Stock vs Stock
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#3
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Cam, piston, and porting will really liven the motor up and cost about 430 bucks if you can install it yourself. Of course you need a pipe and filter to get the most out of those mods though. Most of the people with these mods say a 400ex still has more torque but you pull on by on the top end. If you actually wanna do this stuff tell me, I know a person who does porting for only 100 bucks.
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