Mosaic RT-1d Titanium Frameset

A refined titanium road frameset built for modern performance and everyday road riding.

Overview

The Mosaic RT-1d is a versatile titanium road frameset designed to deliver a balanced, confident ride with the durability and ride quality titanium is known for. Built using Mosaic’s custom T3A/2.5V double-butted titanium tubeset, the RT-1d offers efficient power transfer, composed handling, and long-term reliability for performance-focused road riders.

With rider-specific geometry and thoughtful compatibility for modern drivetrains and braking systems, the RT-1d blends classic road feel with contemporary standards. It’s a frame built to be ridden hard, maintained easily, and enjoyed for years.

Frame Design & Ride

The RT-1d features balanced road geometry that feels responsive without being nervous, stable without feeling muted. Clearance for tires up to 700×30mm allows riders to tune comfort and grip while preserving a true road-bike character.

Clean routing options support mechanical, electronic, or wireless drivetrains, giving the RT-1d flexibility across build styles while maintaining a tidy, purposeful aesthetic.

Key Features

• Custom T3A/2.5V double-butted titanium tubeset
• Rider-specific geometry
• 700×30mm tire clearance
• Chris King InSet 8 headset included
• Flat mount disc brake compatibility
• Choice of Mosaic painted finish

Technical Details

• Frame Material: Titanium
• Head Tube: 44mm
• Bottom Bracket: 68mm BSA
• Seatpost Diameter: 30.9mm
• Front Derailleur: Clamp-on mount
• Brake Mounts: Flat mount
• Axle Spacing: 12×100 front / 12×142 rear
• Shift Routing: External mechanical, internal Di2, or wireless AXS
• Brake Routing: Internal downtube

Ideal Use

• Performance-oriented road riding
• Riders seeking titanium durability with modern standards
• Custom builds tailored to fit, finish, and drivetrain preference

Custom Order Information

This product is built to order. The price shown represents a pre-order deposit toward your custom Mosaic frame.

Final pricing may vary based on specifications. The remaining balance will be due once your order is complete and ready for pickup.

Please contact us prior to ordering with any questions regarding specifications, timelines, or the custom build process.

For sales inquiries or custom build consultations, reach us at info@categoryonecycles.com.

For service appointments, repairs, or bike fitting, contact service@categoryonecycles.com.

You can also reach us by phone at (610) 509-3554