Onyx MTB 12x157mm Super Boost 32h Rear Hub
Onyx takes a fresh approach to the mountain bike rear hub, in an effort to eliminate drag and increase engagement. Instead of a traditional pawl engagement system, Onyx opts for a high-tech sprag clutch that is virtually drag-free when not engaged. When you put the power down, engagement is nearly instantaneous. And an added bonus: the hub is dead silent. All you'll hear on the trail is the sound of your tires gripping the trail, nothing else.
Many of you are probably curious what this fancy sprag clutch mechanism is, and how it works. Inside, there are several spring-loaded asymmetrical sprags that look similar to roller bearings. With the asymmetrical design, they are allowed to rotate freely in one direction. But in the opposite direction, they create a wedge against the hub body. That's essentially what's happening when you put the power down on your crank. The hub is greased for life from Onyx, which means it should require very little maintenance. For the "set-it-and-forget-it" crowd, this is your hub. All Onyx hubs are sourced and built in the USA.
*IMPORTANT COMPATIBILITY NOTE: This hub is NOT compatible with e*thirteen cassettes.*
Anodizing: All hub brands we sell offer at least one anodized color, and although they use purpose-built anodizing labs, there can be variations in color due to the nature of the electrochemical process. As such, we cannot guarantee that your hubs will match in color exactly as pictured on our website. If we notice a significant difference in a pair of hubs you order, we will contact you to discuss a resolution. If you have any questions, feel free to send us a message.
Tech Specs
| Axle Configuration: | 12x157mm Super Boost |
| Hole Count: | 32 |
| Spoke Type: | J-Bend |
| Shell Material: | Aluminum |
| Drive Shell Material: | Aluminum |
| Driver Options: | SRAM XD, Shimano HyperGlide (HG), Shimano MicroSpline |
| Bearing Type: | Stainless Steel Sealed Cartridge |
| Rotor Mount: | 6-Bolt |
| Warranty: | 5 years |
Specs subject to change without notice. Please check with manufacturer for the most up-to-date information.