da Vinci Designs – Custom Tandems

With several stock frame sizes, we can fit most everyone. For the teams with special requirements, we build custom frames.

Custom Frame with standard components: Add $300 +/- Call for quote

S&S Couplings on steel frames add $1900

We can substitute components on any standard or custom tandem, except the Grand Junction – Call for quote

Custom Tandems

To order a custom tandem, start with the stock size that closest matches your ultimate tandem (See Sizes and Dimensions) and call with your changes.

If you have a bike that fits you well and you are unsure of the exact dimensions, look at the drawing below, measure your bike (A,B,C,D for Captain : E,F, for stoker), and tell us what you come up with. Because there are limitations on tandem sizes and captain and stoker differences, we may have to make some sizing compromises so as to not compromise the bike’s handling.


Front Stem: Thomson Elite
10 deg. rise 60, 70, 80, 90, 100, 110, 120, 130mm N/C
17 deg. rise 60, 75, 90, 100, 110, 120, 130mm N/C
25 deg. rise 75, 90, 100, 110, 120mm N/C
40 deg. rise 75, 90, 100, 110, 120mm N/C
Rear Seatpost: Thundbuster Short Travel

Thudbuster Long Travel
Cirrus Kinekt

Wheels: Hand built White Industries hubs, Sapim triple butted stainless spokes, da Vinci V-23 or Velocity Dyad rims.

Spinergy Tandem Wheels $
Rolf Prima Tandems Wheels $

Cranks: da Vinci Designs Direct Drive CNC machined billet aluminum. Many lengths to choose from.

Three hole 120,140,160mm
Three hole 130, 150, 170mm

Saddles: Selle Italia Man Flow and/or Lady Flow

Selle Italia Man Flow
Selle Italia Lady Flow
Velo Serina