Ti Omega’Beast Frame

As Fat as it Gets!

When the O’Beast isn’t enough, you must call upon the Omega’Beast! Our fattest fatbike yet (and the first production fatbike with more than 5″ of tire clearance), the Omega’Beast can cross snowfields, climb stairs, and descend rock gardens with ease thanks to clearance for tires OVER 5″ wide! There was no avoiding the 197mm rear spacing  on this one…maximum tire clearance is needed! The Omega’Beast comes in a brushed (polished) finish with a bead blasted logo only and has rack mounts. The frame has clearance for all tire/rim combinations: 29×3, 27.5×4, 26×5+.

If Q-factor is an issue, check out our O’Beast frame which can run a narrower crank with a small tire clearance penalty.

Is there a little detail you don’t like? Want to tweak the geometry a bit? Have a cool idea for a frame? As with all our titanium frames, customization is no problem. For an extra $300 we can edit this frame to your liking, or start completely from scratch. Contact us any time and let us know what you’re looking for. We can help you design a frame and give you an accurate timeline for how long it will take to build.

  • 3/2.5 seamless titanium
  • Brushed finish with subtle bead-blasted logo
  • 12 sizes from 14″ to 25″
  • 4.8 pounds in medium size
  • Clearance for 29 x 3, 27.5 x 4.5, and 26×5.05″ tires
  • Rack and fender mounts
  • Two sets of triple bottle cage mounts
  • ZS44/ZS56 tapered headtube
  • 31.6mm seatpost
  • 34.9mm seatpost clamp
  • Internal dropper post compatible
  • 197mm thru-axle or 190mm quick-release
  • Belt drive compatible
  • Sliding dropouts with 20mm of adjustment
  • 100mm threaded bottom bracket
  • Under-the-downtube cable routing with bolt-on cable clamps
  • 5-year warranty to original owner, lifetime crash replacement



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We build our Ti Omega’Beast frames in 1” increments all the way up to 24″ but we usually stock even sizes 16-22″. Just scroll to the right so see specs for our larger frames.

Size 14 15 16 17 18 19 20 21 22 23 24
Seat Tube 14in 15in 16in 17in 18in 19in 20in 21in 22in 23in 24in
Effective TT 22in 22in 22.5in 23in 23.5in 24in 24.5in 25in 25.5in 26in 26.5in
Head Tube Length 105mm 105mm 110mm 110mm 120mm 120mm 135mm 135mm 135mm 135mm 135mm
BB Drop 76.5mm 76.5mm 76.5mm 76.5mm 76.5mm 76.5mm 76.5mm 76.5mm 76.5mm 76.5mm 76.5mm
Seat Tube Angle 73° 73° 73° 73° 73° 73° 73° 73° 73° 73° 73°
Head Tube Angle 69° 69° 69° 69° 69° 69° 69° 69° 69° 69° 69°
Stack 618mm 618mm 622mm 622mm 632mm 632mm 646mm 646mm 646mm 646mm 646mm
Reach 370mm 381mm 394mm 395mm 404mm 417mm 425mm 438mm 451mm 463mm 476mm
Chainstay Length Sliding dropouts have a chainstay length range of 475mm—495mm
  • BB height is based on 26 x 5.05” tires and a wheel diameter of 815mm.
  • Geometry table is based on a 490mm axle-to-crown fork.