Cannondale’s Jekyll debuted in 2011. It was a gutsy bike, or really, two bikes. Click the handlebar-mounted travel adjuster and the Jekyll morphed from downhill slayer to climbing stud. The stout frame was uniquely tied together with 15-millimeter thru axles, and at the heart of it, the Fox-built DYAD pull shock. Until then, pull shocks weren’t famous for their reliability, but the Jekyll’s fancy dualchamber shock worked surprisingly and consistently well.