Hardtail mountain bike optimized for Japan. UnAuthorized "NEW" 33rpm
Around 20 years ago, we wanted to simply pursue the joy of mountain biking with a hardtail.
UnAuthorized 33rpm was born with the aim of creating the ultimate trail bike.
After 20 years, the developers who rode trails in various countries have come to realize something.
That is, there are people in every country who enjoy mountain biking, and the design of the mountain bikes they ride might reflect their backgrounds and the terrain they ride on. So, for Japanese people to enjoy mountain biking in Japan, isn't localization to "Japan" essential?
Many mountains in Japan are steep and compact, with narrow trails and tight turns. Furthermore, the environment is unique, with high humidity, tree roots, and slippery rocks, unlike anything found in America or Europe.
Additionally, it's meaningless if you can't fully enjoy the descents.
The current UnAuthorized 33rpm was born from these thoughts.

Based on the concept of high stability, maneuverability, and geometry that Japanese riders can master,
・Head angle 63 degrees
・Rear center under 420mm
・29-inch wheels
A unique hardtail bike unlike any other was born.
And now, the "NEW" 33rpm is here, with some updates while maintaining the basic concept.

Color: Forest
The main differences from the previous model are:
・400g lighter.
・Revised pipe usage for a more supple ride feel.
Appropriate flex when kicking the bike on the trail, also contributing to weight reduction.
・Revised seat tube angle to optimize weight distribution when seated, preventing the front wheel from lifting on steep climbs.
・Chrome plating applied as a primer to inhibit rust.






In addition, there are changes to the dropouts and included accessories.

These updates make it even easier to handle on the trails.

Color: Stone Blue
We believe we've taken another step closer to the ultimate trail bike that the 33rpm aims to be.
Colors: Stone Blue, Forest
Sizes: 615/630/660/675
Price: 169,400 yen (tax included)
👉 unauthorized 33rpm 2023 frameset
We look forward to discussing custom builds and modifications with you.
You can also use Grumpy Loan, which now includes theft and damage insurance.
Hello guys, I’m interested (in love :) ) to buy a 33rpm Unauthorized 2023/24 model in “stone” blue color. I very like Japan culture and traditions. My height is 174 cm, my weight is 85 kg. But I’m from Bulgaria, Europe. So do you have a European supplier or can you send it from Japan? It will be cheaper to send it from a European country because I have to pay high customs dues and taxes. Please inform me about this issue. Kind regards, Nick from Bulgaria.