Sidi Rex: Review

Sidi builds some of the best boots in the motorcycling industry, so it’s no surprise that they continue to improve and revamp old designs. Such is the case with their Rex boot, which replaces the Vortice. The Vortice has been a tried and true behemoth of the track-going world and, to be quite honest, still has a strong following. But evolution is constant, and now the Rex is here to stay.

Thankfully, the changes from the Vortice to the Rex are all in the name of comfort and ease of use. Getting into the Rex is a simple top-entry where you have plenty of room to angle your foot in, with a generous strap that makes pulling them on a breeze. If you’re familiar with the process of getting into a Vortice, you’ll appreciate how much of an improvement this is. If you’re not aware of the woes of adorning the Vortice, consider yourself lucky. 

Once you’ve got the Rex on, you’ll have three Tecno-3 closures on the front of the boot to tighten down. These are super easy to use and have a similar action to Boa closures, which make getting the perfect amount of snugness—without cutting off circulation—a breeze. This is a big improvement over the previous design because the Vortice had the top Tecno-3 tensioner on the rear calf portion of the boot. This put it directly in harm’s way if you slid on your back in a crash, so kudos to Sidi for sorting that out. 

With the Rex, the back and front of the ankle is now a neoprene-esque material—and it’s amazing. These might be some of the most comfortable, ready out-of-the-box boots that I’ve ever worn. There is virtually zero break-in time with the Rex, due in large part to those stretch panels. Sidi’s decision to get rid of the replaceable sole the Vortice had, also contributes to the lack of break-in time. I’m sure some of you might think that taking a feature away is a negative, but the stiffness of the Vortice’s sole was the main reason I never bought a pair. In fact, the Rex boots are so comfortable that I’ve started wearing them under my jeans for street riding and have had zero issues.

With pretty much all the old features of the Vortice still intact, like the replaceability of the toe slider and virtually every other hard part on the boot, the Rex retains the durability the Vortice was so well-known for. What the Rex doesn’t retain is the price—at $545, it’s one of the most expensive race boots on the market. This means you’ll pay more for the Rex than you would the Mag-1, Dainese’s Axial D1 or Alpinestars Supertech R. This is very high-end territory, so I expected a premium price—I was just hoping it would be below $500. But the Rex does make an already top-tier boot even better, and all those refinements and design tweaks cost money. 

Sidi boots, in general, are designed as investments. While $545 is a bit of a shock initially, the replaceability of the parts means that you can end up in the weeds multiple times before you have you to shell out your hard-earned dollars for another pair. Instead, you replace the necessary parts and pieces as needed—which is a heck of a lot cheaper. That potential savings, coupled with the knowledge that you’re wearing one of the safest boots on the market, means that the Rex is indeed worth the cost.

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