The New Mosaic RS-1: modern performance + classic steel
Blending cycling’s oldest frame material with 21st-century tubing technology, Mosaic, the Boulder CO-based frame builder, has just released its RS-1 series of road frames.
“Having a solid steel road bike in our line-up completes the models we offer,” said Aaron Barcheck, Mosaic Cycles founder and lead frame-builder. “We’ve brought our own Mosaic perspective to the steel road bike; all the things you’d want with the timeless ride qualities of a premium steel frame-set.”
Available in both classic rim-brake and modern disc-brake configurations, both have the same Columbus Spirit HSS tubing, tapered head tube and reliable threaded bottom bracket. The build also features details like “star” cable port/bottle boss reinforcements, braze-on front derailleur mount and integrated derailleur hanger.
RS-1 and RS-1d bikes will be delivered six weeks from the order date. The combination of performance and beauty is what Mosaic calls “The New American Handmade.” Hoping to get my hands on a frame in the next couple months to form some of my own opinions.
RS-1 Highlights:
Rider-specific custom geometry and tube set
Columbus Spirit HSS performance steel tubing
Chris King Dropset Headset
threaded 68mm bottom bracket
27.2mm seatpost
tapered head tube
Braze-on front derailleur mount
Mechanical/ Di2/EPS/ Etap shifting available
Choice of Mosaic paint layouts and 45 stock colors
Six-week lead time
Frame set $5600 USD
