SMOOTHEST RIDING. MOST VERSATILE.The 600 Switchback® PRO-S is for crossover riders who want the ultimate in cornering and handling, and a sled that virtually eliminates stutter bumps. Featuring the Rider-Balanced AXYS® Chassis, 600 Cleanfire® Engine, and multiple comfort features, this snowmobile delivers Rider-Balanced™ Control, Unrivaled Acceleration, and Rider-Centric Comfort.Features may include: AXYS® Chassis The AXYS® chassis features 93% new parts, including a carbon-fiber overstructure and aluminum handlebars on SnowCheck Select or Limited Edition models and an aluminum overstructure on standard models. The chassis structure and design makes it possible to change the rider positioning, centralize vehicle mass, redesign the rear suspension, add more power, remove weight, and evolve the rider’s riding experience. In short, it is the key to delivering rider-balanced control, unrivaled acceleration, and rider-centric comfort.