Description:

Replacement for Polaris Trail Boss 250 2x4 4x4 1987-1999. Inner Diameter: Approx.3.5cm / 1.37InOuter Diameter: Approx.4.2cm / 1.65In. The perfect solution for the appropriate ratio of air and fuel mixture, provides great power and torque. It's an ideal replacement for your stock one, and will make your engine run like new. Beautifully built with smooth surface, improved air intake holes to improved airflow structure, stable performance and sensitive reaction.