Free 2-Day Shipping on Orders Over $50 100% Guaranteed Returns
Memorial Day Sale
Fi'zi:k R3B Uomo Boa Carbon Shoe - Men's
Sale $164.97 - $209.96 $299.95 45% Off

Item # FIZ002G

Select options
  • Select options
  • Black/Red, 40.5 ($164.97)
  • Black/Red, 41.0 ($180.00)
  • Black/Red, 41.5 ($209.96)
  • Black/Red, 42.5 ($209.96)
  • Black/Red, 43.0 ($209.96)
  • Black/Red, 45.5 ($209.96)
  • Black/Red, 46.0 ($209.96)
  • Black/Red, 46.5 ($209.96)
  • Black/Red, 48.0 ($209.96)
  • Anthracite Green Fluo, 41.0 ($179.97)
  • Anthracite Green Fluo, 41.5 ($209.96)
  • Anthracite Green Fluo, 43.0 ($209.96)
  • Anthracite Green Fluo, 45.0 ($209.96)
  • Anthracite Green Fluo, 45.5 ($209.96)
  • White/Black, 42.0 ($209.96)
  • White/Black, 42.5 ($209.96)
  • White/Black, 43.0 ($209.96)
  • White/Black, 44.0 ($209.96)
  • White/Black, 44.5 ($209.96)
  • White/Black, 45.0 ($209.96)
  • White/Black, 45.5 ($209.96)
  • White/Black, 46.0 ($209.96)
  • White/Black, 46.5 ($179.97)
  • White/Black, 47.0 ($179.97)
  • White/Black, 48.0 ($179.97)
  • 100% Guaranteed Returns
  • Free 2-Day Shipping
    on orders over $50

Item # FIZ002G



Though technically a mid-range shoe below the R1 Uomo, the Fizik R3 should win the award for the best value for money since not only is it lighter than the R1, but it's also easier on the pocketbook.

The first flourish you will likely notice is that the R3 uses the Boa IP1 closure system. That’s significant since the Boa is one of the most effective ways you can secure your shoes with a minimum of weight but a maximum of comfort. The system allows you to micro-adjust the fit without causing any pressure points or potential hotspots. And best of all, you can make any adjustments on the fly since the dial works easily in both directions, that is whether you want to tighten the set-up in preparation for a final sprint, or if you want to loosen them after several hours in the saddle on a hot day. The uppers are made from Microtex. Stepping away from the use of kangaroo leather, Microtex is a synthetic fabric that offers both durability and comfort. It is also immensely breathable, in large part thanks to the laser-made perfect perforations. At the lower end of the foot, there is a hook-and-loop strap to make sure you can secure the shoe exactly according to your preference. It is made from a high-tech Italian sail cloth, which gives the shoes that extra touch of class.

For the insole, the shoes make use of the Fizik Cycling Insole, which is an ergonomically designed EVA insole complete with a metatarsal pad for added comfort. It will provide support and just the right amount of cushioning. You won’t have to worry about hotspots developing since the insole works completely in conjunction with the outsole. The unidirectional carbon sole offers a stiffness that will help you feel the responsiveness of every pedal stroke. The sole is compatible with any three-bolt system.

  • Laser-perforated seamless Microtex upper
  • Boa IP1 dial closure
  • Hook-and-loop forefoot strap
  • UD carbon-fiber sole
  • EVA insole with metatarsal pad

Tech Specs

Upper Material:
laser perforated Microtex
Boa IP1
UD carbon fiber
Cleat Compatibility:
3-bolt road
Claimed Weight:
[size 43] 230 g
Recommended Use:
road cycling, road racing

Size Chart


36 3 1/4 4.25 5.75 23
36.5 3 3/4 4.75 6.25 23.35
37 4 1/4 5.25 6.75 23.7
37.5 4 1/2 5.5 7 24
38 5 6 7.5 24.35
38.5 5 1/4 6.25 7.75 24.7
39 5 3/4 6.75 8.25 25
39.5 6 7 8.5 25.35
40 6 1/2 7.5 9 25.7
40.5 7 8 9.5 26
41 7.25 8.25 9.75 26.35
41.5 7.75 8.75


42 8 9 10.5 27
42.5 8.5 9.5 11 27.35
43 8.75 9.75 11.25 27.7
43.5 9.25 10.25   28
44 9.75 10.75   28.35
44.5 10 11   28.7
45 10.5 11.5   29
45.5 10.75 11.75   29.35
46 11.25 12.5   30
47 12 13   30.35
48 12.75 13.75   31

Reviews & Community


Write a review

    Add a:
  • Photos
  • Videos

No file chosen

Rather attach a photo from your computer?


Product Fit:

Runs smallTrue to sizeRuns large

Add Your Size


Height (ft, in):

Weight (lbs):

Size Purchased:

Only jpg, jpeg, png, gif or bmp files please.

