Both bikes are pretty much the same, except for a few key features.

The Redshift MX. Aaron Brown/Tech Insider

From the ground up, both bikes were built with racing and reliability in mind, but the MX is the go-to for off-road use.

Alta told Tech Insider that the MXs would come before the SMs, because the road bike still has to go through Federal approval for road use. If you live in California and you were pre-order an MX right now, you'd likely take delivery of it sometime in July, the company said.