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Shoei X-12 Daijiro Helmet
  • Shoei X-12 Daijiro Helmet - Blue/Silver/Black
  • Shoei X-12 Daijiro Helmet
  • Shoei X-12 Daijiro Helmet - Green/Silver/Blue
  • Shoei X-12 Daijiro Helmet

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4667 17999

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Video Reviews (3)

Shoei X-12 Daijiro Helmet Videos

Shoei X-12 Daijiro Kato Memorial Helmet

On the 10-year anniversary of Daijiro Kato’s passing, Shoei is re-releasing his rider replica graphic in a memorial edition. 

Born from racing, the X-Twelve Daijiro replica helmet combines integral feedback from professional racers around the globe with SHOEI’s 50 years of helmet building experience, the very latest in technology, and the most advanced materials known to man. Track certified by the fastest riders on the planet, the X-Twelve’s innovative features unite to form the most progressive racing helmet on the market.


  • Q.R.S.A. (Quick Release Self-Adjusting) Base Plate System
  • CW-1 Shield
  • AIM+ Shell Construction (Snell M2010-Approved)
  • 5 Shell Sizes
  • Aero Edge 2 Spoiler
  • Ventilation System
  • Dual-Layer EPS Liner
  • 3D Max Dry Interior System
  • E.Q.R.S. (Emergency Quick Release System)
  • Chin Curtain
  • Breath Guard

Note: Due to manufacturer restrictions, Shoei products can only be shipped to addresses within the United States

Shoei Helmets

Size Hat Size Measurement (in)
2XS 6 3/8 - 6 1/2 20 1/8 - 20 1/2
XS 6 5/8 - 6 3/4 20 7/8 - 21 1/4
SM 6 7/8 - 7 21 5/8 - 22
MD 7 1/8 - 7 1/4 22 1/2 - 22 7/8
LG 7 3/8 - 7 1/2 23 1/4 - 23 5/8
XL 7 5/8 - 7 3/4 24 - 24 3/8
2XL 7 7/8 - 8 24 3/4 - 25 1/4
3XL 8 1/8 - 8 1/4 25 5/8 - 26

RF-1100 / X-12 Shell Size Breakdown

Helmet Size Shell EPS Liner
XS (RF1100)
XS (X-12) SM

X-12 Cheekpad Sizing

Size (mm) Defaults
31 optional
33 optional
35 XS - 2XL
37 optional
39 optional
41 optional

RF1200 Cheekpad Sizing

Size (mm) Defaults
31 2XL
35 SM-XL
39 XS
43 optional

RF1100 Cheekpad Sizing

Size (mm) Defaults
31 3XL
33 optional
35 XS - 2XL
37 optional
39 2XS
41 optional

GT-Air Cheekpad Sizing

Size (mm) Defaults
31 2XL
35 SM-XL
39 XS

Qwest Cheekpad Sizing

Size (mm) Defaults
31 optional
33 optional
35 XS - 2XL
37 optional
39 2XS
41 optional

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

Click here to see the full Shoei Helmets Size Chart
Product Style RevZilla Item # Manufacturer Product # Availability
Green/Silver/Blue / XS 933963 0112-2303-03 Out of Stock
Green/Silver/Blue / SM 933964 0112-2303-04 Out of Stock
Green/Silver/Blue / MD 933965 0112-2303-05 In Stock: Ships within 24 hours
Green/Silver/Blue / LG 933966 0112-2303-06 In Stock: Ships within 24 hours
Green/Silver/Blue / XL 933967 0112-2303-07 In Stock: Ships within 24 hours
Blue/Silver/Black / XS 879132 0112-2306-03 In Stock: Ships within 24 hours
Blue/Silver/Black / SM 879134 0112-2306-04 In Stock: Ships within 24 hours
Blue/Silver/Black / MD 879136 0112-2306-05 In Stock: Ships within 24 hours
Blue/Silver/Black / LG 879137 0112-2306-06 In Stock: Ships within 24 hours
Blue/Silver/Black / XL 879138 0112-2306-07 In Stock: Ships within 24 hours


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Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.


