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Yeti Cycles SB-66 Pro XTR Bike

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Item # YTI0053

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Item # YTI0053


Dripping in steamy suspension technology and top-of-line componentry, the SB66 Pro XTR Mountain Bike begs to be ridden hard and long. Packing a game-changing eccentric lower pivot, the SB66 climbs with hardtail proficiency and descends with the accuracy and stability of gravity-fueled rigs—without the sluggishness. Step up to the quick-handling and tossable SB66 and satisfy your primal urge.

  • Switch Technology uses an eccentric mechanism that continuously adjusts the lower pivot position for the perfect balance of pedaling efficiency and plushness
  • A rearward axle path at the beginning of the stroke lets the wheel roll over small bumps while maintaining a firm platform
  • At 100 millimeters into the travel, the link rotates in the opposite direction for a responsive midstroke, and finally to the end position where the suspension is independent of chain forces to avoid any feedback or spikes
  • The compact link assembly is located inside a single forged housing and connected to a stiff rear end via oversized pins to provide wallow-free, pinpoint handling
  • Kashima-coated Fox 32 with thru-axle and Float RP23 offer a wide range of adjustments for optimum control and performance in varying conditions
  • 2x10 Shimano Dyna-Sys XTR drivetrain offers ultra-fast and super-precise shifting between power-optimizing gear ratios
  • Shimano XTR Trail brakes with an oversized front rotor haul the SB66 down from speed with ease and traction-optimizing modulation
  • US Yeti dealers are prohibited from shipping Yeti bicycles to any country other than Canada, Mexico or the US.

Tech Specs

Frame Material:
full suspension
Pivot Type:
Switch Technology
Rear Travel:
160 mm
Rear Shock:
Fox Float RP23 (high-volume Kashima-coated Factory Series)
1.125 - 1.5 in Chris King
Accessory Cable Stops:
seat dropper
ISCG Tabs:
adapter available separately
FOX Float 32 FIT RLC (Kashima-coated)
Front Travel:
150 mm
DT Swiss EX500
Front Derailleur:
Shimano XTR
Rear Derailleur:
Shimano XTR Shadow Dyna-Sys
Shimano XTR Dyna-Sys
Shimano XTR Dyna-Sys
Chain Rings:
38 / 26 T
Bottom Bracket:
Shimano XTR
Brake Levers:
Shimano XTR BR-M988
Brake Calipers:
Shimano XTR BR-M985
Rear Rotor:
160 mm
Front Rotor:
185 mm
Easton Haven carbon fiber
Handlebar Width:
720 mm
Handlebar Rise:
Yeti lock-on
Thomson Elite 4X
Shimano XTR CN-M980
11 - 36 T Shimano XTR
Schwalbe Nobby Nic
Tire Size:
26 in x 2.25 in
Valve Stem:
Thomson Elite
Seatpost Diameter:
30.9 mm
Seat Collar:
alloy clamp
WTB Yeti
Measured Effective Top-Tube Length:
23.5 in
Recommended Use:
mountain biking
Manufacturer Warranty:
2 years

Reviews & Community


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undecided about this bike

    Bought it to replace my well loved and used 2006 Yeti 575. Very different bikes. Very different feel. Have one trail ride on it and half a dozen DH runs that involve a 35 minute road climb, so I really need to take it out on the trail more. I don't love this bike, and usually I do.

    Sometimes on the road climb up I can feel the suspension doing something that makes me think the grips are loose, first ride I stopped and checked the grips several times, but it was just how the frame moved. Coming down the dh isn't bad, stiffer than my 575 (but really, what isn't??).

    Think the wide handlebars are bugging me, steering seems twitchy, probably will try to move controls and grips in a bit to see if that's part of my issue.

    Had issues with the XTR discs, had to have a caliper warrantied. Rest of the components are working well. 2X10 is interesting, but works. Haven't had an issue running out of gears when climbing for the dh. If I was going to build this bike from scratch, it would look pretty close to this. I like the 2012 spec better than the 2013 spec. Not really excited with the Fox CTD system, wanted the CK headset, the 240 hubs are a nice treat as well.

    Let me get more miles and I'll come back and update this.

    Unanswered Question

    Does the rear shock have adjustability? I...

    Does the rear shock have adjustability? I thought it has 6"= 152mm. You list it as 160mm.

    Avg. ride time: 58m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    How much does this bad boy weigh guys?

    How much does this bad boy weigh guys?

    We'll let you know as soon as we fix the scale.The Enduro model came in at 27 pounds, 9 ounces, if that helps.