Polisport Radiator Louvers - Blue Panels for Yamaha YZ 450FX/WR 450F (2007-2018) YZ 250FX/WR 250F (2015-2019) YZ 450F (2014-2017) YZ 250F (2014-2018) - OEM Fit, Durable Plastic, Enhanced Airflow MASSFX The Milwaukee built brushless motor

The Milwaukee built brushless motor

It installs directly into solid concrete using 5/8” cement anchor bolts and includes masonry bits for easy setup

making it ideal for mud

The 120 TPI ProWALL casing enhances lightweight performance while offering reinforced sidewall protection for improved puncture resistance and stability at lower pressures

this tire delivers like no other

Polisport Radiator Louvers - Blue Panels for Yamaha YZ 450FX/WR 450F (2007-2018) YZ 250FX/WR 250F (2015-2019) YZ 450F (2014-2017) YZ 250F (2014-2018) - OEM Fit, Durable Plastic, Enhanced Airflow MASSFX The Milwaukee built brushless motorKeep your engine cool and protected with Polisport Radiator Louvers, engineered for optimal airflow and rugged off road durability. Made from Durable Gloss Polypropylene (DGP), these injection molded panels deliver a precise OEM style fit while enhancing the radiators cooling efficiency. Whether you're replacing stock louvers or upgrading for performance, Polisport offers a reliable solution trusted by riders worldwide.