Le Ruote Gravel Più Veloci del Mondo
Super Aerodinamiche con Raggi Ammortizzanti
Il Sparrow50 Gold è il 14% più aerodinamico del nostro Sparrow di generazione precedente, con lo stesso smorzamento delle vibrazioni che nessun rivale aero può eguagliare — una combinazione che supera ruote come ENVE e Zipp quando il gravel diventa accidentato.
Raggi Vincitori di Medaglia d'Oro
Con due medaglie d'oro olimpiche, due medaglie di bronzo e oltre 50 podi in Coppa del Mondo XC nelle ultime 2 stagioni, i raggi Berd sono i raggi XC MTB più vincenti al mondo. Leggeri, forti, ammortizzanti.†
Testato in Galleria del Vento +
Il Sparrow50 Gold presenta un profilo aerodinamico profondo 50 mm — le nostre ruote più veloci nel vento mai create.
Caratteristiche
The Sparrow50 Gold wheels were designed from the ground up to be fast on gravel. We combined aerodynamic and vibration-damping test data to model finish times using the data from our engineering white paper. The model accounts for aerodynamic drag, rolling resistance, and the vibration-induced losses that Berd spokes uniquely reduce. Results are intended for comparative purposes only — the calculator uses simplified assumptions for rider aerodynamics and does not account for elevation, drafting, or variable pacing.
Finish time vs. Sparrow50 Gold
Surface categories: Smooth pavement is clean tarmac with negligible vibration losses. Cat 1 (Hard Packed) is hard-packed fire roads and smooth dirt. Cat 2 (Common Gravel) is typical mixed-surface gravel with moderate roughness. Cat 3 (Chunky / Rough) is chunky, loose, or washboard surfaces where vibration losses dominate.
Cerchi
| Materiale Cerchio | Fibra di Carbonio |
|---|---|
| Larghezza Interna | 30 mm |
| Profondità Cerchio | 50 mm |
| Larghezza Esterna | 38 mm |
| Compatibilità Tubeless | Sì |
| Dimensione Ruota | 700c (29″; 622 mm Bead Seat Diameter) |
| ERD Cerchio | 541 mm |
| Peso Cerchio | 420 grams |
| Fori Raggi Angolati | Sì |
| Numero Fori | 24 Holes Front and Rear |
| Compatibilità Freno | Disc (Centerlock) |
Mozzi
| Tipo Mozzo Anteriore | Berd Talon ESL-R |
|---|---|
| Dimensioni Mozzo Anteriore | 12 x 100 mm or 12 x 110 mm (both convertible to 15 mm) |
| Tipo Mozzo Posteriore | Berd Talon ESL-R |
| Dimensioni Mozzo Posteriore | 12 x 142 mm or 12 x 148 mm |
| Compatibilità Corpo Libero | SRAM XD, Shimano Microspline, Shimano Hyperglide, or Campy N3W |
| Materiale Corpo Libero | TriCoat™ Aluminum |
| Meccanismo Ruota Libera | Cricchetto 36 Denti ad Alto Ingaggio |
| Produttore Mozzo | Berd |
| Tipo Freno | Centerlock |
| Cuscinetti Mozzo Anteriore | 2 x 6803 bearings (17 x 26 x 5 mm) |
| Cuscinetti Mozzo Posteriore | 2 x 15267 bearings (15 x 26 x 7 mm), 2 x 6802 bearings (15 x 24 x 5 mm) |
Raggi & Nippli
| Add a Berd Service Kit to your new Berd wheel order and receive all of the tools and supplies needed to service your wheels — including spare spokes! | |
| Raggi Anteriori | Berd PolyLight Spokes, 259 mm |
|---|---|
| Raggi Posteriori | Berd PolyLight Spokes, 259 mm |
| Schema di Allacciatura | Doppio Incrocio Anteriore e Posteriore |
| Nippli | Sapim Aluminum Double Square Secure Lock, Black |
Info Pneumatici
| Tubeless Ready | Nastro cerchio e valvole installati |
|---|---|
| Tipo Pneumatico | Tubeless, Clincher con camera |
| Compatibilità Pneumatici | 40 mm – 60 mm (1.50″ to 2.35″) |
| Actual Measured Tire Widths | Schwalbe G-One RS Pro 700 x 45 mm: 45.6 mm Schwalbe G-One RS Pro 700 x 50 mm: 50.9 mm Schwalbe G-One RS Pro 700 x 55 mm: 55.7 mm Continental Dubnital Rapid Race 29 x 2.2: 55.3 mm |
| Pressione Massima | 60 psi (4.14 bar) |
Peso
| Peso Set Ruote | 1.298 grammi (senza nastro e valvole) |
|---|---|
| Peso Ruota Anteriore | 600 grammi (senza nastro e valvole) |
| Peso Ruota Posteriore | 698 grammi (senza nastro e valvole) |
Generale
| Uso Previsto | Corse e Pedalate Gravel |
|---|---|
| Approvazione E-Bike | Sì, fino a 60 Nm/500 W |
| Limite di Peso | 280 lbs / 127 kg |
| Metodo di Assemblaggio | Allacciato a mano a Hopkins, MN, Centrato da TRUDI |
| Garanzia | Garanzia Limitata a Vita e Sostituzione Gratuita |
Oltre alla nostra offerta standard con il mozzo Berd Talon ESL-R, le ruote Sparrow50 Gold possono essere montate con mozzi Industry Nine o Onyx. Gli ordini personalizzati richiedono 4–6 settimane.
