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 RS.  Five years in the making, the Manta RS 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, 3 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 RS 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:



Cyclist Magazine comprehensive review of our new Luna Pro 44.  Cyclist Luna Pro Review

Cyclist Magazine Meet Up In UK With Craig Calfee

James Spender, from Cyclist Magazine, met up with Craig Calfee at the BeSpoked Trade Show to follow up about what’s new at Calfee Design, like the Luna Pro 44.   Please click on the link to read more.  Cyclist Magazine … Continue reading

Review of the Adventure Manta RS

Check out “The Radavist” review of our Manta RS Adventure bike.  Photos by John Watson.