Polisport Radiator Mesh Yamaha YZ450F ('10-'13)Now, Polisport also offers special mesh for the radiator louvers, which will add increased protection for ridding in muddy or sandy terrains. Polisports mesh were developed exclusively for Polisports radiator louvers, with a design that will fit them perfectly. The mesh is easily clipped on and off the louvers without need to disassemble the radiator scoops. Perfect protection for muddy and sandy terrain Easily clipped and unclipped on the radiator