Mozzi Industry Nine
I mozzi Industry Nine J-Bend sono disponibili nei modelli Hydra2 e Solix. Dopo l'ordine riceverai un'e-mail per le opzioni. Prevedere 4–6 settimane.
Mozzi Onyx Racing Products
Tutte le ruote Berd sono disponibili con mozzi Onyx Racing Products Vesper e Classic Hook Flange. Dopo l'ordine riceverai un'e-mail per le opzioni. Prevedere 4–6 settimane.
Hub Maintenance (Talon ESL-R Hubs)
| Freehub Maintenance | Greasing the internal ratchet mechanism is recommended every 3,000 km for optimal performance. To service the freehub, remove the end cap and slide the freehub body off the hub shell. Remove all internal components in order: the purple washer nearest the freehub body, the ratchet springs, the ratchet plates, the purple washer nearest the hub body, and the freehub axle bushing. Clean all parts thoroughly with a solvent-based degreaser, allow them to dry completely, then apply a thin layer of DuMond Pro X Freehub Grease to all contact surfaces. Reassemble the hub, ensuring all parts are placed in the correct orientation as shown below. |
|---|---|
| End Cap Grease | A thin layer of waterproof lithium complex grease is pre-applied to the exterior bearing surfaces between the bearings and end caps. This blue grease acts as a barrier against water and dirt intrusion. Inspect the grease after washing your bike, after wet or muddy rides, or every 3,000 km — whichever comes first. If the grease appears contaminated with dirt or has washed away, clean the surfaces and reapply a thin layer of Lucas Marine Grease (waterproof lithium complex) before reinstalling the end caps. |
| Bearing Maintenance | Inspect the bearings every 3,000 km for smooth rotation and any roughness or play. Bearing service should be performed by a qualified bicycle mechanic using proper extraction tools and a bearing press designed for this purpose. Do not attempt to remove or install bearings with improvised tools, as this can damage the hub shell or the bearing seats. |
Spoke Maintenance
| Spoke Tension | Sparrow50 Gold wheels are built at the Berd factory using our Berd Wheel Stress Relief Machine, which removes significantly more stretch from the spokes than a traditional tensioning process. As a result, these wheels are highly stable and will most likely never need to be retensioned. There’s no need to worry about spoke tension: some tension loss over time is normal, and as long as your wheel is true, you can keep riding. If you do notice major tension changes after extended use, turn each nipple up to 2 full turns using a nipple wrench from the tire side, while holding the spoke with the Berd spoke holding tool to prevent twisting, followed by minor truing and dish adjustments. |
|---|---|
| Spoke Care | Berd spokes are extremely strong in tension, but like any fiber they can be damaged by cuts and abrasion. The most common causes are chain drops into the spokes and a derailleur or chain contacting the spokes after a crash or bent hanger. Make sure your rear derailleur limit screws are set correctly so the chain can’t shift past the largest cog, and check your hanger alignment after any crash. After every wash, take a quick look along each spoke for fraying, fuzzing, nicks, or cuts. Light surface scuffing is cosmetic, but if you see cut or frayed fibers, replace that spoke before your next ride. |
| Spoke Replacement | Replacement spoke length for your wheel size is listed in the Technical Specifications above. Remove the tire and peel back the rim tape near the damaged spoke. Loosen the damaged spoke’s nipple and take the spoke off the hook. Install the new spoke on the same hook, replicating the crossing pattern of the other spokes on that side of the wheel. Thread the nipple on from the tire side while holding the spoke with the Berd spoke holding tool to prevent twisting. As you tighten, pluck the new spoke and its neighbors and bring them up until they ring at the same pitch. Once the pitch matches, true the wheel in a truing stand. New spokes need time to settle, so recheck the replacement spoke’s tension every 24 hours for 3 days and adjust as needed. |
Cleaning and Cosmetics
| Wheel Cleaning | The best way to clean your hubs, rims, and Berd spokes is with mild dish soap and water — we highly recommend Dawn. A gentle wash will remove dirt and trail grime and will restore white spokes to a near-new appearance. Note that dark-colored grease (such as hub or chain grease) can permanently stain white spokes and is very difficult to remove once absorbed, even with solvents. While Berd spokes are highly resistant to most solvents, we do not recommend solvent-based cleaners because they offer no benefit over soap and water for routine cleaning. Watch: How to Clean Berd Wheels |
|---|---|
| Spoke Color Maintenance | Berd spokes are naturally white. Black spokes and other colors are achieved with an alcohol-based coating. While the coating is durable, spoke coloring will gradually become more matte over time with normal use. Citrus-based enzyme cleaners and other non-soap cleaners have been shown to partially strip this coating and should be avoided — use only soap and water. Black spoke coloring can be refreshed at any time with a Berd Spoke Coloring Kit to restore the full dark finish. |
Customer Reviews
Can literally feel the aerodynamics present itself above 20mph. Beautiful looking and performing -at least for the first 500miles...
So smooth! I can't believe how much of a difference these make. I ride the same road and gravel routes for intervals so the comparison was really easy to feel. I even took them on some mellow singletrack and they worked well there too. Aero advantage feels great. Looking forward to my next race with these.
Such Great wheels!. If you are on the fence, treat yourself.
Great wheels!
Love them and they look amazing as well!
† Basato sul maggior numero di medaglie d'oro olimpiche e sulla percentuale più alta di vittorie in Coppa del Mondo XC UCI durante le stagioni 2024 e 2025.
Berd sta per Bike + Nerd, perché è esattamente ciò che siamo. Usiamo vera ingegneria, veri test e dati reali per costruire le migliori ruote del mondo. SII UN BIKE NERD.
