GEAR DIVE
Mosaic has modernised every frame in its titanium lineup for 2026 and simplified the names — and, for the first time, boxed up fully-spec'd framesets that ship in days, not weeks.
There has always been an unspoken contract when you commission a titanium frame: the bike will be exactly what you want, and you will wait for it. The wait is part of the romance — the geometry chart, the paint decisions, the long weeks while someone in Boulder mitres and welds a set of tubes with your name on them. Mosaic’s 2026 product update doesn’t tear that contract up. It adds a second door.
The update, announced at the end of June, touches effectively everything. Every model gets a spec revision, the whole catalogue gets renamed, and Batch Built — Mosaic’s in-stock program — expands in a way that changes what it means to buy one. The short version: the lineup is now four series and eight models (R for road, the new AR badge for all-road, G for gravel, M for mountain), every frame is more modern than it was in May, and some of them are sitting in boxes in Colorado, ready to ship within a day or two of ordering. We should talk about that last part.
First, the housekeeping. Mosaic has dropped the alphabet soup. The RT-1 iTR and RT-2 iTR are now simply the RT-1 and RT-2, and the GT-1 iAR and GT-2 iAR become the AR-1 and AR-2 — all-road graduates from a suffix to a series of its own, which feels overdue given how many of the Mosaics we’ve built lately lean exactly that way. (The gravel bikes keep their badges — the GT-1 i45 and GT-2 i45 stay GT; it’s only the all-road iAR that’s been re-lettered.) Same bikes, same geometry, same builds. The series now tells you the use case and the number tells you the tier: 1 is the flagship frameset module, 2 is the more attainable frame-and-fork. That’s the whole system.
The meat of the update is spec, and it reads like a checklist of everything the modern drivetrain and cockpit world asks for. The 1-Level framesets are now built around an IS52 integrated headset, a T47 threaded bottom bracket, fully internal cable routing and a UDH dropout — and they’re sold as what Mosaic calls a Frameset Module: frame, fork and headset plus an ENVE In-Route stem and seatpost included as standard, so the front end arrives ready for cables to disappear into it. Mosaic’s line is that this is the most modern spec available in titanium at the price, and we can’t think of a counter example.
The 2-Level frames get their own version of the same treatment: a 44mm head tube with fully integrated cockpit routing — cables vanish at the stem — a threaded BSA bottom bracket, UDH, and a choice of ENVE In-Route or Cane Creek HCR cockpits, with Mosaic’s Ghost raw finish standard.
And clearance grows where it counts. The RT-2 now takes up to a 35mm tire — up significantly on the outgoing bike, enough that Mosaic says it rides and fits like an entirely new machine — and the AR-2 clears 40mm, which is genuine mixed-surface territory without diluting the all-road character that defines the series.
Batch Built is Mosaic’s in-stock program: standard sizes from 48 to 62cm in even numbers, fixed finishes, full premium spec, welded in batches in Boulder and boxed. Until now it was a 2-Level affair. For 2026, 1-Level Frameset Modules join the program for the first time — the full IS52 / T47 / ENVE-cockpit spec, in Matte Knockout or Mosaic’s Factory raw finish, at $7,500. That’s around $2,000 below comparable titanium framesets at this spec level, and it ships within a day or two of ordering. The 2-Level Batch Built frame-and-fork, in Ghost raw, is $4,250.
Inventory lives on mosaiccycles.com — and when you order, you can elect to have it shipped to your dealer. Choose Regroup and the box lands in Tempe, where we’ll build it into a complete bike, dial the fit, and hand you a finished thing rather than a project on the garage floor.
The 2026 Mosaic, at a glance
The made-to-order Mosaic isn’t going anywhere — it remains the point of the brand. Every MTO frame is still built to your exact geometry, with custom fit standard at no upcharge, on a lead time of around six weeks; 1-Level Modules start at $8,250, 2-Level frames at $5,000, and the paint program runs from fifty-plus standard colors through two-tone and fade layouts to the fully bespoke Artist Series.
So the question isn’t which Mosaic is better — it’s which door you walk through. If your fit lives on a standard size chart and titanium-in-days sounds as good to you as it does to us, Batch Built is a remarkable thing. If you’ve been circling the dream build — your geometry, your paint, your parts — that conversation starts with a coffee in Tempe. Either way, we’d love to help you plan it. Swing by the shop, or start a build enquiry from any Mosaic page on the site, and we’ll take it from there.
