One of a kind, do it all machine. This revolutionary platform guarantees superior performance.


Experience, opportunity, innovation and technology collided to catalyze our new frame model, the Manta.  Five years in the making, the Manta is a platform that leverages a patented, active suspension system at the rear wheel to enhance traction, power transmission and comfort to increase rider performance.  Like all Calfee frames and components, the Manta is hand crafted and painted in our workshop in Santa Cruz County.




  • Available in Pro (road), Adventure (endurance/gravel) and Cyclocross(CX)
  • Available with 12mm rear suspension (coil spring, 4 stiffness options) or a fixed/rigid rear wishbone
  • Suspended Manta will no longer require struts under the BB
  • Rim or dual disc brake (mechanical or hydraulic)
  • Compatible with mechanical and/or electronic drivetrains, compatible with internal battery and wiring systems
  • Multiple bb sizes available
  • Pro tire clearance; 25c mounted on a wide road rim
  • Adventure and CX tire clearance; 650b x 42mm and 700c x 35mm tire
  • Internal rear brake cable routing
  • 44mm head tube allows use of a tapered or straight steerer
  • 56cm Manta frame w/suspension weighs 2.75 pounds
  • Manta Pro frame retails for $4895
  • 25 year warranty
  • Crash protection; the registered owner is protected by a $350 carbon repair credit for a term of 5 years

Other Manta Photos

More About the Manta


This model available in the following geometry:


44, What’s it for?

What is the idea behind the new 44 models you ask?  Our classic model types, Dragonfly, Tetra, and Luna, are now available with 44mm head tube diameters and a matching oversized down tube.  These changes create capability with tapered steerer … Continue reading

Sneak Peek: NAHBS 2017

What’s headed to this year’s NAHBS 2017


 For those who are unable to make your way to the NAHBS show this weekend, here are a few photos of our bikes. MTB FULL SUSPENSION TANDEM MANTA PRO DRAGONFLY 44 ADVENTURE DRAGONFLY 44 PRO TETRA 44 PRO DRAGONFLY 44 … Continue reading