Designed for timeless durability in all conditions, the RT-1 is a perennial favorite at Above Category, a showcase of bespoke precision and exceptional domestic manufacturing. Read more
Considered by many to be one of the finest American titanium framebuilders, Mosaic Cycle's flagship road racer and crown jewel is modestly known as the RT-1. A raw assemblage of titanium, it's where head welder Aaron Barcheck and company have pulled out all the stops from their hermitage in Boulder, Colorado.
The Mosaic RT-1 begins life as a 3/2.5 titanium tubeset, after which the front triangle is custom-butted by Mosaic for the rider - a step many other Ti builders don't bother with. Why? Weight. And ride. Mated to an oversized 44mm headtube that an ENVE Road fork slides into, the RT-1's front-end can be built as stiff as even the most stout of carbon bikes. Just as well, the rear triangle of the RT-1 is rock-solid, with massive chainstays giving it an instant, drive-by-wire acceleration feel. Internal brake routing is standard on the RT-1. It's also available as a disc brake-equipped bicycle with flatmount disc tabs at no extra charge. All of Mosaic's raw Ti finish options are available, with standard paint schemes also an option. Full-custom paint and design consultation for the RT-1 is also available.
Every Mosaic RT-1 that leaves Above Category is custom-built for the individual, with geometry and tubeset choice based on your answers to our questions about your riding style, current bike setup, riding/racing aspirations, and biomechanical dimensions.
Whether you’re already set on a certain make and model of frame, or still have some questions about how to go about your build, drop us a line and we can talk through your options. From the first detail to the final finish, we'll help you dial in the perfect set up for your next dream bike.