Intake modification for 125 VAN VAN until 2006

Only for  carburettor
We will provide a ntice to show you precisely how to modify the air box cover
We will provide some new main Jet, a new carburetor valve spring and a new front sprocket.
This modification is the only one that can ensure reasonable gain compared to the price
NB adaptable muffler give a bit more torque but less gain than this kit.
Caution, the changes to the technical characteristics of a vehicle caused a lack of conformity may prohibit its use on the public highway.