Mosaic RT-1 50cm Frameset drive side Mosaic RT-1 50cm Frameset non-drive side Mosaic RT-1 50cm Frameset sticker Mosaic RT-1 50cm Frameset drivetrain Mosaic RT-1 50cm Frameset front wheel Mosaic RT-1 50cm Frameset cockpit Mosaic RT-1 50cm Frameset crank
~ 50cm SKU: FRD10031

Mosaic RT-1 50cm Frameset

Condition: PRE-OWNED
Regular price

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About this item

Mosaic’s RT-1 represents the pinnacle of titanium road bike construction. It’s handcrafted right here in Boulder, CO, and sports a blend of oversized internally double-butted and thin walled straight gauge 3/2.5 tubes. This combination makes the bike stiff, responsive, and lightweight, all without losing the sublime ride quality titanium frames are known for. This means that while the RT-1 is a machine that’s built for speed, responding instantly when you put the power down, it’s still compliant enough to keep you feeling fresh on those long all-day rides. Its titanium construction also means that the frame will maintain these enviable characteristics throughout its lifetime; resisting corrosion, fatigue, and damage with little maintenance. The frameset is finished off with ENVE’s carbon road fork, itself a fine work of art. Like the frame it resides in, it is stiff and precise, while providing ample damping for vibration and road noise. The RT-1 is a race bred machine, ideal for the discerning competitor who is interested in something that will both perform and last, and do it all beautifully.

Light wear and tear from cable rub, heel rub, chain, etc.

Some general marking and some light nicks from previous build and use.


Year ~
Brand Mosaic
Model RT-1
Size 50cm
Frame Material Titanium
Fork ENVE Road 2.0, Carbon Fiber
Steerer Tube 189 mm, 1-1/8 in
Brake Type Caliper - Side Pull
Front Derailleur Mount 34.9mm
Headset Not Included
Bottom Bracket Not Included, PF30
Seatpost Diameter 30.9mm
Seatpost Clamp Included
Rear Axle Spacing 10x130mm
Saddle Height Range N/A
Weight 3 lbs 15 oz
Drivetrain Compatibility Mechanical


Recommended Rider Height N/A
a. Effective Top Tube 520 mm
b. Seat Tube 500 mm
c. Seat Tube Angle 73.5°
d. Head Tube Angle 72.5°
e. Head Tube 108 mm
f. Stack 513.1 mm
g. Reach 367.4 mm
h. Standover Height 742 mm
i. Saddle Height Range N/A

“I love this company! My beautiful bike arrived promptly, was packed brilliantly, and tuned perfectly. It was exactly as described.”

— Kari K.


“In the past month, I purchased a road bike and MTB from TPC. Very happy with the price and condition of both bikes! I was riding the bikes 10 minutes after I received them.”

— David H.

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