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Item # LKC000B

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Item # LKC000B

The trails await.

Lake based the construction of its MX331 Shoes around Klite kangaroo leather. And while this might sound too exotic to be durable, quite the opposite is actually true. Lake uses this material for many of its shoes for a good reason. What is it? Well, because it provides the ideal balance between suppleness and strength. Additionally, for a leather, it's also pretty breathable — an added perk given that these shoes are intended for races that could make your eyeballs sweat. However, to ensure that you don't overheat, Lake strategically placed mesh around the uppers of the MX331. This concept has been furthered at the liner for both the heel and tongue, as Lake incorporated its Outlast temperature-regulating fabric. As a result, your feet will remain at a consistent, comfortable temperature, regardless of whether it's hot or cold out.

Moving on to the last of the shoes, we find Lake's CFC Race Last. This last was specifically designed for enhancing power transfer to the pedals. Lake achieved this by purposefully positioning the foot in a manner that directs its energy to the pedal and to the soil.

And that leads us to the most exciting features of the MX331: its outsole and tread design. Starting with the former, Lake used its Lake Race carbon fiber sole. Of course, carbon fiber provides the optimal amount of rigidity for power transfer. However, what's interesting about Lake's design is just how much carbon fiber there actually is. The outsole features what Lake refers to as "cleat pockets," which house the modular rubber treads.

Lastly, to ensure that you experience an ideal, consistent, and powerful fit, the MX331 features the venerable BOA Push/Pull retention system. Advantages of this system include a nearly limitless level of volume customization, a complete lack of pressure points, and around a two-thirds weight drop. On top of this, BOA uses aircraft-grade stainless steel to account for heightened durability. You'll also find that Lake made the heel cup of the MX331 fully-moldable. So, you never have to experience the power-sapping effects of heel-slippage.

The Lake MX331 Shoes are available in the colors Black/silver and Black/red and in odd and even sizes from 39.0 to 50.0. Please note that these shoes are only compatible with two-hole mountain bike cleat systems.

  • Kangaroo leather uppers
  • Carbon fiber outsole
  • CFC Race last
  • BOA retention system
  • Moldable heel cup

Tech Specs

Upper Material:
[last] Klite kangaroo leather, [upper] mesh, [heel counter] Thermaform carbon fiber
carbon fiber
Cleat Compatibility:
2-hole MTB
Recommended Use:
all mountain
Manufacturer Warranty:
1 year

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...


Great Shoe + Excellent Customer Service

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

Purchased the Black/Red version of these in 2014.

Loved this shoe until the Boa detached from the side of the shoe (See Todd Munson's review, below). Was past the Competitive Cyclist warranty return period (1 year), so I thought I'd try contacting Lake directly. Got a reply email from Lake within minutes with directions on how to get a repair through Boa. Boa was equally responsive and provided details on a no-charge repair.

My only knock on these shoes would be durability, particularly with the Boa integration with the shoe, but considering the excellent experience that I had with both Lake and Boa, I'd certainly consider Lake as a top option for future shoe purchases.


Different Shoes...

  • Familiarity:I've used it several times

Lake did it's customers a disservice by giving two very different shoes the same model name. The lighter orange/black shoe is their 'cross-specific version with minimal tread, lighter weight, and a different fit from the other version that is more oriented toward mountain biking. I own both versions. The 'cross version is extremely stiff, comfortable and light, and so far excellent. The mountain version are a bit narrower, noticeably heavier, still stiff, and so far problem-free but not quite as sweet as the 'cross version.

Avg. ride time: 1h 11m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Most comfortable shoe that I hate

  • Familiarity:I've used it several times

Shoe fits great but for me it the grip on the bottom makes it more difficult to clip in and the BOA broke after less then 20 hours of use.

Most comfortable shoe that I hate
Avg. ride time: 1h 47m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Broke within 30 hours of use.

  • Familiarity:I've put it through the wringer

The Boa unit ripped itself right out of the shoe. Until that happened, they were mostly great. Definitely avoid these no matter how low the closeout price goes. Due to Lake's lack of customer service it took a full 39 days for Competitive Cyclist to get a warranty claim approved.

See my full review here:

Broke within 30 hours of use.

Are these shoes good for below freezing temps?

Unanswered Question

Wouldn't the BOA get jammed if you got...

Wouldn't the BOA get jammed if you got mud/sand it the lace track.


great shoe

  • Familiarity:I've put it through the wringer

I got a pair of these recently and absolutely love them. They are very comfortable,light weight and just stiff enough in the toe to dig through the muddy trenches of cross racing with ease.The kangaroo leather is very soft and gives the shoe a glove like fit and the boa system really confirms to the geometry of your foot. If you have the means I highly recommend picking these up.

How do find the sizing? How does it compare to your other shoes, both street and cycling? Thanks!

They run true to size. I wear a US size 11 and got the 45 and it is spot on

Not so for women's shoe. They run small. My step-daughter is a size 8 (39) and had to go up to size 9 (40) to fit her correctly. She normally wears an 8 so this was a surprise when they showed up and were way too small. Also, likely you will be wearing thicker socks with these shoes, so might want to consider half a size anyway, IMHO.