well tommorow im gettin a 400ex and its comin with a pro circuit t-4 pipe im wondering if that is a good pipe are should i get a different one. also when i get an airfilter should i get k & n are somethin else and when i get the filter what are the jet settings im gonna need

 

Congradulations on your new wheeler!! The pro circuit exhaust is a great wxhaust. My friend just ordered one after I posted a topic on some pipes and it was the most suggested. I would keep it and go with a K&N filter, my brother has one on his 400ex and I have one on my recon with no problems and a little bit more power.