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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
XR400 upgrade advice
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[QUOTE="Kawidude, post: 757456, member: 18582"] I never changed the gearing on my '97 XR400, but I did put a White Brothers R4 pipe on it. The pipe was one of the best mods I did to the bike. It definitely added a little more "pop" in the bottom end. It was quite a bit louder than stock, so I put the special R4 quiet core in it and was able to pass the 96db sound test at my riding area. I recently sold the pipe to my brother-in-law and he loves it too. I didn't do anything differently with the head pipe though. It was stock. A lot of guys are putting the Mikuni pumper carbs on the 400 with great results as well. [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
XR400 upgrade advice
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