Speed upgrade kit for your Tomos A55 LX, Arrow, Revival, Spint, ST, and Streetmate.  Bascially any Tomos A55 based newer moped will really benefit from this.  Works great to de-restrict stock setup.  Increased performance with after market exhaust.  For use with original Tomos Dellorto PHVA carburetor. 

High flow filter performance perfect for the Tomos A55 with PHVA carburetors.  

Dual stage filter has two layers of foam for protection.  Remove the red outer layer for added air filow. 

Jetting will be different when used with the 17.5mm upgrade.

Includes new Main Jet, Infuser, Idle Jet, and Hi Flow air filter.