Mosaic RT1 57 Demo
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Mosaic RT1 57 Demo
Mosaic RT1 57 Demo 1
Mosaic RT1 57 Demo 2
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Mosaic RT-1 57cm Demo

$ 7,499.00 $ 11,200.00
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 wh... Read More
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Mosaic RT-1 57cm Demo

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. Designed for timeless durability in all conditions, the RT-1 is a perennial favorite at Above Category, and this demo RT-1 has been ridden four times during the 2016 season.

The 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 (one of the only others is Baum). Why? Weight. And ride. Mated to an oversized 44mm headtube that an ENVE 2.0 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.

  • Size: 57cm Stock
  • Groupset: Campagnolo Record, 52/36 chainrings/172.5mm crank length, 11-27 cassette
  • Wheels: Campagnolo Bora One 50, 25mm Vittoria Corsa SC tires
  • Cockpit: fi'zi:k R1 seatpost, 100mm R5 stem, 44cm R1 bar, Antares R1 saddle
  • Condition: Fully tuned and ready to ride. Frame could pass for brand new, tires have 50% life remaining.

SIZING

Seat Tube C-T Top Tube Effective Seat Angle Head Angle Head Tube Fork Rake Chain Stay Length
51 52 74º 71.5º 11 5.0 40.8
54 54 73.5º 73º 14 4.3 41.0
55 55 73º 73º 15 4.3 41.2
57 57 73º 73º 17 4.3 41.2