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Yeti SB66 RC4 Suspension Frame

The best way to describe the AS-R 5 Carbon is this: 4.75 pound Yeti frame with five inches of travel. At this weight, it is lighter than many of the lightest cross-country bikes on the market and it has the added versatility of being an amazing all-mountain rig.

So how did Yeti pull off this incredible feat? They coupled their extensive carbon fibre experience with award-winning, super-efficient, optimized active suspension design. Shook it on the test machine. Rode it more. And then repeated the process until it was perfect.

In the end, the bike exceeded expectations for efficiency, light weight and incredible stiffness. We think it will exceed yours as well.


  • Use: Built for XC/Trail
  • Material: High modulus, hand laid carbon fibre front and rear triangle
  • Head Tube: Tapered head tube (1 1/8" - 1 1/2")
  • Dropouts: QR x 135mm or 12mm x 142mm)
  • Rear Shock: Fox Float CTD Kashima
  • Head Tube: 68 degree with 120mm fork
  • Chain Stays: 16.9"/429mm
  • Bottom Bracket Height: 13"/330mm
  • Weight: 4.2lbs/1.91kg
  • Other: Internal cable routing on swing arm, Titanium hardware


  • Yeti Chip System: The Yeti chip system allows for an easy switch between a standard 135mm QR or the142mm x 12mm Shimano thru-axle system.

Buy Yeti SB66 RC4 Suspension Frame from Chain Reaction Cycles, the World's Largest Online Bike Store.