Mosaic Bikes · Road
Mosaic RT-Zero Titanium Road Bike
A refined roadster that rolls with Mosaic's renowned ride feel and all-new CNC innovation courtesy of the brand's Zero Ops division
The RT-Zero feels as much a statement of intent as it is a frameset. But what a frameset.
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Unveiled at the 2025 MADE show in Portland, Oregon, the Mosaic RT-Zero is the first release from the brand’s new Zero Ops division, dedicated to advanced titanium design, fabrication, and integration. As much a statement of intent as it is a frameset, the RT-Zero leans into Mosaic’s new subtractive CNC machining method and a reimagined finish and ride feel that sets the tone for the next stage of Mosaic’s journey.
Keep reading to learn more, or head to our journal, Regroup Review for deeper specifications, more images and insight.
Specifications
- Frame
- Custom 3A/2.5V Double Butted Titanium Tubeset
- GEO
- Custom
- Tire clearance
- 700x35mm (optimized for 32)
- Fork
- ENVE In-Route Road Fork
- Botoom Bracket
- T47 x 68mm
- Seat
- Zero Ops Proprietary Carbon Seatmast +Compression Molded Carbon Topper with Enve hardware
- Brales
- Flat Mount, 12x100 Front // 12x142 Rear
- Gearing
- Internal Di2 or Wireless AXS shift routing
- Paint
- RT-Zero specific finishwork
- Cockpit
- ENVE In-Route One Piece AR handlebar
- Routing
- Fully Integrated
From the ReviewMosaic Announces the RT-Zero Titanium Road Bike, Its First Zero Ops Drop
More about the RT-Zero
The RT-Zero introduces a series of precision CNC-machined titanium components — including a one-piece UDH dropout, bottom bracket plug, seatmast and seatstay collar — designed and made in-house. These parts support the integration of a D-shaped carbon seatmast section and custom topper, bringing a plush new level of refinement, stiffness and finish quality to Mosaic’s road line. The frame also incorporates a tapered headtube and a T47 bottom bracket with full internal routing for clean, modern cable management.
We have a specific approach, and that's what makes our product special. It's why you see CNC head tubes, CNC dropouts, and a CNC seatstay collar—no printed titanium.
Underneath it all, the RT-Zero is less about chasing a trend and more about laying groundwork.
Mark Curriefrom Mosaic Announces the RT-Zero Titanium Road Bike, Its First Zero Ops Drop
From the ReviewThe Sweet Spot: Adam’s Shattered Camo Mosaic RT-Zero
The Finer Details
Precision Cnc Titanium
The RT-Zero features Mosaic’s new subtractive CNC-machined components, including the one-piece UDH dropout, seatmast collar, and tapered headtube. Machined in-house, these parts deliver crisp fit, durability, and a distinctly Mosaic aesthetic.
Carbon Seatmast Integration
A D-shaped carbon seatmast and custom topper are seamlessly joined to the titanium mainframe. This design balances stiffness with rider-specific tuneability, creating a lightweight solution that elevates both performance and finish quality.
Clean, Modern Routing
With a 68mm T47 bottom bracket and fully internal cable routing, the RT-Zero offers contemporary integration without sacrificing serviceability. The result is a road bike that looks as refined as it rides.
Stories from the Review
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About the brand
Mosaic Bikes
Boulder-based Mosaic has been hand-building titanium works of art since 2009. With a range that deftly turns from the road to the trail and even towards the steep drops of the singletrack, a Mosaic stands for impeccable craftsmanship, generous customization and supreme finishing. For those and many more reasons, Mosaic's small, passionate team has earned a deserved reputation as the leading light in American small-batch bike manufacturing.
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