Shimano has just released an improved model of their M300 mountain bike shoe, which is now called the M310. For those of who haven’t seen or considered these shoes, you may very well be impressed. With an updated moldable upper, an improved carbon fiber midsole, and two colors to choose from (basic black or bling bling silver with red highlights), the M310s are a solid choice for the trail.

If you’re looking for comfort, light weight, and performance in a MTB shoe, listen up. The Shimano M310s are labeled as elite competition shoes and that’s because they are some of the most comfortable, precise shoes you can purchase. Don’t let the pro-level designation scare you off – even regular Joes deserve a great pair of MTB shoes!

A bit about the M310s from the Shimano website:

  • Moldable upper forms to foot for a precise custom fit
  • Modable insole forms to foot for a precise fit with anti-bacterium treatment
  • Full-length stiff carbon fiber mid-sole with dual injection polyamide-polyurethane outer transfers your energy straight to the pedals, and allows compliance and grip for hike sections
  • Composite toe spikes increases traction in sand or loose dirt
  • Asymmetric buckle & dual off-set straps securely holds foot and allows subtle adjustments. Off-set straps prevent pressure points
  • Durable synthetic leather upper provides foot protection and excellent durability
  • Anti-slip heel lining knitted with metal fiber prevents heel lift
  • Available in E-width for wide feet

After purchasing the M310s from my LBS (Cyclepath North York), I made an appointment at Sporting Life where they have Shimano-specific equipment to heat-mold the shoes. With the help of the store manager Keith, the shoes were ready to go in less than an hour. One word of advice: due to the fact that these shoes work best after a custom fitting, I strongly recommend getting these shoes at a retailer that has the equipment on site. Not all shops carry the equipment and some will charge for this feature if you have not purchased the shoes from them so if you purchase these shoes online, expect to pay up to $50.00 for the service (which takes a good three quarters of an hour – make an appointment).

I HIGHLY recommend having these shoes molded to your foot – it makes a night and day difference and is well worth the cash. Hitting the trails with the M310s I noticed right away that my feet didn’t move in the shoes and there were no pressure points anywhere on my foot. With the new shoes my pedaling felt more efficient since my foot wasn’t moving around inside the shoe at all. I did, however, have to increase my pedals spring tension because I noticed my foot started sliding around the pedal a bit more. Going for a few long rides I expected the shoe to stretch out or change how it felt but that didn’t seem to happen – the fit was constant after hours of riding. The soles on the M310s are pretty basic and provide just moderate traction on the dirt. If you need something with a bit more bite you may want to look elsewhere – consider the Shimano M230 which is partially moldable but has more of a tread pattern.


Overall these shoes are super comfortable, fit great, and are light and breathable. The downside is the M310s are a bit overpriced and you have to lay out additional cash to get the MTB shoe fit just right. I’ll also be keeping my eye on the minimal rear sole tread which may need replacing in the near future (I’ll keep you posted).


# Comments

  • GoldenGoose

    Element, do you know off hand if these shoes are basically rebuildable like Sidi shoes? The fitting system seems pretty snazzy but I’d hate to drop ~$300 for a shoe that simply wears out with use. BTW, you mentioned that the M-230 is only partially moldable. Do you know the differences in the two off the top of your head?

  • element22

    The shoe is not rebuildable..It has a very tough sole Carbon and toughen polyurathane.. Now the difference between the M-310 and the M-230 is that the 230 only has the heal cup that is mouldable while the 310 is fully. Also the treads underneath are totally different the 230 has a more agressive undersole while the 310 is more oriented for the Racer.. Personally (and I had this conversation with one rep at a show in Toronto) I wish they had a fully mouldable shoe with the sole from the 230 / 182.. But I can’t stress enough the difference between a regular shoe and these moulded ones.

  • GoldenGoose

    Are there any other moldable biking shoes out there that you know of? It seems like a great idea and I’m surprised no one else has thought of it (or something like it ) yet.

  • element22

    You got me there I am not sure I would have to check but I will get back to you.

  • element22

    I went to a couple shoe manufactures and the ones I checked (Specialized, North Wave, Mavic, Sidi, Gaerne, Sixsixone) all do not offer the molding of the upper sole. Some offer different insoles and there are some aftermarket soles that mold to the feet but other than that..Nope.

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