Speed is what the SB120 is all about, and this frameset is the starting point for your own fast trail build. Its 120mm Switch Infinity platform delivers brutally efficient power on the climbs and out of corners, but don't get too hung up on the numbers: it absolutely rips downhill, and you'd have to hit some seriously gnarly terrain to find its limits.

The SB120 is the evolution of the SB115, which became the premium choice for fast trail and XC riding. It leans further into trail territory with a little more travel and slightly more aggressive geometry, so it's still fast but more versatile. The frame is made from Yeti's TURQ carbon and comes with a FOX Float Factory shock.

As always with Yeti, the suspension has been extensively tested and refined. A fairly linear progression curve gives usable, active travel at 30% sag, small-bump compliance delivers excellent traction, and a supportive mid-stroke stops you blowing through the travel in turns or off jumps, with extra bottom-out control for rowdy moments. A compact one-piece shock extender pushes the shock forward in the frame, widening shock compatibility, lowering standover, making room for a water bottle and increasing down tube clearance.

Switch Infinity uses a patented translating pivot that changes direction as the bike moves through its travel. Through the pedalling zone it moves up, giving a flat, high anti-squat curve for an efficient, consistent platform; deeper in the travel it reverses, and anti-squat drops away to let the suspension move freely. You'll also find a threaded BB, UDH and internal cable routing ports.

Features

• 120mm Switch Infinity rear suspension, designed around a 130mm fork
• TURQ Series carbon frame
• FOX Float Factory shock included
• Usable, active travel at 30% sag with strong bottom-out control
• Compact one-piece shock extender for lower standover and bottle space
• Threaded BB, Boost spacing, SRAM UDH and internal cable routing
• Lifetime frame warranty

Sizing

• XS: 4'10" - 5'3"
• S: 5'1" - 5'7"
• M: 5'5" - 5'11"
• L: 5'10" - 6'3"
• XL: 6'1" - 6'7"
• XXL: 6'5" - 6'11"