Mosaic RS1 Demo
Move your mouse over image or click to enlarge
Mosaic RS1 Demo
Mosaic RS1 Demo 1
Mosaic RS1 Demo 2
Mosaic RS1 Demo 3
Mosaic RS1 Demo 4
Mosaic RS1 Demo 5
Mosaic RS1 Demo 6

Mosaic RS-1 Demo

$ 7,299.00 $ 11,500.00
Enter the Mosaic RS-1, the Boulder, Colorado-based framebuilder’s top-end steel offering. And while Mosaic’s highest end steel is indeed real, it’s also light. So light, in fact, that many RS-1s ... Read More
Sold out

Mosaic RS-1 Demo

Enter the Mosaic RS-1, the Boulder, Colorado-based framebuilder’s top-end steel offering. And while Mosaic’s highest end steel is indeed real, it’s also light. So light, in fact, that many RS-1s we assemble in the Above Category skunkworks with relatively “conventional” groupsets end up healthily below the UCI’s 15lb weight limit - including this one. Built from one of the lightest ferrous tubesets available, TrueTemper S3, this RS-1 shaves weight with a standard-diameter headtube, a TIG-welded front triangle, and a svelte ENVE 1.0 fork as stock equipment. All of the weight savings hasn’t sacrificed ride quality, with flex from the front-end almost undetectable on even the most technical high-speed descents and all-out sprints.

This RS-1 was built in 2014 for Above Category, and has been featured at NAHBS several times. While the overall bike is in excellent condition with brand new tires/wheels, the frame, group, and cockpit has approximately 5000km. The frame has a few signs of use, including a small paint chip on the left side of the fork.

  • Size: 55cm Custom
  • Groupset: Campagnolo Record, 52/39 chainrings/172.5mm crank length, 11-27 cassette, Chorus front derailleur, Campagnolo Record threadless headset
  • Wheels: Campagnolo Bora One tubular, 25mm Vittoria Corsa SC tires
  • Cockpit: fi'zi:k 00 seatpost, 120mm 3T Arx Team stem, 42cm 3T Rotundo Team Bar, fi'zi:k Antares R1 carbon-railed saddle
  • Condition: Fully tuned and ready to ride. Some signs of use, slight paint chip on left hand side of fork.

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