Mosaic RS-1

traditional material meets modern spec

The Mosaic RS-1 is a performance bred piece of equipment that knows no limits, it is the pinnacle of what Mosaic has to offer in a steel bike.  A particular blend of oversized butted tubes creates responsive handling without losing the quality ride steel frames are known for.  As our flagship steel road model, the RS-1 is available in a variety of configurations of road components and spec: caliper, disc, etap, di2 and more.  Complemented by full custom geometry and paint by Spectrum Paint & Powderworks, each bike will truly be as unique as the rider. 

Included Features

Geometry:                                                                                           Custom 

Extra Features at no charge

Stock size

Features at additional charge

Tubeset:                                                                        Columbus Spirit HSS


Fork:                                                                                         Enve Road 1.5"

Headset:                                                                            Chris King Dropset

Choice of Color

Brake mount:                                                                                       Caliper

Brake routing:                                                                      external housing

Axle:                                                                                            Standard QR

Shifting:                                                          Mechanical (external routing)

Di2, EPS, E Tap (Internal routing)

Bottom Bracket:                                                    Threaded English 68mm

PF30 68mm

Seatpost:                                                                                            27.2mm

Front Derailleur Mount:                                                                 Clamp on

Braze on

H20 Mounts:                                                   Two, downtube and seattube


Max Tire Size                                                                                            28c


Finish:                                                       Paint: Choice of Layout and color


Flatmount Disc

Columbus Futura Disc

Internal Housing

142x12mm Thru (disc)

Copyright © 2020 Mosaic Cycles - All Rights Reserved

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Mosaic Bespoke Bicycles

Proudly Handcrafted in Boulder, CO

4770 Pearl Street Suite F, Boulder, CO,80301