Twin Air Foam Air Filter | 158264 dirt The 520RTG1 is the perfect

The 520RTG1 is the perfect choice for racing / performance oriented applications with 520 chain size

2015 - KFX 50

2001-2007 RM125/250

2021 - FE 501S

“200CAM” – starts out 10% smaller than stock and “400CAM” – starts out 20% smaller than stock

Twin Air Foam Air Filter | 158264 dirt The 520RTG1 is the perfectThick, flat foam, greaseless sealing ring ensures maximum contact with your airbox while acting as a breathable gasket for increased air passage Coarse open pore foam catches airborn dirt, grime, and sand Fine open pore inner foam acts as second filter to trap the smallest particles while ensuring maximum air passage Adhesive withstands repeated cleaning Smaller than stock to increase air space and circulation around filter