no pipe, big power?

[fitbmx358]

hey fellas,

got myself a brand new 08 leftover z400 a month or so back, and im real happy with it.
BUT
my dad hates loud quads, which really kinda sucks concidering a stock pipe wont really allow and good motor work to be done.
so i know all you clever guys out there know a secret to being quiet but fast.
so please. i welcome any ideas that involve no mods, just bolt on. i want this thing to be solid, and stay solid

[Joshbeasley]

motors are not the only thing that make you fast. suspension and tires are alot of times a better start than engine work anyways.
dirt wheels did a test and the top two pipes were quiet. check it out at ctracing.com. its under the z400 section.

[YOURADHERE]

A few of the pipes available have a quiet insert to quiet them down some. If I put the insert in my Yoshimura its not much louder then stock.