pressure (about 72 PSI hookless cap) for wider gravel volume and lower rolling resistance.
Sourcing & Delivery Trade-off: Stock ships in 1-3 business days at $1,111; custom carbon-spoke lacing adds 7-15 business days and roughly a $100-150 premium.
Config Ladder: TPI ceramic bearings and the 54T ratchet (about 6.7 deg) are already fitted; the main step-down is the steel-spoke EXP build, which trims about $110 but adds 160g and slower about 10 deg engagement.
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: At 1090g with hyper carbon spokes, the 35mm T1000 rim is the climbing-focused gravel build - it costs only about 1.0W more than a 28mm rim at 40 km/h and 10 deg yaw.
Gravel Climbing / Hill Stages: About 160g lighter than the steel-spoke EXP 35G, the set floats up gravel climbs while keeping lateral stiffness within 3%.
Bikepacking / Light Adventure: The hooked bed runs tubeless from 28c to 62c; the 24/30mm internal channels trade the 72 PSI hookless cap for wide gravel volume and low rolling resistance.
All-Road / Mixed-Surface: The calm 35mm profile stays composed in crosswinds, and the 54T ratchet (about 6.7 degrees) with TPI ceramic bearings picks up drive immediately on rough tracks.
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 35G BL 180, 54T ratchet, 6.7° engagement Hyper carbon, 20/20, 2x straight-pull TPI Ceramic 1090g 35mm 24/30mm See store
Roval Terra CLX III DT Swiss ARRIS composite, 24/24 Steel cartridge 1079g 38mm — —
Hunt 42 Limitless Gravel Hunt Sprint, steel bearings Pillar aero, straight-pull Steel 1548g 42mm 25mm $1,599
Enve G SES 4.5 Pro Enve 24/24 Steel cartridge 1565g 49/55mm 30mm $2,060
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 24mm bed run 32mm road at 80-90 PSI; on the 30mm bed run 35-48c gravel at 40-50 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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