The 4-stroke, air-cooled engine provides the Trail Boss 325 with power for light work and trail riding. 

The engine has a fan-assisted 3-stage oil cooler that helps it deliver consistent power, even when towing a load or covering demanding trails. It also has electric start. 

The power is managed by the dual-sensing automatic PVT (Polaris Variable Transmission), which responds to both engine RPM and vehicle torque load. The transmission reacts to changes in off-road conditions quickly and efficiently, and delivers the proper power to the wheels at all times.

 The E-Z Shift lever lets a rider conveniently choose between forward, neutral, and reverse.

 Further enhancing the delivery of power to the rear wheels is the Concentric Drive System. In this advanced Polaris design, the swing arm’s pivot point is aligned with the center of the drive sprocket. As a result, the rear suspension is not affected by engine torque, and the Trail Boss 325 efficiently puts more of its power to the ground in the form of outstanding traction. This design results in a consistent chain tension at all times, reducing chain wear and decreasing considerably the need for chain adjustment or maintenance. 

The long-travel MacPherson strut front suspension has 6.7 inches of suspension travel. The tight-turning Trail Boss 325 has a turning radius of 60 inches. A gas-charged shock gives the long­ travel rear suspension 9 inches of travel. 

As with all Polaris ATVs, the Trail Boss 325 has single-lever, all-wheel hydraulic disc brakes and an auxiliary hydraulic foot brake. It also has full floorboards, a rear cargo rack, tow hitch, brake light, adjustable handlebars, a tool kit and a 3.7 gallon fuel tank