The Onyx Ultra HG ISO 10mm bolt-on rear hub is the disc brake mount hub from Onyx and is made to the tightest tolerances on the planet. Using sprag internals for strength, extremely low rolling resistance, and infinite points of engagement.

Onyx Ultra HG hubs a made to the tightest tolerances on the planet. Using sprag internals for strength, extremely low rolling resistance and infinite points of engagement.

• Ceramic hybrid bearings
• 7075 Aluminum Hub Shell
• Adjustable Preload
• Titanium bolts
• Extremely low rolling resistance
• Silent instant engagement
• 5 year limited warranty
• Made in the USA
• Hardened heat treated stainless steel driver
• Integrated labyrinth seal on the driver
• Adjustable sideload
• Patented sprag clutch mechanism
• Knurled stainless washers with grippers
• Compatible with Shimano HG (Hyperglide) style cogs(cog not included)
• 100% more torque capacity than Onyx Pro hub
• 3/8" bolt on, 12mm and 15mm thru axles options
• Weight: 465 grams (16.4oz) without cog