Our Dragonfly tandem, which is available in our Road or Adventure categories, represents the best that Calfee can offer. Unmatched and unparalleled, your dream bike made just for you! 

Our Dragonfly tubing uses high modulus carbon fiber (66 msi) laced with Boron fiber to build the lightest possible tandem bicycle frame without sacrificing stiffness, durability and ride quality.  Our Dragonfly tandem frame, size Large/Medium, weighs only 2900 grams or 6.25 pounds.


Our Tetra Tandem provides the characteristics of a lightweight race bike, but with the durability to handle all types of terrain; from road riding in the Alps to aggressive trail riding on our full-suspension tandem. The Tetra can do it all.

Our Tetra tubing is built with an intermediate modulus carbon (42 and 55 msi) at 3160 grams or 6.8 pounds in a Large/Medium.  Notably, there is no weight limit on either our Dragonfly or Tetra tandem frames; certain tandem teams might benefit from enhanced frame stiffness. The Dragonfly might be described as livelier owing to the lighter, stiffer tube set.  The thicker, tougher tubes make the Tetra a popular choice for teams who opt for couplers.


Given carbon’s inherent qualities, why not?  From our Technical White Paper:  Carbon fiber exhibits the most desirable performance characteristics of any of the frame-building materials explored to date.   It can be designed to be laterally stiff under heavy pedaling forces and still be light. It can absorb road shocks well, and still handle crisply while efficiently delivering complete power to the drive train. It can be durable and not subject to fatigue failures while remaining strong enough to stand up to unexpected impacts and torsion forces. It can lend itself to attractive finishing and resist corrosion or attack by the elements. And it can be formed in an attractive, functional way allowing it to move through air resistance easily.



In summary: a bike frame with carbon fiber tubing can be stronger, lighter, stiffer, more fatigue resistant and comfortable than a steel, aluminum, magnesium, titanium or hybrid-carbon tubing bicycle.  Our tandem frame design leverages the beneficial and intrinsic attributes of the carbon fiber material to manifest the best riding tandem bicycles in the world.


There are many good reasons to choose Calfee Bamboo for your next tandem bicycle frame. Calfee Bamboo bicycle frames are very stiff, transferring power efficiently; are durable, resisting damage from stress and impacts; are comfortable, surpassing aluminum, steel, titanium and most carbon frames in smoothness. Our bamboo tubes mitered together and bound by epoxy soaked hemp fiber create a frame whose most notable characteristic, beyond beauty, is this incredible vibration dampening.

Compared to our carbon tandem frames, our bamboo enjoys similar ride characteristics.  The subtle weight penalty (a Large/Medium bamboo tandem frame weighs about 8.5 pounds) may be offset by our bamboo’s beauty, uniqueness, comfort and durability.  Our bamboo frames are an excellent choice for tandem teams interested in particularly rough roads.


Our paint shop has been painting carbon bicycle frames since 1989 and is widely regarded as the industry’s premier carbon paint & finish facility. Tap into our creative resources, to help you create your dream machine. Our in-house specialists can assist you in creating a personalized design and facilitate any paint scheme.

1 (800) 965-2171