Onyx BMX Ultra Rear Hub
Best high performance hub for competitive BMX racers seeking silent precision
Engineered with sprag internals, this hub delivers silent, near-instant engagement and minimal rolling resistance. It is a premium choice for riders seeking precision, durability, and a smooth, maintenance-free ride.
$460.00
at
Wheelbuilder
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Who it's for
- Competitive racers seeking maximum power transfer out of the gate.
- Riders who prefer a quiet bike to focus on the track.
- Performance-driven athletes looking for every possible mechanical advantage.
Who should skip it
- Weight-conscious racers prioritizing the lightest possible bike build.
- Budget-oriented riders looking for a more affordable entry-level upgrade.
- Casual users who prefer simple, low-maintenance mechanical components.
Performance breakdown
Engagement Speed
Sprag clutch technology delivers truly instant power transfer to the drivetrain.
Rolling Efficiency
Ceramic hybrid bearings minimize friction for effortless, long-lasting coasting performance.
Build Durability
Robust 7075 aluminum construction handles aggressive BMX riding with absolute confidence.
Weight Optimization
Titanium hardware keeps rotating mass low without sacrificing structural integrity.
Maintenance Requirements
Sealed, high-quality internals demand very little attention between service intervals.
Tuning Precision
Adjustable preload allows riders to dial in the perfect bearing feel.
Key Specs
Weight
612.35 grams
Material
7075 Aluminum
Bearing Type
Sealed Cartridge (Ceramic Hybrid)
Spoke Count
36
Hub Type
Rear Cassette
Brake Compatibility
6-Bolt Disc
Axle Type
Bolt-On
Rear Spacing
110mm
Freehub Body Type
Shimano HG
Intended Use
BMX
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