Upgrade your Brompton with one of the most advanced rear hubs available. The Onyx Brompton Rear Hub features Onyx Racing Products’ patented sprag clutch freehub system, delivering instant engagement with zero backlash and an incredibly smooth, virtually silent ride. Unlike traditional pawl-driven hubs, the Onyx sprag clutch engages instantly under load without the clicking noise or lag associated with conventional freehubs. The result is seamless power transfer, exceptional reliability, and a refined riding experience whether you’re commuting through the city or tackling longer weekend rides. Precision CNC-machined from aerospace-grade aluminium and assembled in the USA, the Onyx Brompton Rear Hub is built to withstand years of daily use while providing low maintenance and outstanding durability. Pair it with a premium wheelset to unlock the full performance potential of your Brompton. Features Patented Sprag Clutch freehub technology Instant engagement with zero pedal lag Virtually silent operation—no traditional freehub clicking Precision CNC-machined aerospace-grade aluminium construction High-quality sealed cartridge bearings for exceptionally smooth rolling Outstanding durability with minimal maintenance Optimised specifically for Brompton folding bicycles Available in a range of anodised colours Proudly designed and manufactured in the USA Specifications Application: Brompton folding bicycles Hub Type: Rear freehub Engagement System: Patented Sprag Clutch Engagement: Instant (zero-degree engagement) Hub Shell Material: CNC-machined 7075-T6 aluminium Axle Material: Aluminium Bearings: Premium sealed cartridge bearings Axle Standard: 112mm OLD (Brompton rear spacing) Brake Compatibility: Rim brake Driver Body Options: Shimano HG (Brompton compatible) Spoke Compatibility: J-bend spokes Spoke Hole Options: 20H / 24H / 28H (depending on model) Weight: Approximately 285–315g (varies by freehub body and drilling) Country of Manufacture: USA Why Choose the Onyx Brompton Rear Hub? For Brompton riders seeking the ultimate riding experience, the Onyx Rear Hub offers a noticeable upgrade in both performance and refinement. Its silent freehub eliminates distracting noise, while the instant engagement provides direct, efficient power transfer every time you pedal. Combined with premium materials, precision engineering, and legendary Onyx durability, it’s the ideal centrepiece for a high-end custom Brompton build. Whether you’re commuting, touring, or building your dream Brompton, the Onyx Rear Hub delivers smoothness, responsiveness, and reliability that sets it apart from conventional rear hubs.
