The Wyvern is our 27.5+ hardtail mountain bike. It’s designed to be ridden hard on any kind of singletrack you can throw at it. It will also fit 29 inch wheels if that’s your cup of tea. It rides well fully loaded with bikepacking gear. It has a tubeset carefully chosen to be as light as possible while still producing a bike you can ride for decades. And like all our bikes, it’s hand built right here in Durango, Colorado.

Thermlx logoPMW logoThe Wyvern is built with Vari-Wall seamless tubing. Vari-Wall has been manufacturing bike frame tubes for more than 20 years out of their Columbiana, Ohio location. Their commitment to American manufacturing and high quality products make them a perfect source for our frame tubes. Most of the frame components such as dropouts are sourced from another American manufacturer, Paragon Machine Works in Richmond, CA.

The frame highlights include:

  • 27.5 x 3″ tire clearance
  • 68 deg. head tube angle
  • 31.6 seatpost for dropper compatibility
  • 148x12mm boost rear end
  • Triple bottle bosses below downtube for cargo carrying
  • Full length cable housing

Frame with single solid tone powder coat:  $1200

When you order a Wyvern, you’ll be able to choose from one of our powder coat color options. Check out our Colors page to see what’s currently in stock!

The Wyvern is stocked in 4 sizes that should fit the vast majority of mountain bikers. Making them in stock sizes allows us to offer a competitive price on a handcrafted American made frame. You get all the craftsmanship and attention to detail for half the price and half the lead time.



A bike is almost like a living thing. If the frame is the skeleton of the bike, the geometry is the soul.

The way a frame rides is wholly determined by the geometry the builder has chosen. Each angle and dimension is intertwined so that any adjustment to one affects all others. I’ve carefully picked the right blend of pedaling efficiency, responsive handling, stability and playfulness so that the Wyvern handles just the way I want it to.

Wyvern Geometry pic

If you are interested in an XS or XXL frame, just get in touch. I don’t stock those sizes but I can definitely build you one. Contact me and we can discuss the details of geometry and lead times.


If you’re ready to order a Wyvern frame or complete bike, fill out and submit our order form:
Wyvern Order Form