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anoldsman

1998 WR400F Piston Part #

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I need to order a piston for my 1998 WR400F and the dealer shows two part numbers. These are the numbers - 5GR-11631-00-00 and 5BE-11631-02-B0. Does anyone know what the differences are?

Edited by anoldsman

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The dealer called me a while back and told me that there is an "A" and a "B" version with a slight size difference. Then proceeded to tell me that the mechanic recommended the "A" size without even knowing my cylinder dimensions. I told them that I saw a "B" stamped in the bottom of the cylinder so they ordered me a "B" piston. The clearance was good so I am crossing my fingers.

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