K&N air filtre three cylinders Legend 900/Thunderbird 900

K&N cotton air filter preoiled and ready for installation in the original airbox. It can be cleaned with special cleaning kit (not included) so you can reuse it several times. Provides maximum airflow and engine protection. For best performance we recommend installation increased main jets or alternatively the Dynojet kit. The only replacement of the filter does not involve any increase in power but only a greater airflow that must be balanced with an adequate enrichment of the fuel mixture. For the same reason we suggest to fit a pair of racing exhausts that allow adequate capacity for the expulsion of exhaust gases, a consequence of the increased volumetric efficiency.