O-Yoroi Taisho

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SKU: T100

Original price was: $9,337.99.Current price is: $6,839.30. $6,839.30

  • Each option has a ? next to it. Click or Tap the ? to show a summarized explanation of the option.
    For full explanations please click the "ORDER OPTIONS EXPLAINED" link at the bottom left of the page.

    Select the Color & Finish of your Do (cuirass).
    Samurai Chest Do Color & Finish Option by Iron Mountain Armory



    Select to change the Kusazuri (Skirt) Color / Finish.

    Kusazuri (Skirt) Color / Finish Options


    (If left blank it will match the MAIN ARMOR COLOR option selected above.)


    Select the LACE (Odoshi) Color you would like for your armor. 
    Odoshi Lace for Samurai Armor by Iron Mountain Armory
    (Click through the product images to see different Lace Colors.)

    Select to Change or Add a BOTTOM lace to your Do.
    Bottom Lace (Odoshi) Color Option by Iron Mountain Armory

    Image for reference only




    Select to Change or Add a Mimi-Ito (Border Lace) to your Do / Kusazuri (Armored Skirt).
    Mimi-Ito Color for Chest / Kusazuri Option by Iron Mountain Armory

    (Image for reference only)




    Select which leather or egawa you would like used on your o-yoroi.
    O-Yoroi Chest Leather (Egawa) Options by Iron Mountain Armory


    Select the TRIM (Kawa or Asa) you want used around the Leather areas of your armor.
    Kawa Fukurin by Iron Mountain Armory





    This option applies a specialized heat treatment and tempering process to your armor plating, enhancing its hardness, minimizing deformation, and providing superior corrosion resistance for increased longevity.







    Select to receive a Digital Picture Mockup (Simulation) of your order. We will email you a Mockup for your review before we start crafting your item. You can Approve or request Changes before we start crafting your item.



    Additional Options

    Select to add 1 or 2 Chest Rings (Saihai no kan & Tenugui no kan) to your Dō, used to display tassels or hold a saihai or gunbai.
    Do Chest Rings Saihai no kan & Tenugui no kan Custom Samurai Armor Options by Iron Mountain Armory

    (Select option from the perspective of wearing the armor)

    Add 1 or 2 WAIST RINGS (holding rings) to either side of your Dō (chest plate), used to hold bags, tie a weapon, Gunbai and/or your Sarashi in place.  We recommend adding both if you are training in your armor. 
    Wist Holding Rings Options for Custom Samurai Dō by Iron Mountain Armory
    (Select option from the perspective of wearing the armor)


    Ornamental Options


    Select to ADD Ornate Brass Fittings to the Front Only and/or Back of your Gashira or Kachi Do (if available)

    Aida & Kiusho Brass Kanamono by Iron Mountain Armory
    Image for reference only & may vary depending on armor class / model.

    This option is for adding a "Fukurin" or decorative metal trim over the edges of your dō.
    Fukurin (Decorative Trim) Options for Dō by Iron Mountain Armory

    Add a Clan or your own Custom mon to the Kyubi and/or Sendan-no-ita.


    Sendan No-Ita & Kyubi-No-Ita Mon Options by Iron Mountain Armory

    Add a Clan or your own Custom mon to the Kyubi and/or Sendan-no-ita.


    Sendan No-Ita & Kyubi-No-Ita Mon Options by Iron Mountain Armory


    Display Options

    Add a Display Stand and Box to your order

    Yoroi Bitsu and Stand

    Select between standard sized armor sets or fully custom sized

    Select the armor size you prefer.

    Standard Size: fits most people 167–182 cm tall (≈ 5'6"–5'10").
    The torso is cut with an 11 cm (~4 in) taper from chest to waist.

    To choose correctly, measure your chest at full inhalation and use that measurement as your reference.
    If your in between sizes it is often best to order 1 size larger.

    To choose correctly, measure your chest at full inhalation and use that measurement as your reference.
    If your in between sizes it is often best to order 1 size larger.

    Measure your waist at the navel (belly-button level) and choose that size.
    Unsure? Pick the next size up for a looser fit.

    Important: The waist is traditionally 4 in / 11 cm smaller than the chest.
    We cannot make the waist larger than your chest measurement.

    Please select your height. Our standard armor is designed to best fit individuals between 167 cm and 177 cm tall (approximately 5'6" to 5'10"). This helps us ensure the best possible fit for your armor.

    Please select your weight. This information is used for reference only to help us better understand your body type and guide the overall shape and fit of the armor. It does not affect the quality or class of the armor, and all sizing details can still be adjusted if needed.


