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Ergo 5 Mega Cycling Shoe - Men's

5 out of 5 stars
3 Reviews

Style & Size:

Size Chart


Why We Like The Ergo 5 Mega Cycling Shoe

As a manufacturer of premium cycling shoes, it might be difficult to choose exactly what Sidi road shoe to get. After all, its top end models offer carbon soles and dial closures, so how different can they be? Good question. If you feel like emulating your favorite pro and have ultra-deep pockets, by all means, go for the Shots that come in at an eye-watering $550. For the rest of us with mortgages and wider than average size feet, we're better served with its Ergo 5 Mega Cycling Shoe that comes in at less than 4 Benjamins.

Compared to the outgoing Ergo 4, the 5 receives an all-new upper constructed from Sidi's Techpro, an eco-friendly synthetic leather that's durable, lightweight, and water resistant. What we like most about it is how it's secure enough to wrap around your foot comfortably offering stable pedaling yet it's supremely supple so it doesn't cause hotspots if feet swell or dials are cranked down. The 5 does continue in the Sidi Ergo tradition of mixed-media closures and instead of two Techno3 Push dials like we find on the Shot and Wire 2, the Ergo 5 mounts one up top and on the side of the forefoot in a more traditional position, while utilizing a hook-and-loop closure strap for forefoot retention. It does enjoy the same Soft Instep 4 strap that the higher-end models receive helping to reduce weight while offering up luxurious padding for riding comfort and at the rear of the shoe, its redesigned heel cup stabilizes the foot for efficient pedaling.

Sole duties are the same as the previous Ergo 4, using Sidi's Twelve Carbon composite sole which relies on a carbon reinforced nylon sole with a carbon weave plate stiffening it where needed. If you don't have your sights set on every sprint point, you likely won't notice the difference between it and the Vent Carbon on the Shot and Wire, however, the Ergo 5's composite sole goes a long way in providing better all-day comfort by taking the stiffness down a couple of rungs.

Perhaps the most enduring feature of the Ergo 5 Mega and all Sidi shoes for that matter is its legendary last, honed over decades of working with some of the world's greatest cyclists. Very few shoes are more universally praised for their comfort than Sidi and that all starts with the last. As a mega version, this one is built for cyclist needing an EE or EEE width and its 4mm wider across the ball of the foot. This adds more volume and additional features include a higher instep and a wider heel cup.

The Ergo 5 Mega is available in Matte Black and White and Black in whole and half sizes between 42 to 47 and in a size 48.


  • Sidi's venerable Ergo built on a wider last
  • Twelve Carbon composite sole blends rigidity and tuned flex
  • Soft Instep Closure System prevents hotspots across the top of the foot
  • Durable Techpro Microfiber upper resists weather and wear
  • Reinforced heel cup provides slip-free fit
  • Dual Tecno-3 Push dials and hook-and-loop strap dials in the fit
  • Item #SID00A9
Upper Material
Techpro microfiber
2 Techno3 Push dials, Hook-and-Loop strap
Twelve Carbon Composite
Cleat Compatibility
Claimed Weight
[single, size 42.5] 11oz (312g)
Manufacturer Warranty
1 year for full-price items
road cycling

Overall Rating

5 based on 3 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 3 reviews

Fits True To Size

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Runs smallTrue to sizeRuns large

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5 out of 5 stars

February 25, 2021

Moving from Genius 7 Mega to Ergo 5 Mega

I've put it through the wringer

Sidi Megas have been the answer to managing my hammer toe. Thought I would try Shimano R-Phyre which were disappointing when it came to extra width. I'm taking advantage of good sale offered by Competitive Cyclist, It will be interesting to see how well push dials will work as opposed by the lever/strap of Genius 7's. With the hook strap on Ergos it should allow me to loosen for toe area. I will probably need to use Specialized insoles which have worked well in Gen 7's. Don't get me wrong as the Gen 7's have been impressive. But the Ergo 5's on sale were only $30 more than a new pair of Gen 7's at MSRP. The Ergo 5's at MSRP are $130 more and I could not pass up a good deal. I trust the Ergo 5's will not be a disappointment.

Philliip D

Originally reviewed on

5 out of 5 stars

January 4, 2021

No need to buy anything else....

I've used it once or twice and have initial impressions

You know what you want from your cycling shoes: light weight, cushioning, support, and a comfortable fit. Of course, the most important part of any shoe is your experience over the hundreds of miles you'll take them on. Like running shoes and workout shoes, cycling shoes can bring you a lot of joy or a lot of pain. Choosing the correct fit is key for comfort. If you don't, you may end up with blisters and cramps in your arches -- ouch. I originally purchased the 43.5 and they were an inch to big. Competitive Cyclist was quick to turn around and send me 42.5. If you have flat feet like myself, you don't have to suffer from ill-fitting cycling shoes anymore. These are the ones! It was like Cinderellla putting on her glass slipper on for a perfect fit! I think this is one of the best cycling shoes for flat feet. The Mega is ergonomically designed to provide relief for those with flat feet or heel and foot pain from any cause. If you have flat feet and are looking for a comfortable pair of cycling slippers these are the one!

Carlo G

Originally reviewed on

5 out of 5 stars

December 13, 2020

Consistently great for years

I've put it through the wringer
Size Bought:

So, a few months ago, a cycling buddy said to me, "Sidis suck. You should try something else." I have been wearing Sidis for decades, but then was thinking, maybe they are a little too whipped out, maybe too big by a 1/2 size; my mind started working on me. I was using my mtb shoes on my road bike anyway, so I bought some road pedals and I started doing research on who makes the wide style shoes. I tried on: Bont (shipped from England!) Shimano S-Phyre Specialized S-Works New Sidis in 43.5 and 44 to compare. The Bonts were instantly the wrong thing, like trying to jam my foot into a wooden box. I actually bought and wore the Shimanos for a while, convincing myself that they were ok. They just became too narrow, in odd places that I couldn't figure out. I needed more research. I put my mountain pedals back on my road bike and dug deeper. With my Shimanos, the Specialized, and the Sidis, I tried them on over days, with different socks, in different moods; I tried to make it a longer process, and my wife was just scratching her head again and again. In the end the Specs had a better (wider) toe box than the Shimanos and I almost went with them. But what I realized is that both the Specs and the Shimanos have heel cups that extend forward on the outside of the shoe, that pushed on the outside metatarsal just as it hits the ankle. That bone sticks out a little. The Sidis cup surrounds the heel, and doesn't continue forward, so that bone doesn't get pushed. And there is more room in the toe; I definitely don't have my big toe touching anything. I have a photo there of the Spec shoe. It was an interesting study, and maybe needed, but I will stick with my Sidis because they actually really don't suck. I will keep buying!

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Luke S