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.
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.
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