Las Ruedas Gravel Más Rápidas del Mundo
Súper Aerodinámicas con Radios Amortiguadores
El Sparrow50 Gold es un 14 % más aerodinámico que nuestro Sparrow de generación anterior, con la misma amortiguación de vibraciones que ningún rival aero puede igualar — una combinación que, en nuestro modelado de tiempos, supera a ruedas como ENVE y Zipp cuando el gravel se vuelve rugoso.
Radios Ganadores de Medalla de Oro
Con dos medallas de oro olímpicas, dos medallas de bronce olímpicas y más de 50 podios en la Copa del Mundo XC en las últimas 2 temporadas, los radios Berd son los radios XC MTB más ganadores del mundo. Ligeros, fuertes, amortiguadores. "Si no usas radios Berd para mountain bike, estás en desventaja."†
Probado en Túnel de Viento +
El Sparrow50 Gold presenta un perfil aerodinámico de 50 mm de profundidad que lo convierte en nuestras ruedas más rápidas en el viento jamás creadas.
Características
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.
Llantas
| Material de Llanta | Fibra de Carbono |
|---|---|
| Ancho Interno | 30 mm |
| Profundidad de Llanta | 50 mm |
| Ancho Externo | 38 mm |
| Compatibilidad Tubeless | Sí |
| Tamaño de Rueda | 700c (29″; 622 mm Bead Seat Diameter) |
| ERD de Llanta | 541 mm |
| Peso de Llanta | 420 grams |
| Agujeros Angulados | Sí |
| Número de Agujeros | 24 Holes Front and Rear |
| Compatibilidad de Freno | Disc (Centerlock) |
Bujes
| Tipo de Buje Delantero | Berd Talon ESL-R |
|---|---|
| Dimensiones del Buje Delantero | 12 x 100 mm or 12 x 110 mm (both convertible to 15 mm) |
| Tipo de Buje Trasero | Berd Talon ESL-R |
| Dimensiones del Buje Trasero | 12 x 142 mm or 12 x 148 mm |
| Compatibilidad de Cuerpo Libre | SRAM XD, Shimano Microspline, Shimano Hyperglide, or Campy N3W |
| Material del Cuerpo Libre | TriCoat™ Aluminum |
| Mecanismo de Rueda Libre | Trinquete de 36 Dientes de Alto Enganche |
| Fabricante de Buje | Berd |
| Tipo de Freno | Centerlock |
| Rodamientos Buje Delantero | 2 x 6803 bearings (17 x 26 x 5 mm) |
| Rodamientos Buje Trasero | 2 x 15267 bearings (15 x 26 x 7 mm), 2 x 6802 bearings (15 x 24 x 5 mm) |
Radios & Niples
| 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! | |
| Radios Delanteros | Berd PolyLight Spokes, 259 mm |
|---|---|
| Radios Traseros | Berd PolyLight Spokes, 259 mm |
| Patrón de Enlazado | Doble Cruce Delantero y Trasero |
| Niples | Sapim Aluminum Double Square Secure Lock, Black |
Info de Neumáticos
| Tubeless Ready | Cinta de llanta y válvulas instaladas |
|---|---|
| Tipo de Neumático | Tubeless, Clincher con cámara |
| Compatibilidad de Neumáticos | 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 |
| Presión Máxima | 60 psi (4.14 bar) |
Peso
| Peso del Juego de Ruedas | 1.298 gramos (sin cinta de llanta ni válvulas) |
|---|---|
| Peso Rueda Delantera | 600 gramos (sin cinta de llanta ni válvulas) |
| Peso Rueda Trasera | 698 gramos (sin cinta de llanta ni válvulas) |
General
| Uso Previsto | Carreras y Paseos en Gravel |
|---|---|
| Aprobación E-Bike | Sí, hasta 60 Nm/500 W |
| Límite de Peso | 280 lbs / 127 kg |
| Método de Ensamblaje | Enlazado a mano en Hopkins, MN, Centrado por TRUDI |
| Garantía | Garantía Limitada de Por Vida y Reemplazo Gratuito |
Además de nuestra oferta estándar con el buje Berd Talon ESL-R, las ruedas Sparrow50 Gold también se pueden montar con bujes Industry Nine J-Bend u Onyx Vesper. Los pedidos personalizados requieren 4–6 semanas.
Bujes Industry Nine
Los bujes Industry Nine J-Bend están disponibles en modelos Hydra2 y Solix. Después del pedido recibirá un correo para seleccionar opciones. Permita 4–6 semanas.
Bujes Onyx Racing Products
Todas las ruedas Berd están disponibles con bujes Onyx Racing Products Vesper y Classic Hook Flange. Después del pedido recibirá un correo para seleccionar opciones. Permita 4–6 semanas.
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. If you do notice minor 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. |
|---|
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
Love them and they look amazing as well!
Wanted to upgrade my gravel wheels for a while now.
I am running a custom custom wheel set, Enve hubs and Duke rims with Berd spokes. Which I really liked.
Was interested in the Enve G SES 6.7 or the 4.5s, but something was holding me back (price, weight).
Then the new Sparrow 50 were launched.
They are a big step up from my current set.
Most noticeable the aero on faster sections,is a big improvement. The weight is on another level
when off the road on mtb trails.
I am in love with them, and would buy them again.
If you are looking at the current gravel wheel offerings, you have to put the Berd Sparrow 50 on your list!
So light and smooth
I love these wheels! They look amazing and they're so fast. I increased my average mph on a gravel segment on my commute by 2.5mph!!
They handle crosswinds like my 25mm deep wheels and climb well too.
They feel stiff out of the saddle but are also incredibly smooth.
I am pumped!
† Basado en el mayor número de medallas de oro olímpicas y el mayor porcentaje de victorias en Copa del Mundo XC UCI por cualquier marca de radios durante las temporadas 2024 y 2025.
Berd significa Bike + Nerd, porque eso es exactamente lo que somos. Usamos ingeniería real, pruebas reales y datos reales para construir las mejores ruedas del mundo. SÉ UN BIKE NERD.
