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Taking the trail bike to uncharted levels, the six inch (152mm) travel Yeti SB-66 C expands on the quickly building, trail-dominating reputation of Yeti’s Switch Technology suspension by adorning it with a weight-dropping and stiffness-enhancing carbon chassis. In fact, the hand-laid high modulus carbon front and rear triangles knock a whopping pound and a half off its aluminum counterpart—and that’s without sacrificing anything to the stiffness department. That’s right; you’re looking at a six pound (2.72kg), six-inch trail bike.

This is the first Yeti SB (Super Bike) series frame to feature collet-type pivot hardware, which ensures the correct bearing preload while protecting the structural integrity of the carbon fiber. Enduro Max angular contact bearings fill the bores and offer ultra-tight, flex-free tolerances while easily managing side loads that would send conventional cartridge bearings straight to the dump.

The heart of the SB line lies in the suspension design. Unlike multi-link systems, which require linkages packed in between the main triangle and rear triangle, Yeti’s Switch Technology features an eccentric mechanism buried low in the frame—enabling super-short chain stays and a low center of gravity for lively handling. This compact eccentric continuously adjusts the lower pivot position for a rearward, small-bump-damping axle path while maintaining a firm, pedal-friendly platform. Towards the end of the suspension’s travel, the eccentric rotates in the opposite direction for a responsive mid-stroke, and finally to the end position where the suspension becomes progressively stiffer to provide big hit absorption. Think efficient pedaling perfectly meshed with big hit capabilities.

Yeti SB-66 C DetailAside from the major drop in heft, updated bearings, and hardware, the SB-66 C chassis is loaded with new-school features. The boys in Colorado provide the option to run a triple, double, or single ring with a chain guide thanks to removable ISCG tabs. There’s also routing for a seat dropper post, a direct mount for the front derailleur, and it’s only available with the stiffness enhancing 12x142mm thru-axle. A tapered inset head tube (44/56mm) ensures front-end precision and strength for long-travel forks. Yeti recommends a fork in the 150-160mm range (resulting in 67 or 66.5 degree headtube angle, respectively). If you’re aiming to charge through the rough, then match your SB-66 C to a 160mm fork with oversized stanchions, but if you want an all-day backcountry machine, add a 150mm travel fork with 32mm sanctions for climbing ability and some weight reduction.

Like all factory-prepped Yetis, the SB-66 C has its rear suspension motion controlled by the highly respected Fox RP23. However, this isn’t any run-of-the-mill RP23. Yeti has long worked closely with Fox Shox—including their jointly run World Cup mountain bike race team—so you can be assured that this factory-tuned RP23 (equipped with a Kashima coated stanchion for ultra smooth and durable out-of-the-box performance) is the perfect match to the SB-66 C.

The Yeti SB-66 C’s available in raw carbon with Black, Grey, or Turquoise decals. It comes in four sizes from Small to X-Large. The SB-66 uses a High Direct mount for the front derailleur, a post mount rear disc, a 73mm English Bottom Bracket, and you'll need a 30.9mm seatpost. The manufacturer warranty length is five years.

US Yeti dealers are prohibited from shipping Yeti bicycles to any country other than Canada, Mexico or the US.

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