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LakeMXZ304 Mountain Bike Shoe - Men's


Item # LKC002R

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  • Black, 41.0 ($329.99)
  • Black, 45.0 ($329.99)
  • Black, 47.0 ($329.99)
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Item # LKC002R

MXZ304 Mountain Bike Shoe

As a dedicated winter rider who pedals up frozen streams and across snowy singletrack, you know how important it is to have warm footwear that protects your feet from the elements. Lake was one of the first companies to make a dedicated winter cycling boot, and the new MXZ304 is their best one yet. A larger BOA dial is moved to the front of the tongue, making it easier to use with winter gloves and providing a more even tension across the top of your foot. Otherwise the construction remains similar the previous model, consisting of highly weather-resistant Pittards leather that molds to the shape of your foot for optimal comfort, and a heavy-duty Vibram outsole that provides maximum traction both on and off the bike. Plus, they're filled with lightweight Thinsulate insulation, keeping your toes warm when you're out in the snowy woods for hours at a time.

  • Warm cycling boot for fatbiking and winter mountain biking
  • Larger boa dial allows easier adjustment with winter gloves
  • Pittards uppers block the elements and mold to your feet for comfort
  • Durable Vibram outsole finds traction in icy conditions
  • Outlast liner regulates temperature and prevents clammy feet
  • Thinsulate insulation keeps your toes nice and toasty
  • Winter last is wider and taller to accommodate winter socks
  • Lake recommends sizing up 1 - 1.5 sizes if using with thick winter socks

Tech Specs
Upper MaterialPittards® WR100 leather, Helcor® abrasion-resistant toe and ankle guard
Lining[lining] Outlast® temperature regulating liner, [toe box] 3M® Thinsulate® lining
ClosureBOA® dial, hook-and-loop strap
FootbedThermosol composoite insulated insole
Midsolefiberglass-injected high-impact nylon
Sole[outsole] heavy-duty Vibram® Mountain V
Cleat Compatibility2-bolt
Manufacturer Warranty2 years


Cycling Footwear
36 4.5 5.5 224.5 - 227
37 5.5 6.5 230.5 - 234
37.5 6 7 234.5 - 237
38 6.5 7.5 237.5 - 240
38.5 6.75 7.75 240.5 - 243
39 7 8 243.5 - 246
39.5 7.5 8.5 246.5 - 250
40 7.75 8.75 250.5 - 253
40.5 8 9 253.5 - 256
41 8.5 9.5 256.5 - 260
41.5 9 10 260.5 - 263
42 9.5 10.5 263.5 - 266
42.5 9.75 11 266.5 - 270
43 10 11.5 270.5 - 273
43.5 10.5   273.5 - 276
44 11   276.5 - 280
44.5 11.5   280.5 - 283
45 11.75   283.5 - 286
45.5 12   286.5 - 290
46 12.5   290.5 - 293
46.5 13   293.5 - 296
47 13.5   296.5 - 300
48 14   303.5 - 306
50 15   313.5 - 316.5
How to Measure:
Take your foot measurement In a standing position while wearing your cycling socks.
Step 1: Trace your foot onto a sheet of paper.
After you trace your foot take a ruler and make a line to mark the furthest point on all four sides.
Step 2: Length measurement.
Use a millimeter ruler to get the measurement of the longest distance from heel to longest toe (first or second toe).
Step 3: Width measurement.
Use a millimeter ruler to get the measurement of the widest distance of foot from side to side.
Step 4: Repeat steps for other foot as your feet may be different sizes.
Typically you will want shoes that accommodate your largest foot the most comfortably.
Add 5mm to your actual length measurement to get recommended size.
Please Note: for accurate measurement please obtain a 3 digit millimeter measurement. Accurate measurements cannot be obtained from only 2 digits.

What do you think about this product?


>Rating: 3

Love | Hate

I've put it through the wringer
True to size
Size Bought
195 lbs

Winter riding - Boston - 27 degrees coldest temp Absolutely beautiful boot. Craftsmanship flawless. Wonderful winter patina developed after snow, road salt and many muck rides. Worked like a dream on Shimano XTR pedals. However, for a high-top boot, having 1 BOA is -- less than ideal++. The BOA is on the top shin cuff, which tightens down like a glove, but leaves the top of foot loose as a goose. So simple, yes? The boot needs 2 BOAs, 1 to tighten top of foot and 2 to secure the top of shin. Trying to pull the 'wire sharp' BOA laces by hand over the lower foot , build up all the slack, and then ratchet down everything from the top was -- meh, half-azzed at best. This made for the process of putting the boot on and off like that of a ski boot. A frustrating freakin process, especially when sitting outside in very cold temps coming from vehicle and gearing up for a ride. Did they keep my feet warm? Mostly, yes. I can't judge this with confidence as I have a foot that always returns near frostbite no matter. Lastly, although that 1 BOA on the shin cuff tightens down, during the ride it always seemed to open up -- upon home, I was amazed at how much sand and shat from the road made its way into the boot. WTH? Would I toss them? No! Would I recommend them? With caveats as shared.

>Rating: 5

Worth the money

I've used it several times
True to size
Size Bought

I have been riding in the winter for a couple of years now. I have used shoe covers and/or toe covers for my road shoes. They are okay for me down to about 40 degrees. However, below that, it would get a little cold even with using electrical tape to cover cooling vents and chemical warmers. A friend told me an older model of these boots “transformed” his winter riding experience. I bought these new ones, and completely agree. I can use them even as warm as the 40s and be super comfortable. I bought a half size up and got the wide version for my wide feet (my other shoes are not available in wide). I am not a fan of the flap that covers the boa laces in terms of getting in and out of the boots, but it probably helps with keeping out the wind and snow. The boots look large, but are surprisingly light-weight. Feels like maybe 1.5 times the weight of my PEARL iZUMi X-Project P.R.O. shoes, which are very light mtb shoes. The minimal added weight is completely worth it unless maybe if you are in an actual race.

I just got mine and thanks for the review. I had the older version of the same shoe and found the closure mechanisms much better than the new one. One Boa for the whole boot is not enough and it takes a while to get a good fit. As you say, the flap in the current model is poorly designed. What is your strategy to opening and closing it? I find I have to undo the velcro AND unclip the stupid buckle and then re-attach both. And the little buckle is a terrible design.

>Rating: 5

My toes are finally happy and warm

I've used it several times
Runs small
Size Bought
5` 5"
134 lbs

This is my first year cycling through the winter, and despite having a new pair of winter cycling shoes of a different brand, my toes were still cold! I tried a variety of different socks, even toe warmers, but ultimately those new shoes did not work for me (and the toe box area was too narrow so I was also getting numb toes!). I tried my husband's pair of these LAKE boots (the 303 model) and they were awesome! My toes stayed warm and plenty of room to move them around while still having a very good fit. I bought myself a pair of these and I am finally fully cozy and warm and enjoying my winter riding with no complaints! I'm normally a women's 9 (41), but moved up to a 42 for a more comfortable fit.