Ritchey Ultra 29" Mountain Frame, Sierra Slate



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Ritchey mountain bike frames carry a pedigree few, if any, can rival. Each Ritchey mountain bike is informed by decades of the skill, mastery, and insight that comes from building thousands of bicycle frames before ever tackling the first MTB that bore the Ritchey name. By employing a ceaseless dedication to hands-on research, innovation, and creativity; modern Ritchey MTB frames deliver the same level of satisfaction and enjoyment as they did at the birth of the sport so many years ago.

Good design withstands the test of time, and the latest iteration of Ritchey's Ultra is a prime example. Like its predecessor from 30 years prior, the ALL NEW Ultra welcomes a fresh generation of riders looking for a modern, versatile steel hardtail that occupies a unique ride space from cross-country riders looking to get rowdy and go big, to enduro riders lusting for some all-mountain shredding.

Designed around a 120mm travel fork and super stable Boost 148 spacing, most of the fun is in the wheels. Designed to accommodate 29" or 27.5" wheels, the Ultra is highly versatile. Throw on some 29s for some trail-smashing XC riding, or saddle up some 27.5+ for some serious no-holds-barred shredding. The Ultra is a rough and rugged trail master that doesn’t know when to quit.

  • Built from proprietary heat-treated, triple-butted Ritchey Logic II tubing
  • Stealthy internal dropper post routing for 30.9mm post
  • Versatile frame accommodates 27.5 x 2.8 and 29 x 2.4 tires
  • Optimized for 120mm suspension travel
  • Ultra-light Forged and machined tapered head tube
  • 12x148mm Boost thru-axle dropout with replaceable stainless steel derailleur hanger
  • 30.9mm seat tube with stealth dropper routing
  • Designed to work with Boost offset cranks with a 52mm chainline
  • Designed to accommodate 1X or 2X chainwheels
  • Fits up to a 38t x 1 or 26/36t x 2 rings (BOOST cranks must be used for proper chanline (SRAM XX1 BOOST 38t or Shimano FC-M8000-B2 36/26t recommended)
  • Headset not included


  • Color: Sierra Slate
  • Material: Ritchey Logic Tubing
  • Available Sizes: S (15"), M (17"), L (19"), XL (20.5")
  • Headset: Integrated 1.5” tapered
  • Headset Upper Bearing: 41.8mm OD / IS42/28.6 (S.H.I.S.)
  • Headset Lower Bearing: 52mm OD / IS52/40 (S.H.I.S.)
  • Tire Size: 27.5”x2.8” up to 29”x2.4” tires
  • Front Derailleur Clamp: 34.9mm
  • Bottom Bracket: 73mm English threaded
  • Weight: 2570g (L/19")