The Mosaic GT-2 45 will delivers the riding experience you expect from a Mosaic, at a price point that rivals the plentiful mass-produced options that are available. Like every Mosaic, the GT-2 45 is built by their team of exceptionally skilled craftspeople in Boulder, CO every step of the way from design, to framebuilding, welding and finishing.

The Black Magic Paint Cerakote Edition Frameset features our own special finish and is only available here at Black Magic. The includes ultra thin matte ceramic logos painted on the frame and a matching painted headbadge. The standard color is black but many other matte colors are also available. Please call or email for a current list of optional colors!

The GT-2 45 is designed around 45mm tires, meaning you’ll likely find yourself riding routes you never thought possible on a “road bike”, and trust us, that’s where the most fun is to be had! Most times up to 48mm (measured) will clear in the frame and fork for those looking for even larger tire clearance. The GT-2 45 also works well with a second pair or wheels set up with a larger slick for road/smoother gravel riding for even more versatility and value.

Complete bike build available with Sram, Shimano, and Campagnolo groups. Please call or email to discuss options.

Frameset Features

Tubeset || T3A/2.5V Straight Gauge Titanium

Fork || Columbus Futura Cross + (adjustable rake 47/52mm)

Headset || Cane Creek 40

Brake Mount || Flat Mount Disc

Brake Routing || Internal (External available upon request)

Axle Spacing || 12x100 Front // 12x142mm Rear

Bottom Bracket || Threaded English 68mm

Seatpost Diameter || 27.2mm

Front Derailleur Mount || Clamp On

Water Bottle Mounts || Three - Down tube (top and bottom) and seat tube

Tire Clearance || 48mm 

Chainline || Gravel Chainline (Must use SRAM XPLR, Force Wide or Shimano GRX.

Drivetrain Compatibility || eTap, Di2, or external mechanical specific.

Other Finish Options || Standard Raw Finish, Mosaic Paint Layouts, Full custom Black Magic designs. Call or email for pricing.

Sizing || 48, 50, 52, 54, 55, 56, 58, 60, 62, full custom

Lead Time || 10-12 weeks for custom, 3-4 weeks stock geometry.

Starting at $5000 (Frameset)

• Once your order is placed, we will reach out to confirm cable routing/drivetrain spec, logo colors, and any other details.

• Enve stem and seatpost not included in frameset price but can be added for an additional cost.

• Please inquire about availability/lead time if your size/configuration is not in stock