

Ultra X 50 — Engineered for Speed, Stability, and Durability
The Ultra X 50 is the ultimate all-terrain performance wheelset, designed for riders who demand aerodynamic efficiency, durability and control across every surface — from smooth tarmac to rugged gravel.
At its core is a hooked carbon rim with a 32mm internal width, purpose-built to support larger tire formats from 2.0 to 2.25 inches. This wide stance enhances stability by reducing tire deflection and increasing air volume, allowing lower pressures for improved traction, comfort, and confidence on any terrain.
The 41mm external rim profile delivers a proven aerodynamic advantage, promoting smoother air attachment and reduced drag, so you can maintain speed and efficiency even in challenging wind conditions.
New to the Ultra X 50 is a bead lock system that simplifies tubeless setup, ensuring a secure, airtight seal whether you’re fitting tires in your workshop or trailside. This system enhances reliability and minimizes burping, giving riders peace of mind on every ride.
Every element of the Ultra X 50 is built for strength and longevity. A reinforced nipple bed allows for higher spoke tension, increasing stiffness and durability under demanding loads. High-quality Bladed Pillar spokes deliver precise handling, efficient power transfer, and lasting performance.
Constructed from T700 high-modulus carbon fiber, the Ultra X 50 balances lateral stiffness with vertical compliance, maintaining comfort without compromising responsiveness. Lightweight, robust, and aerodynamically refined — the Terra Labs Ultra X 50 sets a new benchmark for modern endurance and gravel performance.
- Fast and robust gravel wheel, features tubeless and hooked rim profile
- Ultra-wide internal profile for decreased rolling resistance, ability to run pressures under 30psi (2.1 bars)
- Wide and deep profile integrates seamlessly with gravel tires to increase aerodynamic efficiency
- Applies Terra Labs. Dynamic Ride Balance to high-performance gravel
- High quality ratchet hubs with Center locking interface XDR or SRAM/Shimano driver bodies
- Max tire pressure 70 psi/4.8 bar
WARRANTY
Terra Labs. offer a full 2 year warranty on all components (hubs, spokes, nipples, rims) for manufacturing defects.
Specifications
| Size (wheels) | 700c |
|---|---|
| Rim construction | Carbon – Hooked |
| Tire compatibility | 700 x 44c-70c w/ tube or sealant |
| Rim depth | 50mm |
| Brake compatibility | Disc (Center Lock) |
| Rim - inside width | 32mm |
| Rim profile | Symmetrical |
| Rim finish | UD fiber, permanent decals |
| Hub | 124h ratchet, straight pull |
| Driver body type | n/a, SRAM XDR, SRAM/Shimano Road |
| Bearings | Cartridge - Stainless Steel |
| Max tire pressure | 70psi |
| Max recommended system weight | 120kg/265lb |
| Spoke Length DS | n/a |
| Spoke Length NDS | n/a |
| Max outside width | 40mm |
| Weight (g) | 1619 |
| Weight Based On | Estimated lightest weight for wheelset configuration: 12mm through axles and XDR body. Tape and valve included in weight. |
Same Day Dispatch
All orders placed before 4pm Monday to Friday are dispatched same day.
Free & Fast Delivery
A free fully-trackable 2-day delivery service on all orders over £150.
Exchanges & Returns
You have 30 days from the shipping date to return your purchase FREE OF CHARGE.
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