IN BRIEF
American builder Mosaic Cycles is adding a second bike to its high-end “Zero Ops” programme, the AR-Zero. After the road-focused RT-Zero, this new model targets all-road riding: a handmade titanium frame, an integrated carbon seatmast and room for tyres up to 40 mm. The brand presents it as a piece to look at as much as to ride, with a new painted “Chrysalis” finish. Production will remain confidential, and the bill follows suit: from $11,000 US for the frameset — fork and integrated ENVE cockpit included — and up to $24,000 US as a complete bike.
| Type | All-road (between road and gravel) |
| Frame | Handmade titanium + carbon seatmast (Mosaic carbon topper) |
| Tyre clearance | Up to 40 mm |
| Programme | Zero Ops (2nd model, after the RT-Zero) |
| Finish | Artist Series No. 9 Chrysalis |
| Frameset price | From $11,000 US (frame, fork, ENVE cockpit, seatmast and topper, finish included) |
| Complete bike price | $20,000 to $24,000 US |
| Production | Limited run (30 RT-Zero and AR-Zero combined at launch) |
Mosaic Cycles is one of those workshops that treat the titanium bike as a piece of craftsmanship. With the AR-Zero, the American brand is extending its “Zero Ops” programme — until now limited to a single model — and applying it this time to an all-road bike, that blurred territory between road and gravel.
A second bike for the Zero Ops programme
The AR-Zero follows the RT-Zero, unveiled last year as Mosaic’s vision of the modern handmade titanium road bike. Zero Ops is not a product line but an internal research and development programme: the brand uses it to explore new details of construction, machining, manufacturing and finishing. On the AR-Zero, that translates into a carbon seatmast capped with an in-house carbon topper, CNC-machined parts and neatly routed internal cabling.
Between road and gravel, tyres up to 40 mm
The positioning is clear: Mosaic is targeting the space where 35 mm tyres have become common, where 40 mm makes sense, but where the rider still wants a lively bike when the pace picks up. The carbon seatmast and its topper give the AR-Zero a more integrated silhouette than a conventional round-post build, and set it apart from the brand’s usual all-road bikes. According to Mosaic, this is not a standard frame simply opened up to take bigger tyres, but a model designed from the outset within the Zero Ops programme.
Limited run and collector’s item pricing
The AR-Zero also introduces a new finish, the “Artist Series No. 9 Chrysalis”, an extension of the in-house paint programme that accounts for a good part of Mosaic’s reputation. Production will deliberately stay small: for the launch period, the brand says it is accepting orders for a total of 30 RT-Zero and AR-Zero bikes combined, with each example demanding more hand work than a standard frame.
On price, the frameset starts at $11,000 US: it includes the frame, the fork, the one-piece ENVE cockpit, the carbon seatmast and its topper, finish included. Complete bikes are expected between $20,000 and $24,000 US — an unapologetic boutique-bike positioning, a long way from simply gaining tyre clearance. More details on the Mosaic Cycles website.