    These accessories will be added with your armor set shipment.

    Add a long cloth belt used to hold your dō firmly in place for a more comfortable with and to hold weapons and other accessories to your waist.
    Sarashi

    Add a narrow Uwa - Obit (outer utility) Belt to your armor set, to hold your tanto (dagger), katana (sword), bags, canteen and other accessories.

    Add a Large Yoroi Obi Belt to your order—a padded “pillow” belt worn beneath the armor. It cushions and protects the hips while keeping the chest armor securely positioned. 
    This material will match the main material you select for your armor.

    Add Straw Sandals to your order

    Add Traditional Straw Sandals to your order. Select 1 size smaller.

    Waraji Traditional Samurai Sandal

    Add a pair of Tabi Socks to your order


    Extra Customization Options


    Gashira (Officer):
    Expertly handmade from a mixture of quality traditional and modern materials, as well as some modern crafting process. This class of armor is crafted with a good attention to detail.


    Crafting Time: 20 to 35 Days.


    Materials Used: Bowl style kabuto, steel construction, traditional brocade, hemp, quality cotton, brass, copper fittings with genuine leather & and some synthetic materials might be used. (materials may differ depending on model)



    Our “Gashira Class” yoroi represents the next level up from our “Kachi Class.” Each suit is meticulously handcrafted by our experienced katchû-shi (armor smiths) at Iron Mountain Armory. These artisans pour their warrior spirit into every piece, using quality materials and traditional crafting methods, complemented by modern techniques, tools, and design advancements. Like the Taisho Class, each suit is heavily researched and crafted with great care for historical accuracy. The principal difference between the Gashira and Taisho classes is that the Gashira Class is crafted with a practical bowl-style kabuto (simulated laminate) and some machine-stamped parts. The Gashira Class also features subtle modern enhancements, such as grommets and spot welding, making the armor more robust and easier to maintain. Our Gashira Class samurai armor is made for collectors, exhibitions, re-enactors, and martial artists who desire an authentic “Gendai” samurai suit of armor without the additional expenses associated with the more traditional design and handcrafting methods of our Taisho Class.




    The Gashira Class features a more traditional Gendai design compared to the Kachi Class and includes features such as real animal hair, genuine leather, a removable or interchangeable nose, brass fittings, shoulder padding with kikko (armor plating), traditional butted mail, opposable thumbs, leg/waist support on haidate, extra materials, fittings, riveting, grommets, additional lacing options, and an included armor storage/display box (yoroi bitsu) with stand. The attention to detail is a significant step up from the Kachi Class. However, due to the handcrafted nature of many parts, there may be some blemishes that pass through our QC process. Although we strive to avoid and correct these blemishes, they are a natural occurrence in handcrafting. Taisho Class suits will have fewer, if any, of these blemishes due to the high standards and meticulous review processes.


    Advanced Options for our Gashira Armors. These are optional, and come with additional costs. These Options will override the MAIN PAINT option for ONLY the parts selected here.

    This option offers to make your kuzazuri (skirt plate) detachable / interchangeable.  Commonly used in the past for fast repair / replacement of the kuzazuri, or removable for fast and quiet movement of troops. Kusazuri Options

    Select the Color & Finish your Kusazuri (Gessan) Bottom Plates.
    Kusazuri (Gessan) Bottom Plate Option by Iron Mountain Armory

    Select the COLOR of the VERTICAL / SIDE LACE of your Sode.

    Sode Vertical / Side Lace Options Custom Samurai Armor

Command the Battlefield – Embrace the Ancient Legacy

The O-Yoroi (Great Armor) is among the most iconic and revered samurai armor designs of feudal Japan. Worn between the 11th and early 14th centuries, it rose to prominence during the Genpei War. Featuring a distinctive boxed (cuirass), the armor enclosed the torso in a “U” shape and fastened with a waidate (side plate) under the right arm, providing formidable protection for mounted samurai archers.

This prestigious suit was reserved for wealthy daimyō (feudal lords) and high-ranking generals, as its intricate construction required nearly a year to complete and cost the equivalent of a samurai commander’s yearly salary—around $55,000 USD in modern value. Every detail, from materials to colors, symbolized clan affiliation and social status.

Constructed using hon kozane (individual iron or leather scale plates), each plate was coated in clay, lacquered with urushi, and then hand-laced with odoshi (braid) in silk, cotton, or hemp. The result: an exceptionally strong yet flexible suit that served its wearer with elegance and durability.

