A Full-Sized ATV And Best Value In Its Class. Trail Boss is consistently the best selling automatic 2-wheel drive ATV. Unlike other machines in its class, it’s a full-size, adult ATV. For 2003, it gets a new Polaris 330 engine—up to 100 cc’s larger than competitive machines—plus a new front and rear racks and bumper. Trail Boss is also the only ATV in its class with long-travel suspensions and easy single-lever braking. • Trail Boss is a full sized, easy and fun to ride, with reliable performance and an affordable price tag. • Trail Boss features the world's best-selling automatic transmission (PVT) and smooth-riding, long-travel front and rear suspension.