will i need to jet it?

[ruffrydaz127]

ok im ordering the pro circut 304 silencer(already have pipe) and boyseen reeds, by putting either of these on will it cause a need to re jet the bike? btw this is a kx125 if it matters

 

[TimberPig]

Likely some minor tweeking, but only a jet size or two at worst.

 

[ruffrydaz127]

k thanks

 

[chevy383cid]

Do a plug chop,it will tell you what is needed.