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Sidi Kaos Carbon Shoes - Men's

Sale $179.97 - $299.95

Item # SID004S

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  • White/Orange Fluo, 42.0 ($179.97)
  • White/Orange Fluo, 42.5 ($179.97)
  • White/Orange Fluo, 43.0 ($179.97)
  • White/Orange Fluo, 43.5 ($179.97)
  • White/Orange Fluo, 44.0 ($179.97)
  • White/Orange Fluo, 44.5 ($179.97)
  • White/Orange Fluo, 45.0 ($179.97)
  • White/Orange Fluo, 45.5 ($179.97)
  • White/Orange Fluo, 46.0 ($179.97)
  • White/Orange Fluo, 46.5 ($179.97)
  • White/Orange Fluo, 47.0 ($179.97)
  • White/Orange Fluo, 48.0 ($179.97)
  • Black, 39.0 ($299.95)
  • Black, 39.5 ($299.95)
  • Black, 40.0 ($299.95)
  • Black, 40.5 ($299.95)
  • Black, 41.0 ($299.95)
  • Black, 42.0 ($299.95)
  • Black, 42.5 ($299.95)
  • Black, 43.0 ($299.95)
  • Black, 43.5 ($299.95)
  • Black, 44.0 ($299.95)
  • Black, 44.5 ($299.95)
  • Black, 46.0 ($299.95)
  • Black, 46.5 ($299.95)
  • Black, 47.0 ($299.95)
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Item # SID004S

Anarchy.

For 2015, Sidi's orderly line of fastening options has been thrown into chaotic anarchy. The clear divide between models with the traditional ratcheting buckle we've been enjoying for decades and models with the sleek new Tecno-3 buckle has been shattered by the all-new Kaos Carbon Shoes, which bring the two fastening systems together with Sidi's versatile Millenium 4 outsole.

The Kaos shoes incorporate both a traditional ratcheting buckle at the top and the Tecno-3 wire dial for the mid- and forefoot. The Tecno-3 buckle operates like a quick-release hub: flip the lever up to open it, turn to tighten, and flip it down to lock your fit in place. The wire itself is both non-binding and non-stretch, so it adjusts smoothly without loosening over the course of your ride. Of course, one of the joys of owning Sidi shoes is mid-ride fiddling, so rest assured that both buckles are easily adjustable while in the saddle. The shoes also have the same amount of instep padding as Basso's own favorites, the Genius 6.6, so you can ratchet these puppies down with impunity.

The outsole is a nylon matrix shot through with carbon fiber, blending weight, stiffness, and price in a sole that's as ready to race as it is to spin through a charity ride century. It also resists warping due to humidity, heat, and age, so you'll be wearing the Kaos Shoes long after you've worn out and replaced the heel pad. If you've ever lost a buckle to a crash, then you'll also be happy to know that all of the shoes' hardware is also replaceable.

  • Road Cycling 3-hole cleat compatible
  • Millenium 4 Outsole
  • Ratcheting buckle and Techno-3 wire for added security

Tech Specs

Upper Material:
synthetic leather
Closure:
ratcheting buckle, Techno 3
Sole:
Millenium 4 Carbon Composite
Cleat Compatibility:
3-hole road
Recommended Use:
road
Manufacturer Warranty:
1 year

Size chart

Cycling Shoes

Men's
US SHOE SIZE5.566.577.588.599.51010.51111.51212.51313.514
Chrome 37.5 38 39 39.5 40 41 41.5 42 43 44 44.5 45 46 47   47.5   48
Diadora 38 39 39.5 40 40.5 41 42 42.5 43 43.5 44 44.5 45 45.5 46     
DMT 38   39   40 41 42 42.5 43 43.5 44.5 45 45.5 46   47 48  
Five Ten 37 38 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 46 46.5 47   
Fi'zi:k 38 39 39.5 40 40.5 41 42 42.5 43 43.5 44 44.5 45 45.5 46     
Gaerne 38 39   40   41 42 42.5 43 44 44.5 45   46 47 48   
Giro   39 40 40.5 41 42 42.5 43 43.5 44.5 45 45.5 46 46.5 47 48  
Lake 39.5 40 40.5 41 41.5 42 42.5 43 43.5 44 44.5 45 45.5 46 46.5 47 48  
Louis Garneau 38.5 39 39.5 40 40.5 41 41.5 42 43 44 44.5/45 45.5 46 47 48 49 50
Mavic (US/EU) 5.5 / 38 6 / 38.7 6.5 / 39.3 7 / 40 7.5 / 40.7 8 / 41.3 8.5 / 42 9 / 42.7 9.5 / 43.3 10 / 44 10.5/ 44.7 11 / 45.3 11.5 / 46 12 / 46.7 12.5 / 47.3 13 / 48 13.5 / 48.7  
Northwave 37   38 39 40 40.5 41 41.5 42 42.5 43 44 44.5 45 45.5 46 47 48
Pearl Izumi 38 39 39.5 40 41 41.5 42 42.5 43 44 44.5 45 46 46.5 47 48 48.5 49
Shimano 38.5 39.5 40 40.5 41 41.5 42 43 44 44.5 45 45.5 46.5 47   49   50
Sidi  39 40 40.5 41 41.5 42 / 42.5 43 43.5 44 / 44.5 45 45.5 46 / 46.5 47 47.5 48 48.5 49
Six Six One 38 38.5 39 40 40.5 41 42 43 43.5 44 44.5 45   46 47 48 49 50
Suplest 37 38   39 40 41   42 42.5 43 43.5 44 44.5 45   46   47
Vans 37 38 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 46   47   48
US SHOE SIZE5.566.577.588.599.51010.51111.51212.51313.514

