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All customers outside of Japan are subject to be levied import tax or customs fees. Especially, EU, Israel, and Brazil customers!
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All yo-yos have passed the manufacturer's quality inspection. Quality standards vary by manufacturer. Basically, products that can be used normally are within product specifications.
Examples of possible initial defects
For more information about competitive yo-yos, please see here.
Also, if you have any problems with yo-yos, please check our Q&A.
Magnesium × Stainless Steel × POM. The ultimate tri-material model woven from three materials.
Mir Kim, who achieved three consecutive 1A World Championship victories, and Miri Kim, who won the Women's Division for three straight years. As a dual signature model for these world champion siblings, this is YoYoFactory's ambitious work, marking their first serious adoption of magnesium in over 25 years of their history making yo-yos.
The greatest appeal of the magnesium body lies in its overwhelming lightness. While maintaining sufficient strength with approximately two-thirds the specific gravity of aluminum, this characteristic enables extreme reduction of the body weight itself, allowing that weight to be concentrated in the rims. The stainless steel weight ring precisely positioned inside the rim features a unique structure embedded in the rim's center, neither a typical inner rim nor outer rim. This placement maximizes spin power and stability while maintaining nimble handling.
In addition to this, POM plastic is deployed on the edge portions. This dramatically reduces friction at string contact points, extending string life while achieving smooth handling.
Born from innovative design that skillfully combines three materials, this is the crystallization of YoYoFactory's technology. Truly a new "Masterpiece."
*Slight darkening or black spots may appear due to the characteristics of the magnesium body, but this is a product specification.
| ブランド | YoYoFactory |
| シグネチャー | Mir / Miri Kim |
| スタイル | ストリングトリック(1A, 3A, 5A) |
| ブランド国 | アメリカ |
| 発売年 | 2025 |
| 重さ (g) | 66.8 |
| 直径 (mm) | 56.64 |
| 本体幅 (mm) | 50.67 |
| トラピーズ有効幅 (mm) | 47 |
| ボディ形状 | ステップストレート |
| ボディ素材 | マグネシウム |
| リム種類・素材 | ステンレス |
| ベアリング・軸の種類 | センタートラックベアリング |
| ベアリングサイズ | |
| レスポンスシステム（サイズ） | |
| アクセル(軸) | M4 x 10mm |
| 分解 | 可能 |
| スペーサー | なし |
| バインド | バインド必須 |
| 表面加工 | サラサラ加工 |
| メンテナンス |
| ストリング | バインドストリング 【プロ】 x100 |
| ベアリング | C3カーブベアリング (サイズC) |
| パッド | REWIND Japanパッド |
| メンテナンス | SUS ベアリングアディティブ |
| Brand | YoYoFactory |
| Signature | Mir / Miri Kim |
| Style | ストリングトリック(1A, 3A, 5A) |
| Designed in | アメリカ |
| Release Year | 2025 |
| Weight (g) | 66.8 |
| Diameter (mm) | 56.64 |
| Width (mm) | 50.67 |
| Trapeze Width (mm) | 47 |
| Body Shape | ステップストレート |
| Body Material | マグネシウム |
| Rim | ステンレス |
| Bearing Type | センタートラックベアリング |
| Bearing Size | |
| Response System | |
| Axle | M4 x 10mm |
| Twist-apart | 可能 |
| Spacer | なし |
| Bind | バインド必須 |
| Surface | サラサラ加工 |
| Maintenance |
| String | Bind String [Pro] x100 |
| Bearing | C3 Curved Bearing (Size C) |
| Pad | REWIND Japan Pad |
| Maintenance | SUS Bearing Additive |