Submit ReviewCancel

Best cycling shoe I ever bought.

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: 42.5

After all the great reviews I figured I’d take a shot. After all, with CC’s great return policy, what’s to lose 😉.
After cycling 10k miles/yr for the past decade I can honestly say I love this shoe. Permit fit! Normally I buy 43, but the 42.5 was priced lower by 100bucks, so I gave it a shot fits perfectly!! Feels like a slipper. That comfy! Ez to adjust on the fly. The insole has a small step under the metatarsal, so I don’t need my customized insoles to avoid burning sensation after 3hrs. Love these shoes.

R3B Mens White

  • Familiarity: I've used it several times
  • Fit: Runs large
  • Size Bought: 45

Impressed. The shoes fit extremely well right out of the box. I have a "normal" , not narrow not wide, foot shape US size 11.5. Three other brands I wear are 45.5 for a proper fit. Bill at CC advised me to go with size 45. Nailed it. Three rides so far and no soreness or hot spots. They give me a seamless connection to the pedal and respond well out of the saddle. Forgot I was wearing new shoes ten minutes into the first ride. Two hours later they were still super comfy. White shoes can be tricky to clean. Tried many methods. Tub O Towels from O'Reilly auto parts is the best. See photo.

R3B Mens White


  • Fit: Runs large

After reading reviews of the R3B, I became interested. CC had a deal going so I bit the bullet. They arrived last night, I installed a pair of my Speedplay Zero's and did the 50 mile test run. BEST shoe I've ever ridden in. I'm not a racer, but I've averaged 10K miles/yr for nearly the past decade, so function and comfort are really important to me. The shoe is totally comfortable. I normally wear a 43, but some reviewers said or ran a tad large, so I got the 42.5 and it's perfect on me. The upper provides excellent ventilation. The carbon sole insures energy gets efficiently to the pedals. A little thing which I like is the insole has a slight buildup under the metatarsal. I've had to use a metatarsal button on my other insoles, so I'm hoping this insole eliminates that need. No burning or numbness today. One reviewer said he liked these so much that he'd like Fizik to make him a dress shoe. After 3 hrs in these I understand why he said that.

Good shoe if made in Italy

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: 48

These shoes are well made, properly sized and fit like a glove if you are fortunate enough to get a pair that are made in Italy. If you get a pair made in China, all bets are off. For a fact, they are oversized - I cannot speak to the quality of the Chinese shoes.

Where can you buy replacement heal skid pads for these in the USA? I searched and did not find them?

Hi Christopher,

Replacement heel pads can be tough to come by for these shoes. The US distributor for Fizik, Highway Two, does not offer heel pads for us to purchase, however they've told me that from time to time they do have stock in which case I would suggest reaching out to them with photos to try to get replacements.

Kevin K, I have reached out to them but it would help if you could also. Seems like this would be a high margin product for you to offer clients.


R3B's are a great shoe!!

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs small
  • Size Bought: 42

Have ridden Sidi Genius shoes for 20+ years. The various versions I've had are a very good shoe but I didn't know what I was missing until I just got my first pair of R3B's. As to sizing, I am a EU 43 in Sidi but got a 42 in Fizik and they are a perfect fit. The carbon soles are noticeably stiffer then those on my newest pair of Genius and have awesome power transmission. And the adjustability of the Boa is a great feature and makes the R3B super comfortable. This is not a knock on Sidi as they have been a great shoe. But after 2 rides in my Fiziks they are a great shoe for my feet. Highly recommend them.

Avg. ride time: 10h 13m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Very comfortable if your heel will hold

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs large
  • Size Bought: 42

Construction quality is great, and the shoes feel excellent when putting them on--the upper really hugs your foot. The small toe strap combined with BOA dial allows for a very comfortable fit that feels very secure, except for heel retention. It's worth caveating that everyone's foot is different and so not everyone may experience this, and I also did not install cleats, so heel slip may not be a problem on the bike. But on the latter point, it's a bit of a Catch-22 because returning shoes once the cleats have been installed might be more difficult. I had the original R3 before these, and the new model is much more comfortable overall (the original had a ridiculous amount of arch built into the last), but the heel retention issue is new for me.

I too have the older model r3 and they fit perfectly in a 46.5. Do you feel that with this new model I should downsize to 46 or?

Hi, curious if you're still getting the heel slip after many uses. I just received my size 42.5, which is what I wear in Specialized shoes (I wear US 9.5 in pretty much every shoe and sneaker), and there's a slight bit of heel slip (without installing cleats). CC doesn't have a size 42 available, but at the sale price, I may just end up keeping them. Thanks.

Great Fit, Super Light

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: 10.5

These shoes are great. Perfect fit, super light and the boa system works well. I believe they run true to size and are not to narrow...

