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i have an 04 400ex and was told when i bought it that it has a 440 kit on it but the cylinder says 397cc on the outside. i dont know what to look for on the piston. but i cant measure piston- to- bore i dont have the tool.
Here is a 440 kit, note the cylinder/jug change, 400EX Big Bore Kit | eBayi have an 04 400ex and was told when i bought it that it has a 440 kit on it but the cylinder says 397cc on the outside. i dont know what to look for on the piston. but i cant measure piston- to- bore i dont have the tool.