Reviews & Community

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SIDI - consistency

  • Fit: True to size

I always find SIDI to be the most consistent in build and size from generation to generation. This shoe here is the Ultegra of Shimano, it has just about everything DA has but half the price. The material will stay white for long time and there is very little fabric that will turn yellowish over time around the ankle. With a little soap the fabric can be kept flat white for a long time also. Just like every other SIDI you don't buy new ones because you wore out the old ones, these things last. I have SIDI's from 10 years ago still look great. Money well spent.

Everything I expected and wanted

  • Fit: True to size
  • Size Bought: 46.5

As a long-time Sidi user, I wanted a more customizable fit than I had had with the Genius 5 - which I loved and used for 10 years. I have a high instep and a "bump" on the top of one foot, so sometimes the mid-foot straps would generate uneven pressure and occasional discomfort on longer rides. The Techno 3 ratchet system seemed a great idea, so first I tried the Wire Vent Carbon shoe. Because of my high instep and the Techno 3 top buckle which restricted my ability to open the shoe fully, I had trouble getting into the shoe. I then tried the Kaos, which uses the more traditional caliper buckle on the top and the Techno 3 ratchet system for the mid-foot and toe. As I had hoped, the Techno 3 system applies an even pressure across the entire top of the foot - even where my "bump" has caused discomfort in the past. The ratchets can be dialed tighter or looser with great precision. The top caliper buckle enables me to open fully and get into the shoe easily, and when tightened it holds the top of the foot snugly and comfortably. The upper is supple and quite comfortable as well. The sole is stiff allowing for an efficient transfer of power. My only unfulfilled wish is that the Kaos doesn't have the Adjustable Heel Retention Device that the Wire Vent Carbon had - a terrific feature. All in all however, this is a great shoe, and it delivers everything that I had hoped for in a high quality (and, yes, expensive) road shoe.

Nice looking shoe but had fit issues

  • Fit: Runs large

Try this on before you install the cleats. My experience may a fluke but I had some issues with discomfort that I have not experienced with any other Sidi shoes. To begin, the polished appearance is nice. The fastening system is also really nice. The top position is tightened with a user-friendly ratchet buckle. Below that, a single wire-type dial can be rotated to tighten the 2nd and 3rd position, which is convenient (2 adjustments rather than 3). However -- the tongue felt sharp and high, and it cut into my ankle. I thought it might break in after a few rides, but no - I had to wear thick socks to protect my ankle from the sharp tongue. The overall fit felt deeper than my Genius 6.6, and the sole I think is also thicker than my 6.6 that I was replacing, so I had problems getting comfortable with these, and I ended up switching to another shoe.

Your supposed to cut Sidi tongues. Any retailer should have told you that. There is even instructional videos online

Really?? Thanks Anthony K. I've been wearing Sidi many years now and this was the first time I had a problem. This is also the first time I've heard about a need to cut the tongues. I'll research it a bit further.

I highly recommend these shoes.

  • Familiarity: I've put it through the wringer
  • Fit: True to size

My carbon road shoes have 4K miles on them, so I thought I'd move them to wet weather shoes and buy a replacement for routine use. After some research, I thought that the Sidi Kaos had great value for the construction, manufacturer reputation, and, frankly, looks - for a great price. I ordered a 44 and a 45, because that's what I wear depending on the manufacturer. These run a little on the larger size, so the 45's were perfect. First ride was ~50 miles and they were comfortable, stiff, and very easy to adjust for the perfect cleat placement on the ride.

Avg. ride time: 35m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Do they make Mega sizes anymore? Looking for 46.5 Mega in fluo

Best Answer

The Genius 6.6 Vent is the only Sidi we have available right in a wide fit. Let me know if you have any other questions. btowery@backcountry.com

Avg. ride time: 3h 24m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Are these available in a size 42 Mega for wide feet?

Best Answer

Second that question! Mega size please?