[sprintfan511]

I have a 2007 400 ex . I want to put new exhaust ,carb jets , air filter on . I want to get the most power I can without getting inside the engine . What products would you choose ? I need all the help I can get . Thank you.

 

[mud99]

There is a few exhaust kits that come with the jets for the upgrade. K&N and UNI makes a great air filter. How much are you wanting to spend? Check out our sponcer and see what they have to offer KB Motorsports Welcome to the forums.

 

[sprintfan511]

I was looking at spending around 500 to 600 dollars . I was also thinking about an aftermarket header pipe but don't know if the power gain is worth the extra 200 bucks .Thanks for any and all help .

 

[mud99]

I would go with the whole kit header and slip on there is a difference. for 5 or 600 you should be able to get a great exhaust system. FMF, Curtis sparks make a great exhaust.

 

[tomgodd]

Agree^%^^^^^^^^^^^^^^^

 

[sprintfan511]

Thanks for the help . It's nice to get someone else's knowledge and opinions on things .

 

[tomgodd]

No problem Sir!