The original scooter air filter box is very well made to fit perfectly on the engine and provide enough air.
The problem is in the material of the original filter. The foam chosen to make a standard filter is not good and most of the pores of the filter are clogged and do not leak enough air for ..
They must be replaced every time the cylinder is repaired or replaced.
Aprilia SR 50 Di-Tech (-07.2003) (Aprilia двигател)Suzuki Katana 50 A (Aprilia DiTech двигател)..