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CX403 Cycling Shoe - Men's

4 out of 5 stars
3 Reviews
Current price: $329.99 Original price: $549.99
40% off


Size Chart


CX403 Cycling Shoe

Lake’s top-tier road shoe gets an update in the new CX403. Featuring the same custom fit carbon fiber sole and supple kangaroo leather upper as its predecessor, the CX403’s closure system is redesigned and the added rubber toe bumper helps extend the shoe’s longevity for all the training and racing ahead this season.

Lake has worked long and hard on building the ultra-efficient Custom Fit carbon fiber sole. You may have had carbon-soled shoes in the past that didn’t quite fit, and if that’s the case, you recognize that ultimate power transfer is meaningless if your feet are in agony. But you can say goodbye to the era of compromise, as these are heat moldable, ensuring the perfect fit and incredible heel hold for maximum power transfer.


  • Unrivaled cycling shoes for the discerning racer
  • Stiff carbon sole can be heat-molded to your foot
  • Kangaroo leather is supple and forms to foot
  • Dual Boa closures dial fit without undue weight gain or bulk
  • Race Plus last, see size chart for fit information
  • Item #LKCZ02F
Upper Material
Klite Kangaroo leather, Carbitex CX6 carbon fiber
perforated kangaroo leather
dual IP1 BOA or dual Li2 BOA
Custom Fit Carbon Fiber sole
Cleat Compatibility
3-bolt road
Claimed Weight
[single, size 41.5] 10.9oz (309g)
Manufacturer Warranty
2 years

Overall Rating

4 based on 3 ratings

Review Summary

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

Fits Slightly Small

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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2 out of 5 stars

December 7, 2023

These shoes run small

I've put it through the wringer
Size Bought:
5' 10"

First off, these shoes run 1/2 to a full size smaller than the 402 model it replaces and possibly narrower. I have middle of the road medium 43.5 size feet but had to size up to 44 for the 403s and I possibly should have sized up to 44.5 or got the wide version based on the following. There is a point where the outside of my foot touches where the carbon sole gets thick leading to the arch. This is comfortable when cycling but if I walk in these shoes there is painful carbon on bone contact. Example, walking or standing around for 5 to 10 minutes prior to the ride is painful. Since the carbon is so thick in that area, there is no way to heat mold the sole to fit better. To be fair, I have the same issue with the 402 generation although it is a little less noticeable because that generation sizing runs larger. Note, I also have the Assos variant of the 402s which do not have the sole issue at all in the standard 43.5 size.

mem3891425 m
5 out of 5 stars

February 12, 2023


I've put it through the wringer
Size Bought:
6' 1"

When I first got the shoes , it took three times to mold them and get it really right. Now it’s really the only shoe I ride on. I have really nice high-end shoes from other brands. None of them feel like the lake product to me and the company is really easy to deal with, if you have any questions or you need to trade sizes, no questions were ask.

Troy W
5 out of 5 stars

January 4, 2022

For me, absolutely perfect.

I've put it through the wringer
Size Bought:

Perfect. That's how I'd rate these shoes. After trying many different brands, at many different price points, I've found the most comfortable shoe on the market. I've probably used these shoes for 800+ miles, and can't find anything wrong with them. in other shoes, I'd inevitably find hot spots or other aches on long rides, but not these. Out of the box, they fit my narrow feet without the need to heat mold them; and with each ride they have become more comfortable. The leather is very high quality, as is the whole construction. The price is a bit daunting. However, had I initially purchased them when I first became aware of them, I would have saved a ton of money over the years. They also have a shoe care kit that I purchased. With proper maintenance of the leather, I can see these lasting almost indefinitely.

Brian L