If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

Write a Product Review for a chance to win our monthly $100 giveaways.
Shoei X-12 Daijiro Helmet 4.7 5 98 98
Loud but good racing helmet Maybe I've been spoiled by Arai. I've owned a mid-tier Shoei before and thought it was a pretty good and comfortable helmet. I bought this helmet because it was incredibly comfortable. Unfortunately it is very loud. Shoei admits that. Other than that, the helmet is great, pretty standard functionality, quality construction. You can pop-out the padding, it has good aerodynamic qualities, it's fairly light (noticeably lighter than my Arai), great visibility, and has good build quality. I'm just not excited by it because it's a Marquez theme and since the latest MogoGP championship, I can't stand the guy. November 20, 2015
9 plus 3 = 12 yr old motogp wrecker PRO: helmet fits snug in the crotch of a Dainese race suit CON: makes you tend to rub up on RM1's when you're not even a contender October 26, 2015
Excellent helmet Love the Shoei X-twelve! The helmet is stylish, light, had a great vision field and has emergency pull tabs, which is the best feature out there in my opinion. October 26, 2015
Shoie x12 Awesome helmet. Will recommend if your looking for a good helmet at a good price. August 4, 2015
Excellent helmet, Great protection. Raced with Shoei X-12 for 2 years till major crash. Sent into Shoei for evaluation and the said it was toast. The protection of the helmet is out-standing. Fit was overall a little tight (medium), but broke in over time. The ventilation was a little on the short side and the helmet is subject to fogging, beware if you race in the rain. Visibility is adequate, but not up to AGV Corsa which has a little more visibility when in the head down position. Buffeting at high speed is adequate, but tends to lift slightly. The protection of the Shoei X-12 is outstanding and their customer service is excellent. Yes it is an excellent helmet and would recommend it. July 27, 2015
Best helmet Have had this helmet for about a year and best investment I made style is awesome and looks great always getting compliments June 1, 2015
Luxury meets safety It is like being in one world while your body and motorcycle operate in another. The cheek pads break in at 1000 miles, it is a racing helmet, so it is stiff there. I like everything about this helmet. I would be typing all day to explain how awesome. I feel much safer than with my old Fox V3 (Moto) or HJC. This helmet brings out the hooligan. I normally wear an extra large and this fit perfect in XL. I bought the blue mirrored shield to go with it, no chips yet! May 23, 2015
Not worth the money Heavy, loud, fogs up, cheek pads and liner wear out very quickly. I've had much cheaper helmets that have been much better quality. Don't waste your money. April 19, 2015
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Have a functionality, fit, or otherwise product-specific question about the Shoei X-12 Daijiro Helmet? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Shoei X-12 Daijiro Helmet
Already Asked: 4 Questions, 10 Answers
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RevZilla Store asked: Why did you choose this?
O W: I really like my Shoei X12 and this one is for my son. Like the price. Oct 15, 2015
hamish c: Shoei helmets fit me well, are a good quality brand and I have had shoei helmets for the last 15yrs. Mar 5, 2015
Oleg Z: this is the best helmet, it is beautifull)) Oct 10, 2014
raul b: Looks awesome and will be great for the track. Jun 27, 2014
A shopper asked: hi, my head size is 23", what size would you recommend i the X-12?
Oct 8, 2015
Answer this · Send to friends Good question? Yes (0) No (0)
Jonathan A: Hi;
My head measures 59 cm ( 23.23 inches) and I wear a large X TWELVE DAIJIRO helmet. Since your head measurement is 23 inches the medium size might be a little tight and the large slightly loose. Looking at the size charts you will see that the medium size head dimension stops at 22 7/8 inches and the large size starts at 23 1/4 inches. I'd start with the medium size; from a safety standpoint the last thing you want is s helmet that fits too loose. If the helmet is tight in the cheeks you can order 31mm ( thinner cheek pads) to optimize the fit. Hope this helps. I love my Daijiro helmet; I only wish Shoei would make the transitions photochromic shield available for the X-TWELVE helmets.
Oct 8, 2015
Reply to Jonathan Good answer? Yes (0) No (0)
Dustin A: My head measures 22 1/2" and for Shoei, it puts me between a medium and a large. I currently wear a medium X-12 with the thinner 31mm cheek pads, but it's still a little on the snug side, so you may want to go large.
Oct 9, 2015
Reply to Dustin Good answer? Yes (0) No (0)
Pablo S: That is like boarder line med and large if I were you I'd go with a large since the x12 is a little more aggressive and a race helmet I went from an rf1100 to the x12 and I went with med and it was spot on Oct 8, 2015
Reply to Pablo Good answer? Yes (0) No (0)
A S asked: Hi, my head size is 23" what size would you recommend? also how do i decide upon the chekpads?
Oct 8, 2015
Answer this · Send to friends Good question? Yes (0) No (0)
Carl G: Well best answer i have is to get one and try it on, thats how it was done for me. I know it might not be available in most cases. I wear a med and my hates are 7 1/4 to 7 1/2. Sorry i couldn't be more helpful. Oct 8, 2015
Reply to Carl Good answer? Yes (0) No (0)