Collection: Un Authorized / Unauthorized

Un Authorized is a mountain bike brand created to offer the best experience on Japanese trails. The designer spent over 17 years riding trails around the world, including North America, Europe, and Australia, and came to believe that "Japanese trails need Japanese geometry," leading to the brand's creation.

Its flagship product, the 33rpm, is a chromoly hardtail MTB frameset. With geometry and off-road capability optimized for Japanese trail conditions, it has gained overwhelming support from domestic trail riders. The NEVER EVER GRIP MTB grip is also an exceptional product, meticulously designed from a rider's perspective.