Best quiet performance engine??

[pkb324]

I was just wonderin if any one knew what the best way to make good power for racing while still being quiet enough to be trail legal..

[911]

i use the fmf titanium 4 slip on (fim) version, this comes with an insert wich comes out with 3 allen bolts. when i'm racing i take it out. i also bought the quiet core insert for 25$ wich is a smaller insert and i unpluged the snorkl and jetted the main up. you will have to try dif jets to get it right. big boost in power:D good luck

[callen74]

I 've got the White Bros. E2 pipe on my 450 and it definitely helped out the power while remaining quiet. I have the HRC kit and the E2 is about the same noise level as the stock silencer with the HRC endcap. And if you want more power just take out the quiet insert with 1 Allen bolt and it's just like any normal pipe. It looks real good on the quad, too.

[Woody_YFZ]

The DRD pipe. It is 96Db and still gives awesome power.