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Item # SUG0843

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Item # SUG0843


What makes a great set of mountain bike shorts? Some would argue that it's a comfortable fit, while others may point to stretchy fabrics or an anatomic chamois. Thankfully, though, the Sugoi RSX Shorts check all of these boxes, while also adding a BOA waist adjustment to the equation.

Sugoi built the RSX shorts out of its proprietary RS Flex fabric. Why? Well, it's the combination of its built-in stretch, quick-drying knit, and water-resistance characteristics that make the RS Flex an ideal candidate for trail riding duties. And, as the name implies, the RS Flex material moves with you as you pedal instead of bunching. And because it's both water-resistant and quick-drying, you gain a much needed protection from the elements. After all, we've found that staying dry is essential to all-day comfort in the saddle.

The contoured cut of the shorts is shaped for pedaling. So, when couple with the RS Flex fabric, the RSX shorts move with you in a way that feels natural. And to boost the comfort even further, Sugoi included a BOA L5 dial for precise adjustment of the waist. That's right, that BOA L5 found on the world's most top-tier of cycling shoes. So, you're able to incrementally, micro-adjust your fit, and the BOA closure ensures that the fit stays put throughout the duration of your ride.

The RSX's removable liner is built around Sugoi's Formula FX chamois. This insert is built with an anatomic shape, which relieves pressure from your sensitive nerves. To do so, the design transfers pressure to your sit bones, which are far more adept at supporting your body weight. And in conjunction with the shape, four-way stretch panels ensure that the chamois moves with you, instead of bunching or chafing. Furthering the chafe-fighting properties, this insert is seam-free. So, you don't need to worry about any irritation at the seams.

The Sugoi RSX Shorts are available in five sizes from Small to XX-Large and in the colors Black/black and Concrete/cyan.

Tech Specs

Removable Chamois:
yes, removable liner with attached chamois
yes, Formula FX
side vents
[shorts] RS Flex, [vented panels] mesh, [lining] Icefil
Recommended Use:
mountain biking
Manufacturer Warranty:
30 days
Chamois Thickness:

Size chart

Fuji Bicycles


Geometry Chart


Altamira LTD

Seat Tube


Effective Top Tube








Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Drop


Chainstay Length



44 44.0cm 51.5cm


36.3cm 72.1cm


72.0 deg 75.0 deg 6.9cm 40.5cm 97.1cm
47 47.0cm 53.0cm


37.0cm 74.1cm 13.0cm 72.5 deg 74.5 deg 6.9cm 40.5cm 97.7cm
50 50.0cm 54.5cm 54.0cm 37.0cm 76.0cm 14.0cm 73.0 deg 73.5 deg 6.9cm 40.5cm 97.6cm
53 53.0cm 56.0cm 56.0cm 37.9cm 78.3cm 16.0cm 73.5 deg 73.5 deg 6.9cm 40.5cm 98.6cm
55 55.0cm 57.5cm 58.0cm 38.9cm 80.1cm 18.0cm 73.5 deg 73.5 deg 6.9cm 40.5cm 100.1cm
58 58.0cm 59.0cm 60.1cm 39.7cm 82.1cm 20.0cm 74.0 deg 73.5 deg 6.9cm 40.5cm


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Here's what others have to say...


Love/hate these shorts

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

I like some things about these shorts, and I hate some things about these shorts. Love the fit, material and liner. XL fits great (5' 11", 220). length is just above the knee. Material stretches nicely. The liner breathes well, and has lots of padding for longer rides. Hate (Ok, hate is a little strong) the snaps and the BOA adjustments. The snaps will unsnap occasionally. The BOA adjustments are a cool concept, but not really necessary. You can dial the waist adjustment, which is easy and cool, but the adjusters will also pop open once in a while. They are more of a gimmick than anything. Velcro would have been fine. Overall, I would say I like the shorts since they fit great, and breathe well.


Good shorts, odd sizing

  • Familiarity:I've used it several times

Great, high quality materials. I've used them 5-6 times with as many washes and no issues. Chamois was not removable with the shorts I received, no big deal.

The chamois is a good fit but the shell waist is huge (XL). Thank goodness for the adjusters. I didnt realize my thigh and waist sizes were so out of wack.

These were 1 of my first 2 bike short I bought. With only one pocket, I find myself reaching for my other pair a lot.

I wear a 32 in some brands and a 34 in...

I wear a 32 in some brands and a 34 in others. I have larger thighs and glutes than most. Medium or large?

Best Answer


A lot of clothing companies use "vanity sizing" where the number on the tag is smaller then the measured circumference of the waist band. I have not found this to be the case with Sugoi. Take a measurement of your waist and order the appropriate size. You'll get a good fit!

I agree. I am 6' 195# and wear a 34" in Fox shorts, but the large size Sugoi were too small for me and a little too snug at the thighs.


High end mountain shorts

  • Familiarity:I've used it several times
  • Fit:True to size

I've only ridden with them a few times, but can say that these shorts are both very comfortable (high end chamois) and seem durable and breathable as well. I'm a fan of Sugoi products, and on sale at least, these are definitely worth the price. I'm on the tall side, and they sit just above the knee, which is fine for me.