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 Engine Coolant It features a folding hinge

It features a folding hinge design that allows being easily stored in small spaces

3 HP performance

As part of Asterisk’s ""Slim Line"" of carbon knee braces

Ideal for tight spaces

make the change and switch to Pirelli Scorpion tires

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 Engine Coolant It features a folding hingeKeep 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.