400ex
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#2
400ex
Well speed and power are two totally different things.. if you want more top speed that your going to have to change your sprocket sizes.. but beware the more top speed you give your bike.. the less bottom end power you will have. To achieve a higher top speed you want more teeth on your front sprocket.. if your running stock size sprockets ( I think they are 15 front and 39 rear) than you will need to increase the amount of teeth. For power without getting in the motor and boring it you are pretty much limited to aftermarket air intake and exhaust systems. I am no expert but these things I do know.. some of the others here have much more knowledge and may be able to help you out further.. but I really dont think you can get any significant power increase without getting inside your stock motor.
CGriff
CGriff
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#8
400ex
you only dropped 2 teeth on the rear, it should be able to pull ok. i personally like to gear down, i dropped a tooth on my front sprocket. this makes lifting the front end alot easier. but ian, you can get sleeves and move all the way up to a 440 kit. its probably not a bad idea to get a kit. ive seen them go for under $500.