BERD SPARROW50 GOLD | CARBON GRAVEL WHEELSET
1,298g. 50mm deep. Engineered for speed, comfort and control.
The Berd Sparrow50 Gold brings together aerodynamic carbon rims, ultra-lightweight Dyneema spokes and precision-engineered hubs to create a gravel wheelset that refuses to compromise.
Designed for performance gravel racing and ultra-distance riding, the Sparrow50 Gold combines aerodynamic efficiency with vibration-damping technology to help you maintain speed and reduce fatigue when the terrain gets rough.
KEY FEATURES
- Weight: 1,298g (700c wheelset)
- Rim depth: 50mm aerodynamic carbon
- Internal width: 30mm
- External width: 38mm
- Spokes: Berd PolyLight Dyneema
- Hubs: Berd Talon ESL-R
- Freehub: 36-tooth ratchet
- Tyre compatibility: 40–60mm
- Brake interface: Centre Lock
- Tubeless: Ready, with tape and valves installed
AERODYNAMICS WITHOUT COMPROMISE
The Sparrow50 Gold features a 50mm-deep carbon rim developed to deliver aerodynamic performance on modern gravel tyres. Its 38mm external width and 30mm internal channel provide a wide platform for high-volume rubber.
Berd reports a 14% aerodynamic improvement over its previous-generation Sparrow wheelset. The rim has been optimised around 45–55mm tyres, making it particularly well suited to modern performance gravel bikes.
DYNEEMA SPOKES. A DIFFERENT KIND OF COMPLIANCE.
Conventional steel spokes transmit high-frequency vibration through the wheel. Berd PolyLight spokes use ultra-high-molecular- weight polyethylene fibres, commonly known as Dyneema, to introduce viscoelastic damping.
This technology dissipates vibration energy, helping to reduce the harshness transmitted through the bike. The result is a smoother ride over rough gravel, washboard surfaces and broken terrain.
Each spoke weighs approximately 2.4g, contributing to the wheelset's exceptionally low overall weight.
LESS VIBRATION. MORE EFFICIENCY.
Berd reports a 5-watt rolling-efficiency benefit at 30km/h from its vibration-damping spokes, based on independent testing by John Karrasch.
By reducing vibration-related energy losses, the Sparrow50 Gold is designed to help riders maintain efficiency and comfort across demanding gravel terrain.
BERD TALON ESL-R HUBS
At the centre of the wheelset are Berd's Talon ESL-R hubs, featuring a lightweight 36-tooth ratchet freehub and precision-machined Tri-Coat aluminium freehub body.
Equal Spoke Length technology uses identical spoke lengths across both sides of both wheels, simplifying spare-spoke management and servicing.
TECHNICAL SPECIFICATIONS
| Wheel size | 700c / 29" |
| Wheelset weight | 1,298g |
| Front wheel | 600g |
| Rear wheel | 698g |
| Rim material | Carbon fibre |
| Rim depth | 50mm |
| Internal width | 30mm |
| External width | 38mm |
| Rim weight | 420g |
| Spoke count | 24 front / 24 rear |
| Spokes | Berd PolyLight |
| Hubs | Berd Talon ESL-R |
| Freehub engagement | 36-tooth ratchet |
| Brake compatibility | Centre Lock disc |
| Tyre compatibility | 40–60mm |
| Maximum tyre pressure | 60 PSI / 4.14 bar |
| Rider weight limit | 127kg |
Weight excludes rim tape and tubeless valves. Specifications refer to the 700c version with Berd Talon ESL-R hubs.
BUILT FOR THE MODERN GRAVEL BIKE
Whether you're racing at The Traka, tackling Badlands or exploring the Surrey Hills, the Sparrow50 Gold delivers a combination of aerodynamic performance, low weight and vibration damping.
Available through The Cycle Collective. Contact us for compatibility advice, tyre selection and custom build enquiries.
Product Information
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Close all zippers before washing
Wash at max 30°C
Hand washing with cold water (or gentle wash cycle)Using mild, high quality detergent
Drip drying in shade, do not machine dry
Avoiding ironing and bleachThe instructions on your garment’s label
Sorting your clothing by color
Avoiding fabric softener.
Our clothing isn’t meant to be dry cleaned and soaking clothing is not ideal
Storage
Unused sealed sachets should be stored inside the box in a well-ventilated, dry place and protected from moisture, heat and direct sunlight. Can be stored for up to 3 years.
Size
Each sachet contains 30g powder.2 x 30g sachets per carton box.
Makes 2x litres of bike cleaner
100% plastic free packaging
Readily biodegradable ingredients
100% water free
Refill your old bottle and help reduce plastic waste
92% saving in packaging compared to 2 x 1L bike cleaner
100% environmentally friendly ingredients, including plant based raw materials
Supplied in a compostable sachet and printed with vegetable inks
FSC recycled card box containing 2 x sachets – that makes 2L of bike cleaner
Safe on all parts and surfaces including carbon fibre
Will not harm seals, cables, disc brake pads or rotors
Alkaline based and free from alcohol, CFCs, EDTA, solvents or acids
Vegan & vegetarian friendlyCruelty free, not tested on animals
Sachet Instructions
1. Grab your empty old bottle of Muc-Off. (You may need a pair of adjustable pliers to remove the trigger from the bottle). Or purchase our Bottle for Life.
2. Fill up to the shoulders of the bottle with 1 litre of lukewarm water for faster formula activation!
3. Carefully cut one corner of the sachet open along the diagonal cut lines.
4. You can carefully pour the sachet straight into the top of the bottle. Or using the box, fold the inside of the lid together using the printed lines as a guide and use this as a funnel to pour the powder into your bottle. (Please see our video for full instructions on this.
5. Screw your spray trigger back onto the top of the bottle. Ensure it’s tight!
6. Shake the bottle vigorously for 30-60 seconds to activate the formula. If you notice any undissolved powder simply keep shakin’ it!
7. Go clean that filthy bike!
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