Mosaic GT-1 i55 (Gravel Race Custom Module)
New for 2026: the GT-1 i55 replaces the GT-1 i45.
The GT-1 i55 is Mosaic's redesigned titanium gravel race module, made to order in Boulder, Colorado. New rear triangle with Mosaic's first 3D-printed titanium rear yoke, a purpose-built carbon fork and 55mm tire clearance.
- Custom 3A/2.5V double-butted titanium tubeset, rider-specific geometry included
- 700c x 55mm tire clearance (29 x 2.2")
- Mosaic proprietary carbon gravel fork, suspension corrected
- IS52/IS52 headtube with ENVE In-Route headset included
- T47 68mm bottom bracket, 27.2mm seatpost
- ENVE In-Route integrated stem and seatpost included
- Fully integrated brake routing through cockpit and downtube
- UDH dropout and hanger, 140mm native flat mount brakes (160mm with adapter)
- 1x gravel chainline only, fits up to a 50t chainring
- Internal Di2 or wireless AXS shift routing, 12x100 / 12x142 thru-axles
- Also available built around 32" wheels
- Choice of any standard Mosaic finish, painted or raw titanium
Lead time: approx. 6–8 weeks from order.
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Key Features
Crafted with precision and attention to detail, we ensure excellence. Designed to meet the highest standards, ensuring an exceptional experience every time.
Made to perform when it matters most, we offer quality that you can count on. Tested and proven to deliver consistent results, it's made for everyday use and beyond.
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