URSA Major Frame w/ Bluto

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URSA Major GEO Chart-01-01.jpg
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URSA Major Frame w/ Bluto

from 1,699.00
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The URSA Major sets a new standard for steel fatbikes with its ultra short chainstays, 197 thru axle stainless sliding dropouts, class leading standover clearance, and 100mm suspension fork compatibility. The URSA Major has been snow raced and tested in Utah, Idaho, Wyoming, and Colorado and on the dirt in Colorado and throughout Texas.  We've lowered the top tube on all sizes to give the best in class standover height. When you standover your bike in the snow you'll thank us.

Frame Details

  • Made in USA
  • CHUMBA USA Select Steel, ovalized chainstays and oversized tubes, bent downtube gives plenty of room for a Bluto fork in 360 degrees.
  • English threaded 100mm Paragon Machine Works Bottom Bracket. 
  • Oversized 44mm headtube fits tapered forks.
  • Paragon Machine Works stainless steel sliding dropouts
  • 3" - 4.8" Tire compatible, offering one of the shortest steel chainstay lengths out there for both tire sizes, 435mm with a 4.0 tire and 455mm with a 4.8" tire
  • Short chainstays are best for snow riding giving more traction in the snow and more balance. They also happen to be more fun for trail riding on a 26" fatbike.
  • The frame can be used with 190 Quick release hubs or 197 thru axle hubs, depending on the chosen insert.
  • 2 color options : Sherman Green or Range Blue (TELL US WHAT COLOR YOU'D LIKE IN YOUR ORDER NOTES AT CHECKOUT)

Stock models come with a rigid steel fork. Upgraded fork options include: Rockshox Bluto 100mm or Bluto 80mm and MRP RockSolid Fat Carbon 150mm Fork.

  • When upgrading to suspension, we recommend going for the full 100mm fork option on Medium and Large sizes, 80mm on Small. 
  • We've found the 69 headtube angle to be the best at snow and trail racing, which you'll have with the rigid or an 80mm Bluto. 
  • The 100mm gives a more aggressive trail stance and slacker headtube angle of about 68 degrees when sagged.