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Bola ULT 50R Carbon Aero Wheelset Disc brake

Bola ULT 50R Carbon Aero Wheelset Disc brake

$698.00 USD
$780.00 USD $698.00 USD
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Free shipping  |  VAT included in EU & USA
Rim Width(Ext/Int)
Freehub Body
Decal

The Bola ULT 50R Carbon Aero Disc Wheelset - a 50mm aero road/gravel set with Sapim CX-Ray spokes and a TPI-ceramic BL100 hub, built in Toray T800 unidirectional carbon.

Clip in and feel the difference on a long group ride or a mixed-surface adventure: the Bola ULT 50R blends a 50mm aero rim with a light ~1280g set weight to help you maintain speed with less effort. Tubeless-ready and engineered to balance acceleration, stability, and long-ride comfort.

Buying Guide.

Internal width - 21mm: run a 28mm tire at 75-90 PSI for smooth tarmac.

Internal width - 24mm: cup a 30-32mm tire at 65-80 PSI for mixed roads.

Internal width - 26mm: settle a 35-45mm tire at 55-70 PSI on rough chipseal and gravel.

Max rider weight: rated to 120kg system - check rider and gear before ordering.

Same-depth series: the ELT 50R at $579 uses Pillar spokes, the SL 50R at $789 moves to DT Swiss 350, and the PRM 50R at $888 uses carbon blade spokes - choose this ULT for the CX-Ray ceramic mid-premium pick.

Adjacent depth: the ULT 40R climbs easier and the ULT 60R goes faster on flats - this 50R is the balanced aero all-rounder.

Target Audience & Usage Notes.

For riders splitting road and gravel who want one versatile aero set.

Not for heavy loaded touring or extreme off-road.

Requires a disc frame with thru-axle or QR.

Max system weight 120kg.

The Ride That Awaits.

A fast rolling race rewards it on every false flat - the mid-depth rim carries you over the rollers without gust sensitivity, and the bladed spokes hold a firm line through the bunch sprint. Wide tubeless rubber keeps the long day comfortable. Free shipping, VAT included, and a 24-month limited global warranty with 30% crash-replacement cover mean one aero set answers every ride you plan.

Specifications
Size: 700c
Carbon Grade: T1000 ultra-high-modulus carbon fiber
Rim Depth: 50mm
Bead Type: Hooked / Hookless
Inner Rim Width: 21mm / 24mm / 26mm options
Outer Rim Width: 28mm / 30mm / 32mm
Hub Model: BL 100 54T
Spoke: Sapim CX Ray, 24/24, 2x Straight pull
Bearing Type: TPI Ceramic bearing
Complete Wheelset Weight: 1280g (tape & valve excluded, ±2% tolerance)
Accessories: Tape, valve and spare spokes
Trade-offs & Considerations
Aero vs Crosswind: The 50mm rim saves about 4.5W versus a 35mm training wheel at 40km/h, but at 10° yaw on exposed descents the steering gets noticeably lively; dropping to the 45R gives up about 1.5W of aero for calmer, more predictable handling.
Weight vs Stiffness: T1000 carbon and Sapim CX-Ray spokes bring the set to about 1280g (±5g), roughly 30g lighter than the T800 Pillar-spoke ELT 50R at the same 50mm depth, while lateral stiffness stays within 3%.
Tire-Type Trade-off: The hooked / hookless bed runs 25–50c tubeless: 21mm internal for a 28mm tyre at 75–90 PSI, 24mm for 30–32mm at 65–80 PSI, 26mm for 35–45mm at 55–70 PSI; the wider beds trade a little aero for comfort on rough tarmac.
Sourcing & Delivery Trade-off: Stock builds ship in 1–3 business days at $698; a custom width, freehub or quick-release spec adds 7–15 business days and roughly a $60–100 premium.
Config Ladder: TPI ceramic bearings and the 54T ratchet (6.7° engagement) are already standard; moving to the 26mm internal bed adds about 30–50g for wider tyres, while stepping up to the 60R rim adds about 110g and ~1.5W of aero.
Performance Test Data
Fatigue Test: 750,000 cycles @640N (ISO 4210-7 Annex A, informative only)
Impact Resistance: >40J (ISO 4210-7 reference)
Flatness: <0.25mm (internal QC)
Roundness: <0.3mm (internal QC)
Max Spoke Tension: >300kg (internal QC)
Ultimate Strength: >100kg (internal QC)
Dynamic Equilibrium: <3g (internal QC)
Radial Stiffness: 122–136 N/mm (internal lab)
Lateral Stiffness: 42–51 N/mm
Max System Weight: 120kg
Recommended Use Cases
Road Racing: 2026 peloton standard runs 28-30mm tubeless on wide rims (TdF 2026 average ≈30mm); this 50mm section suits 40+ km/h racing and flat-to-rolling stages.
Gran Fondo / Endurance: All-day rides on modern frames designed around 30-32mm tyre clearance (Giant Propel, Cannondale SuperSix, Cervélo S5, 2026); wide 21mm bed pairs 25-32mm tubeless for comfort and speed.
Training & Daily Riding: Mid-depth versatility for group rides and race-pace training; ETRTO 2026 guidance recommends ≥28mm tubeless on 23mm+ inner beds for rolling efficiency.
Compatibility
Brake Standard: Disc brake, Center Lock rotor (140/160mm)
Axle: 12x100 / 12x142 thru-axle or QR
Freehub: Shimano HG / SRAM XDR (select at checkout)
Tire: Tubeless-ready clincher, 25-50mm
Frame: 700C disc road / light gravel frames
How It Compares
FAQ
What tyre width and pressure should I run?
On the 21mm bed run a 28mm tyre at 75–90 PSI; the 24mm bed suits 30–32mm at 65–80 PSI; the 26mm bed runs 35–45mm at 55–70 PSI tubeless.
What is the maximum system weight?
120kg system weight (rider + bike + gear).
Which axles and freehub are available?
12x100 / 12x142 thru-axle or quick-release, Center Lock rotor; Shimano HG or SRAM XDR selected at checkout.
What tyre range does it cover?
Tubeless-ready from 25c to 50c, depending on the internal width chosen.
Is it tubeless ready?
Yes. The hooked bed mounts tubeless tyres; tape, valve and spare spokes are included.
Warranty & Shipping
Bearing Type: TPI Ceramic bearing
Freehub Body: HG / XDR / XD
Complete Wheelset Weight: 1280g (tape & valve excluded, ±2% tolerance)
Accessories: Tape, valve and spare spokes
Warranty Period: 2 years
Crash Replacement: 30% discount on replacement parts
Processing Time: 1–3 business days (standard stock); 7–15 business days (custom)
Estimated Delivery: 7–15 business days (standard); 3–5 business days (expedited)
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