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Effect of 01 YZ426 cams in a 99 WR400?

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Providing that they fit, the power would be more abrupt, your bike would get up and go a bit quicker. I'm assuming you have an 01 YZ cam available to you but if you were to go out and buy a cam(s) new I would suggest an 03 or newer since they have the auto decompression feature which makes things a whole lot better...

Dan

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How will the power band be changed by putting a set of stock YZ 426 cams from an 01 into a 99 WR400? Thanks.

You will get the same effect by rotating your current WR exhaust cam 1 tooth. The intake cams are the same. Don't waste your money.

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