Need for Speed offer a number of products in this range from Green, K&N, ITG, Jetex, Pipercross, E-Tech and Sparco.  Applications vary between manufacturers but Need for Speed have tried to cover most vehicle manufacturers from Alfa Romeo to Volkswagen using these suppliers.
 

INDUCTION KITS
Aftermarket Induction kits are designed to increase air flow into the induction system, which will increase the engines efficiency, which in turn will increase torque, mid-range and horsepower. With listings from Green, K&N, ITG, Jetex, Pipercross and Sparco most vehicle applications are covered in the range offered by Need for Speed.
 
The kits come ready to fit, with full instructions.  Performance increases vary from vehicle to vehicle but is estimated by the manufacturers to be between 5 and 10%. All cones fitted to the kits are re-usable and can be cleaned and re-used.
 

REPLACEMENT FILTERS
Aftermarket performance filters are designed to replace the standard filter/ element. They are available from Green, K&N, ITG, Jetex, Pipercross and Sparco. They are designed to give increased airflow over the standard filter and therefore increase the engines performance, torque and power. They are all designed to be re-usable and can be cleaned, re-oiled and re-used.
 

BOLT-ON FILTERS
Aftermarket bolt-on performance filters are available from Green, K&N, ITG, and Pipercross. These performance-enhancing filters are designed to replace the standard filter housing and increase airflow.  Motorsport filters are available for most applications including fast road, race, rally, autograss, rally cross and stock car racing.