*NEW* 'KOTETSU' - Scientifically Toughened 'TECHNO SHINAI®' Set of 3
*NEW* 'KOTETSU' - Scientifically Toughened 'TECHNO SHINAI®' Set of 3
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KOTETSU – Scientifically Toughened TECHNO SHINAI® (Set of 3)
The KOTETSU is part of the TECHNO SHINAI® series – representing a new generation of Shinai technology that blends traditional form with advanced material science. Through a unique strengthening process, this bamboo Shinai is engineered to be more durable, longer-lasting, and better suited for consistent performance under intense keiko and shiai conditions.
What Makes KOTETSU Different?
Rather than simply making the bamboo harder or more rigid, the TECHNO SHINAI® process focuses on improving the way the bamboo absorbs and disperses impact. The result is a Shinai with improved flexibility, better resilience against cracking or splintering, and significantly enhanced longevity—especially in dry or cold conditions.
- Scientifically Verified Strength – Data-tested for durability using impact and flexibility simulations.
- Increased Resistance to Splintering – Particularly in cold or dry environments where standard bamboo is more prone to damage.
- Improved Longevity – Retains strength and shape even after long periods of storage.
- Reduced Surface Fraying – Less maintenance required during regular use.
Technical Performance Data

Grip Specifications
- Grip Length: Approx. 32cm
- Grip Diameter: Approx. 27mm (excluding leather fittings)
Style Options (Images)
This Shinai is available in two classic forms to suit your preference. Both feature the same enhanced bamboo construction:
- Dobari Style – Features a wider body near the tsuka, making the tip feel lighter. Excellent for fast, consecutive strikes. Slightly less durable due to its shape.
- Koto Style – Evenly balanced from top to bottom for solid, one-shot strikes. Slightly more durable than Dobari.
Important Disclaimer
While the KOTETSU Shinai has undergone a specialized strengthening process and scientific durability testing, no Shinai is 100% guaranteed against breakage. Proper care, storage, and regular inspection are still essential. Our standard warranty applies.
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