The New Mosaic RS-1: Modern Performance With Classic Steel Soul

Mosaic Cycle’s new RS-1 blends cycling’s oldest frame material with 21st-century tubing technology to create a thoroughly modern road bike with the classic look and signature ride feel of high-performance steel tubing. 

Even in this modern age of F1-inspired carbon and aerospace titanium tech, many riders still whisper of the ride of steel in reverent tones. This devotion to the uniquely lively ride of a handmade steel frame is the reason Mosaic developed the new RS-1 series

Mosaic Cycles RS-1

“Having a really solid steel road bike in our line-up really 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 out of a modern bike with the timeless ride qualities of a premium steel frameset.”

Available in both classic rim-brake and modern disc-brake configurations, both variants share the same Columbus Spirit HSS tubing with an elegant tapered head tube and reliable threaded bottom bracket. Classic road bike aficionados will appreciate the details like “star” cable port/bottle boss reinforcements, braze-on front derailleur mount and integrated derailleur hanger. 

Mosaic Cycles RS-1 custom steel road bike

While these details may appeal to those initiated into the cult of fine steel bikes, anyone will appreciate the appeal of Mosaic’s eye-catching paint layouts. Most importantly, everyone who rides an RS-1 will love the responsive and composed ride afforded by the combination of custom geometry and custom tube set. 

Mosaic Cycles RS-1 custom steel road bike

RS-1 and RS-1d bikes will be delivered six weeks from the order date, a lead time unmatched in the hand-built bike world. Remarkably, Mosaic’s dedication to efficiency and tight process control allow them to deliver any bike from their catalog in six weeks. This combination of performance and beauty; delivered in record time, is what Mosaic calls “The New American Handmade.”

Mosaic Cycles custom steel road bike

RS-1 Highlights:

  • Rider-specific custom geometry and tube set
  • Columbus Spirit HSS performance steel tubing
  • Chris King Dropset Headset
  • threaded 68mm bottom bracket
  • 27.2m 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
  • Price $6000 USD Frameset / $12,000 USD Full Build (as pictured)

Caliper Frame Specifications:

  • QR front and rear
  • Caliper brake mount 
  • 28mm tire clearance
  • Enve Road tapered 1.5″ Carbon fork

Disc Frame Specifications:

  • 142x12mm rear axle, 100x12mm rear axle
  • Flat mount brake front and rear 
  • 30mm tire clearance
  • Columbus Futura Disc tapered 1.5″ Carbon fork

Find a Mosaic Cycles dealer in your region.

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