The O-Yoroi was purpose-built for mounted archers. The box-like structure supported its weight on the saddle, while the curved chest allowed for easy yumi (bow) drawing. A strip of leather called tsuru bashiri gawa prevented the bowstring from catching on the ridges of the armor. Additional features like the sendan-no-ita and kyubi-no-ita (armpit protectors) enabled a full draw of the bow while maintaining defense.

Despite its excellence, the O-Yoroi’s rigidity made it less suited for infantry combat. Following the Mongol invasions of 1274, more versatile armor designs emerged. By the 14th century, the O-Yoroi saw reduced battlefield use but returned to popularity in the Edo period as a ceremonial symbol of the samurai spirit, often donated to shrines or used in rituals honoring ancestors.

This reproduction is handcrafted by Iron Mountain Armory’s senior Taisho-class katchû-shi, focusing on authenticity and heirloom-grade quality. They maintain the time-honored traditions of their forebears, refusing to compromise on craftsmanship. Each detail of your O-Yoroi can be tailored to your preference—ensuring your armor is as legendary as the samurai who once wore it.

Key Features & Benefits:

  • Historically accurate Taisho-class reproduction
  • Full-sized, fully functional and wearable
  • Traditional hon kozane design with flexible box-shaped
  • Custom paint, odoshi, and armor detailing available
  • Includes display box and stand

Shipping Information:

Your O-Yoroi will be handcrafted by our senior Taisho katchû-shi. Please allow at least 2 to 3 weeks for this exclusive piece to be carefully forged and prepared. This is a once-in-a-lifetime investment into samurai tradition and elite craftsmanship.

Stand Above the Rest – Armor Worthy of the Samurai Elite

For more information, please review our Order Options Explained, Glossary Terms or FAQ Pages. You can also Contact Us directly. We are always happy to be of service.

Description

Command the Battlefield – Embrace the Ancient Legacy

The O-Yoroi (Great Armor) is among the most iconic and revered samurai armor designs of feudal Japan. Worn between the 11th and early 14th centuries, it rose to prominence during the Genpei War. Featuring a distinctive boxed (cuirass), the armor enclosed the torso in a “U” shape and fastened with a waidate (side plate) under the right arm, providing formidable protection for mounted samurai archers.

This prestigious suit was reserved for wealthy daimyō (feudal lords) and high-ranking generals, as its intricate construction required nearly a year to complete and cost the equivalent of a samurai commander’s yearly salary—around $55,000 USD in modern value. Every detail, from materials to colors, symbolized clan affiliation and social status.

Constructed using hon kozane (individual iron or leather scale plates), each plate was coated in clay, lacquered with urushi, and then hand-laced with odoshi (braid) in silk, cotton, or hemp. The result: an exceptionally strong yet flexible suit that served its wearer with elegance and durability.

The O-Yoroi was purpose-built for mounted archers. The box-like structure supported its weight on the saddle, while the curved chest allowed for easy yumi (bow) drawing. A strip of leather called tsuru bashiri gawa prevented the bowstring from catching on the ridges of the armor. Additional features like the sendan-no-ita and kyubi-no-ita (armpit protectors) enabled a full draw of the bow while maintaining defense.

Despite its excellence, the O-Yoroi’s rigidity made it less suited for infantry combat. Following the Mongol invasions of 1274, more versatile armor designs emerged. By the 14th century, the O-Yoroi saw reduced battlefield use but returned to popularity in the Edo period as a ceremonial symbol of the samurai spirit, often donated to shrines or used in rituals honoring ancestors.

This reproduction is handcrafted by Iron Mountain Armory’s senior Taisho-class katchû-shi, focusing on authenticity and heirloom-grade quality. They maintain the time-honored traditions of their forebears, refusing to compromise on craftsmanship. Each detail of your O-Yoroi can be tailored to your preference—ensuring your armor is as legendary as the samurai who once wore it.

Key Features & Benefits:

  • Historically accurate Taisho-class reproduction
  • Full-sized, fully functional and wearable
  • Traditional hon kozane design with flexible box-shaped
  • Custom paint, odoshi, and armor detailing available
  • Includes display box and stand

Shipping Information:

Your O-Yoroi will be handcrafted by our senior Taisho katchû-shi. Please allow at least 2 to 3 weeks for this exclusive piece to be carefully forged and prepared. This is a once-in-a-lifetime investment into samurai tradition and elite craftsmanship.

Stand Above the Rest – Armor Worthy of the Samurai Elite

For more information, please review our Order Options Explained, Glossary Terms or FAQ Pages. You can also Contact Us directly. We are always happy to be of service.

Additional information

Weight 28 kg
Dimensions 54 × 54 × 68 cm

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