Models · Mosaic · GT-1

Mosaic GT-1 i45 (2026)

gravel · titanium · sizes 48–62 Custom Manufacturer’s website

Geometry ?

Mosaic GT-1 i45 2026 geometry in sizes 48–62: stack 532–650 mm, reach 365–399 mm, head angle 70.5–71.5°.

	48	50	52	54	55	56	58	60	62
Stack	532 mm	546 mm	567 mm	576 mm	581 mm	586 mm	605 mm	626 mm	650 mm
Reach	365 mm	371 mm	371 mm	373 mm	381 mm	385 mm	394 mm	397 mm	399 mm
Head angle	70.5°	70.5°	71°	71°	71°	71°	71°	71.5°	71.5°
Seat angle	74.5°	74.5°	74°	73.5°	73.5°	73°	73°	72.5°	72.5°
Seat tube (c-t)	480 mm	500 mm	520 mm	540 mm	550 mm	560 mm	580 mm	590 mm	610 mm
Head tube	100 mm	115 mm	135 mm	145 mm	150 mm	155 mm	175 mm	195 mm	220 mm
Top tube (effective)	515 mm	525 mm	535 mm	545 mm	555 mm	565 mm	580 mm	595 mm	605 mm
BB drop	75 mm	75 mm	75 mm	75 mm	75 mm	75 mm	75 mm	75 mm	75 mm
Chainstay	430 mm	435 mm	435 mm	435 mm	435 mm	435 mm	435 mm	435 mm	440 mm
Wheelbase	1006 mm	1023 mm	1024 mm	1030 mm	1040 mm	1045 mm	1061 mm	1066 mm	1081 mm
Fork offset	53 mm	53 mm	53 mm	53 mm	53 mm	53 mm	53 mm	53 mm	53 mm

Source: mosaiccycles.com, checked 13 Nov 2026 · bar position: worked out from published data

Manufacturer’s data sheet (PDF)

Build

Built to measure. The stem, bars and other parts are chosen to suit the rider, so the bike has no stock build. According to the manufacturer’s website.

Frames with similar geometry

Stack and reach within 12 mm of size 55 (stack 581 / reach 381 mm).

Superior XR 6 (alloy) (2026)size M · stack 581 / reach 381 mm Lapierre Crosshill CF (2026)size M · stack 581 / reach 380 mm Marin Four Corners (2026)size S · stack 580 / reach 381 mm Salsa Stormchaser (2024)size 56 · stack 581 / reach 382 mm Van Nicholas Rowtag (2026)size M · stack 582 / reach 381 mm SAVA Grus (2026)size M · stack 581 / reach 380 mm

Spotted a mistake or a missing build? Let me know.