2016 Polaris 600 Switchback PRO-S, 2016 Polaris® 600 Switchback® PRO-S SMOOTHEST RIDING. MOST VERSATILE. Features may include: AXYS® ChassisThe 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 Rider Balanced PositioningOn the AXYS® chassis, the rider is moved forward to a more balanced position. The rider s hands are moved 4.5 forward, the feet are 2 forward, the knees are 4.5 forward, and the seat is 4.5 forward. In the neutral riding position, the AXYS® platform provides bite for flatter, positive cornering. PRO-XC Rear SuspensionThe completely redesigned geometry of the PRO-XC progressive-rate rear suspension is optimized for the best performance and Rider-Balanced Control. Through innovative Polaris engineering and construction, the suspension is both lighter and stronger Active Pitch Control The PRO-XC suspension delivers Active Pitch Control which controls the pitch by suspension geometry and not simply by a high spring rate. This makes the sled less sensitive to adjustment while allowing optimal weight transfer. 600 Cleanfire® EngineThis liquid-cooled Cleanfire® engine with semi-direct injection (SDI) deliver outstanding throttle response and instant acceleration. These powerful, efficient engines start easily and reliably and they calibrate automatically as the temperature and elevation change. These engines deliver impressive fuel economy in real-world riding situations, which, for Polaris riders, means aggressive, up-tempo riding, not low-rev lab conditions. Now in the AXYS® chassis, the 600 engine features new lightweight integrated mounts, electronic oil pump and bypass thermostat. Electronic Oil PumpElectronic oil pump eliminates power-robbing gear drive and provides more precise, improved oil delivery for performance and durability as well as a 35% reduction in throttle effort. Requires no adjustments. Integrated StorageStorage was designed and developed right along with the AXYS platform, so it installs securely and features seamless, integrated styling that matches the sled s design lines. Walker Evans® Needle ShocksPremium shocks with compression adjusters and remote reservoirs offer the best in tunability and fade-proof performance. Unique needle design uses hydraulic force at the end of the stroke to eliminate harsh bottoming.