Very Optimistic

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size
  • Size Bought: 45 cm

4 stars so far only because I have used for one ride. The power transfer is excellent and it is very comfortable! I am not sure about the breathability yet. There are plenty of perforations on the upper but no vents on the carbon sole. The BOA system works very well and can adjust to tighten and loosen the fit. Will most likely (as usual) swap out the insole with a specialized BG.
I am returning because one of the BOA dials is defective (cable running underneath the BOA fixture). The customer service at Competitive Cyclist is great as usual for sending a replacement pair and a shipping label for sending these back! Good job. Will provide update after more rides but this is definitely worth looking in to for an upper/mid range shoe.

Excellent shoe

  • Fit: True to size
  • Size Bought: 44

After Specialized shoes for years, S-Works, Pro, I decided to try Fizik after reading the reviews. I ordered the same size I wear in Specialized and the fit is comparable, the shoe is very comfortable and I like the classic look.

John, what is your US street shoe size? Thanks!

Italian style and feather lite

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: 42

Great fit and finish. Boa system makes adjustment easy. Carbon bottom provides stiffness. However, don't walk too far on gravel or they will scratch. Without a doubt, one of the lightest shoes on the market.

Spectacular road shoes

  • Fit: True to size
  • Size Bought: 42.5

25+yrs riding in shoes including Carnac, Rocket7 (semi custom), DMT, and others, can say these are some of the best straight out of the box. The high fit and finish are the first thing you notice. About 300 miles in and the shoes feel fantastic on my feet, light to spin, and these clearly helping to generate additional watts on both the flats and the climbs by rounding out my pedal stroke.

Heel lifts out of shoe

    I'm a size 10-10.5 and the 43's fit great, except when I put pressure on the ball of my foot (off bike), my heel lifts a good inch out of the shoe. Even when super tight this still happens. Maybe just me, but going back to strap enclosures.

    Unanswered Question

    Hi !
    In sidis im Eur43.5
    Northwave Eur 42- us 9.5- cm 27.5
    Sneakers new balance 990 im Eur 43- us 9.5 -cm 27.5 And they all fit just right.
    According to the size cart above for a us 9.5 i should get a 42.5. Or should i get 43? Do they run small?
    Please compare it to some other bike shoes or sneakers so i can have an idea of what size should i get. Thanks. Gino

    light, stiff but comfortable!

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: 43

    After wearing Sidi's for many years, was drawn to the lightweight, comfort inherent in the Boa closure system, and clean look - and these have lived up to my hopes/expectations!

    Hi ! What size on sidi's do you wear?
    In sidis im Eur43.5
    Northwave Eur 42- us 9.5- cm 27.5
    In my running new balance 990 im
    Eur 43- us 9.5 -cm 27.5
    And they all fit just right.
    Could you please compare it to some other regular sneakers and bike shoes?
    According to the size cart above for a us 9.5 i should get a 42.5. Or should i get 43?
    Please compare it to some other bike shoes or sneakers so i can have an idea of what size should i get.
    Thanks. Gino

    What size Sidi do you wear. In between sizes usually.

    Are these the 2015 or 2016 models? I noticed on the Fizik website that the 2016 have a black tongue paded area.

    2016, i have a pair of 2015 ones and their insoles are white. The 2016 ones have black insoles.

    Good but not great

    • Familiarity: I've put it through the wringer
    • Fit: Runs small
    • Size Bought: 43

    I have used
    sidi's for the last 20 years and thought I would give another brand a try since there were some things about my last pair I was not thrilled with. The fiziks are narrow for there size. If your foot is a eee like mine look elsewhere. If you run your hand on the inside if this shoe you will feel just how rough it is. The Sidi is so much smoother and your feet can feel the difference. However the worst part of this shoe at least for me is how high up the ankle collar comes on the inside. It does not have the same radius as the outside of the shoe so when you ankle it drives right into the skin above the ankle. It seems to be breaking in but it is annoying. On the bright side the closing system in great and easy to use on the fly. The shoe feels very stiff and is all business when you put the hammer down. The just aren't as comfortable as I had hoped

    Great Shoe

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: 44

    I bought the R3B to replace a pair of S works. They fit great out of the box. I love the white very simple classic look. The Boa provides secure hold and the shoes breath very well. The carbon sole is stiff and transfers power for me extremely well. I wold definitely recommend them. Great shoe and of course made in Italy.

    Great Performing/Looking Shoes

    • Familiarity: I've put it through the wringer
    • Size Bought: 42

    I've been training and racing in these shoes for about 3 months now and they've been great. The length is a little off for me and I had to return a pair to get one that fits a little snugger. They look awesome. You can read my full review with photos here:

    I have a specialized expert road shoe size 45.5 how are these in comparison to the specialized shoes are they true to size? because normally i would be a 45 and spec u have to half size up...