would i have to rejet?

[ThorRacing37]

if i get a white pros silncer would i have to re jet the carb?

[trx400exxracer]

it depends on where you live like how far above sea level are you more than likely you will have to I would also go with a UNI airfilter you will notice the power with this pipe and proper jetting

[400EX QUADER]

put in like a 155 main jet and 42 pilot jet... thats just an estimate.:ermm:

[trx400exxracer]

like I said you should find out the proper jetting for your quad you should get in touch with someone that lives in NJ cause I live in Georgia and I run a 170 main with my slip-on