It all depends on how honestly you can answer this question: Who do you want to be?
Time to unlock your full potential
Helping athletes be their fastest version with our latest MASAMUNEBUY NOW
The armrest to unlock up to 20Watts without training
The ultimate weapon
Overcome your limits.
Achieve your goals.
Reduce your DRAG
Be more for less, increase your performance from minute 1.
Fine-tune your position so you can stay aero longer.
Improve your comfort
Become one with your bike. Most ergonomic armrest in the market.
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.
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 .
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.
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.
Inclined & soft support
Increase your comfort by adding our patented K wedges to increase the angle from 10º to 15º or 20º, giving you the best position possible to achieve your goals.
Light as a feather
Monocoque construction made of 100% UD carbon fiber for greatest weight/strength ratio.
Easy install of a bottle between your arms and a computer mount above your wrist with the Masamune accessories (Sold apart).
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
Removable with Hook and Loop
100% Monoblock UD carbon fibre with built in wire track
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
Making all bikes compatible, made of aluminum
what riders think
Very responsive, very available and product is amazing. Looking forward racing with my tetsuo cockpit
Desde el primer contacto han sido muy atentos y profesionales. Muy buenos consejos para ayudarme en la compra e instalacion.
La calidad de mis nuevos Kaizen estan fuera de toda duda y la comodidad se siente desde el primer kilometro.
Gracias de nuevo
Really high quality products, loce the brand!
Best customer service ever.
Recommend I can as Yoda would say.
Excelente!!! Es una maravilla poder escribirles por wasap o emial y que te contesten rapido. Aun es mas, compre unas cuñas de 10º y les pedi un cambio. A lo que no pusieron ninguna pega y me lo hicieron encantados. Un placer. Gracias!!
Are your armrests compatible with my bike?
One of the things we are really focus at is in compatibility as we look to help improving the comfort and position of as many athletes as possible.
That's why we show a technical drawing on ech product so you can check all the measurements before buying.
TAO and NEO TAO
- As they can directly replace your current armrests, we have design the holes pottern to be as compatible as possible. Please refer to the drawing at the product page
- Very hard to tell
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 email@example.com with your requirements with some pictures or drawing that might help
Can I return your product if it does not fits me or my bike?
Of course! You have 14 days for free returns no questions asked!
Please, refer to the 'Deliveries and returns' page at the bottom of the website
Where are your products manufactured?
We are based in Spain so we try to manufacture everything here.
At the moment all carbon fiber parts are being manufacture in Spain and all the alloy piece in Germany
Do you offer bulk sales?
Yes we do!
Please drop as an email with your exact quantity to know bulk discount.
Can I get a discount?
We have many querys regarding discount, but as we a really focus on quality there is no marging gap to do so.
However we do offer disocunt on a very selective days of the yer.
Stay tunned to know!
Can I become your dealer?
As a dealer you will benefit from discount, visibility and direct contact with us for manufacturing specific parts for you.
Become a dealer if you run a biomechanical center.
Drop us an email at www.tetsuo.com to know more