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TIME TO UNLOCK YOUR FULL POTENTIAL
Improve drastically your performance and reduce injuries with our latest MASAMUNE
Configure your couplingsFull compatibility
The armrest to unlock from 15 to 30Watts without training
The ultimate weapon
Overcome your limits.
Achieve your goals.
Reduce your DRAG
Be more for less, increase your performance from minute 1.
Perfect fit
Fine-tune your position so you can stay aero longer.
Improve your comfort
Become one with your bike. Most ergonomic armrest in the market.
Full focus
Accessories perfectly integrated so you can focus on pedaling.
Gorō Nyūdō Masamune
五郎入道正宗 1264 - 1343
Japan's legendary katana forger etched his name in history for the greatness of his swords.
Each of his creations is a testament to his unparalleled craftsmanship, combining an extraordinary edge with an artistic grace that elevates his swords to the status of timeless masterpieces.
Masamune's legacy lives on as a shining example of swordsmanship excellence.
Relentless Masamune
1. Handgrip
Adjustable wrist angle monogrip
2. Computer mount
Mount your Garmin/Wahoo computer above your wrist
3. Bottle adapter
Mount for an easy acces of a bottle
4. Foam
Removable with Hook and Loop
5. Body
100% Monoblock UD carbon fibre with built in wire track
6. Adjustable
Center-to-center opening of 140mm. Mounting from 100mm to 160mm without a plate.
7. K Wedges
Choose from 10 to 15 to 20 degrees, made of aluminum
8. Plate
Making all bikes compatible, made of aluminum
Be faster with less effort
Feel your improvement
Masamune has been specifically designed for Ironman triathletes where drag coefficient, ergonomics and stability have brought up to the max .
Refined aerodynamics
As tested in wind tunnel in Japan, the only fact of changing your front cockpit to a Masamune will immediately save you 15 to 20 Watts.
Perfect fitting
Only ones in the market offering a wrist angle regulation so you can fine-tune your position and avoid pain. The Most ergonomically advanced monoblock hand grip.
Full integration
Easy install of a bottle between your arms and a computer mount above your wrist with the Masamune accessories (Sold apart).
What Triathletes say
From the first contact they have been very attentive and professional. The quality of my new Kaizen is beyond doubt and the comfort is felt from the first kilometer.
Marcos (I think he is the founder) is the one who takes care of you and is 100% involved with the project and ensuring that the customer has an excellent experience, this is the third product I have bought, he has gone through TAO, KAYZEN and now MASAMUNE
Really high quality products, love the brand!
Best customer service ever.
Recommend I can as Yoda would say.
Excellent!!! It is wonderful to be able to write to them by WhatsApp or email and they answer you quickly. Even more, I bought some wedges of 10º and asked them for a change. They didn't have any problem and they did it with pleasure. A pleasure. Thank you!
I am very happy with the purchase, the treatment received and the quality of the product.
100% recommended!
Very good advice to help me in the purchase and installation.the quality of my new Kaizen is beyond any doubt and the comfort is felt from the first kilometer.thanks again.
They look very good, so far I've only put them on and ridden 1 day, but the change in terms of support and comfort compared to the ones I had before is brutal.
Everything very fast.
The product meets 100% of my expectations.
The communication with Marcos has been at all times, easy and fast.
Ligeros y muy cómodos! La nueva actualización permite multitud de ajustes de posición, muy contento!
Prompt attention, good shipping, good quality.
Very happy with the product you have.
Top product and above all a direct customer service and 10!!!!
It is the second time I buy something with them and great. A pleasure as always
Everything was excellent, the attention, the recommendations and the product is superb.
Thank you very much
Perfect, both in service and customer service and product quality.
Everything perfect, I would buy again without a doubt, they solve all your doubts and help you with everything.
Thank you
FAQS
Where are your products manufactured?
At the moment all carbon fibre parts are being manufactured in Spain and all the alloy pieces in Germany
Can you manufacture a custom plate to adapt your armrests to my bike?
Yes! If you need a dedicated plate or custom alloy piece that you want to manufacture we can make it happen!
Just drop as an email at info@tetsuo.com with your requirements with some pictures or drawing that might help
What payment methods do you accept?
We accept all major payment methods, including Visa, MasterCard, PayPal, Apple Pay, and Google Pay.
How can I find the right product for me?
Each product page provides detailed descriptions, installation guides, and technical specifications. Additionally, you can contact our 24/7 customer support for personalized advice.
How can I place an order?
Orders can be placed directly through our online store at Tetsuo.com. Simply select the products you want and follow the checkout process. We accept multiple payment methods, including Visa, PayPal, Apple Pay, and more.
What are the shipping options and estimated delivery time?
We offer worldwide shipping with both standard and express options. The estimated delivery time is usually 3-7 business days, depending on your location. During checkout, you'll receive an estimated delivery date.
What is the return policy?
You have 14 days to return any product at no additional cost if you are not satisfied. Just ensure the item is in its original condition. You can find more details about returns here.
Do you offer a warranty on your products?
Yes, we offer a 2-year warranty on all our products. If you encounter any issues during this period, please contact us for assistance or replacement. You can read the full warranty policy here.
