This is the short track 4-stroke performance sled from Polaris, and it hauls the mail. With the Dragon being the largest 2-stroke short track in the line, it was very logical to offer the 4-stroke turbo engine in a 121â€ performance model. Those looking for the fuel economy, quiet operation and lack of stink find this second-year engine refined and making more power than originally thought; instead of only 135 HP, the actual production engines for 2006 were good for 138 HP, for real. That was last year; the 2007 version gets a new EFI calibration and a host of other detail changes that bring the Turbo up to 140 HP! Youâ€™ll also experience improved cold starting and driveaway character, along with reduced plug fouling. Hey, these Polaris 4-strokes were new to all of us, and each year they get better.