Big tires big speed
OUR MOST CAPABLE GRAVEL BIKE YET, READY TO RACE
Years of experience designing, fabricating, riding, and racing bikes in every condition imaginable have led us to the GT-1 i55. In that pursuit, we ended up with a bike made for one purpose: to serve the modern gravel rider and racer.
At the heart of the GT-1 i55 is Mosaic's time-tested, double-butted titanium tube set and proven geometry foundation, delivering confident handling, responsive performance, and durability, year after year.
What sets this model apart is 55mm of tire clearance. To achieve this modern spec, Mosaic undertook a full redesign of the frame: a 3D-printed chainstay yoke for shorter chainstay length, 55mm tire clearance, and clearance for a 50-tooth chainring; an offset seat tube to accommodate the larger tire; and a proprietary Mosaic-designed carbon gravel fork with appropriate gravel offset and a suspension-corrected axle-to-crown.
Put it all together, and there's nothing the GT-1 i55 can't do.
At the heart of the GT-1 i55 is Mosaic's time-tested, double-butted titanium tube set and proven geometry foundation, delivering confident handling, responsive performance, and durability, year after year.
What sets this model apart is 55mm of tire clearance. To achieve this modern spec, Mosaic undertook a full redesign of the frame: a 3D-printed chainstay yoke for shorter chainstay length, 55mm tire clearance, and clearance for a 50-tooth chainring; an offset seat tube to accommodate the larger tire; and a proprietary Mosaic-designed carbon gravel fork with appropriate gravel offset and a suspension-corrected axle-to-crown.
Put it all together, and there's nothing the GT-1 i55 can't do.
Highlights
shortened chainstay length with offset seat tube
Fits up to 50t gravel offset chainring
3D printed titanium chainstay yoke
Fully integrated brake routing
UDH dropout compatible
the GT-1 i55 gravel race bike
fully internal brake routing through chainstay and bb
One by gravel groupset gearing only
Matte Knockout paint layout included, choice of 50 standard colors
Double butted titanium tubeset
Suspension corrected carbon fork with 55mm tire clearance
Enve Carbo in-route stem and seatpost included
Rider specific, custom, geomtry included with Made to Order frames
Features
- Custom 3A/2.5V Double Butted Titanium Tubeset
- Rider Specific Custom Geometry Included
- 700c x 55mm Tire Clearance
- IS52/IS52 Headtube
- 27.2mm Seatpost Diameter
- 140mm Native Flat Mount Brake Mounts (160mm with adapter)
- UDH dropout and Hanger
- Fully Integrated Brake Routing through cockpit & downtube
- Mosaic Proprietary gravel fork, suspension corrected
- ENVE In-Route Headset included
- T47 68mm Bottom Bracket
- 1X Gravel Chain line only, fit up to 50t chainring
- Internal Di2 or Wireless AXS shift routing
- 12x100 Front // 12x142 Rear
- ENVE In-Route Integrated Stem & Seatpost Included
- Choice of any standard Mosaic Finish, painted or raw titanium
Made To Order Lead Time : 8 Weeks
Made to order from scratch including custom geometry, configuration and choice of finishwork.- Chris King Aeroset 1*
- Extra H2O Mounts
- Fender Mounts
- Rack Mounts
- Pump Peg
- Chain Hanger
- Mosaic Artist Series Finishwork*
* options at additional cost.
Contact Mosaic for pricing.Geometry
Rider Specific Geometry
With a fit-first design approach, custom geometry is drawn up based on bike fit information provided by you and your Mosaic Dealer. Taking into account each rider’s aspirations and use case for the bike, we continue to fine-tune the design to culminate in a riding experience and handling that is perfect for each unique frame that we build. Custom geometry is included as standard on our 1-Level bikes, giving us the opportunity to build the perfect bike for each rider 100% of the time.
Your Bike. Your Fit.
Your Geo.
Geometry driven by your body, made to fit your contact points.
Start Your Mosaic Now
Mosaic Batch Built Geometry
The Mosaic Batch Built program utilizes our proven size run of geometry to deliver a simpler, more standardized offering, available in a shorter timeframe. By building standard geometry frames together in a batch, configured in an intentional and similar way, we’re able to deliver an in stock batch-built frame immediately. If you’re looking for a more personalized finish or custom geometry take a look at the Made to Order program.
Same Mosaic Quality. Better availability.
Fine tuned standard geometry, beautiful finish, ready to deliver in days.
Find in stock framesets now
| Frame Size | XS | SML | SML-MED | MED | LRG | XL | XXL | 3XL |
|---|---|---|---|---|---|---|---|---|
| Frame Size | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 |
| HT Angle | 70 | 71 | 71 | 71 | 71 | 71 | 71 | 71 |
| ST Angle | 73 | 73 | 73 | 72 | 72 | 72 | 71 | 71 |
| ST Length (C-T) | 480 | 500 | 520 | 540 | 560 | 580 | 590 | 600 |
| TT Length (Eff) | 520 | 530 | 540 | 550 | 570 | 585 | 600 | 610 |
| HT Length | 100 | 115 | 130 | 140 | 150 | 175 | 195 | 220 |
| Wheelbase | 1022 | 1029 | 1030 | 1035 | 1050 | 1065 | 1074 | 1084 |
| Chainstay Length | 430 | 430 | 430 | 430 | 430 | 430 | 430 | 430 |
| Fork Offset (Rake) | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 |
| Front Center | 605 | 612 | 613 | 618 | 632 | 647 | 656 | 667 |
| Trail | 75 | 71 | 68 | 68 | 68 | 68 | 68 | 68 |
| Standover | 772 | 790 | 807 | 821 | 836 | 854 | 868 | 882 |
| BB Drop | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 |
| BB Height | 287 | 287 | 287 | 287 | 287 | 287 | 287 | 287 |
| TT Angle | 9 | 8 | 8 | 7 | 5 | 5 | 6 | 7 |
| Stack | 543 | 559 | 575 | 584 | 594 | 618 | 636 | 660 |
| Reach | 373 | 379 | 379 | 381 | 392 | 399 | 402 | 404 |
Finishes: Choose your wow factor.
The finish is the first thing we see. And when you’re excited by the sheer look of your Mosaic, it also gets you excited to get out and ride. And that’s what it’s all about. So whether you choose to let the metal be the star of your titanium frame, or opt for a super colorful paint scheme that’s uniquely you, the goal is to come up with a look that’s going to light you up and get you out there. Ready? Let’s make it yours.
Titanium Finishes
Classic, clean and light, this is the choice for those who love the beauty of raw metal, impeccable welds and subtle logos. Choose between Ghost, Shadow, and Mosaic Factory titanium finish options.
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Painted Finishes
Go big. Go loud. Go subtle. Go pure. With multiple Standard and Artist Series layouts to choose from and a nearly infinite number of color combinations, it's easy to make your Mosaic uniquely yours.
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Artist Series
One-of-a-kind by design, this is where paint becomes art. From the fractured lines of Shatter to the cosmic depth of Nebula, each Artist Series layout is hand-applied to turn your Mosaic into a true original.
Artist Series