Wr400 wiseco 13.5 piston

Hi, I did a search but did not find what I was looking for. Can I change the stock piston with a 13.5:1 Wiseco piston ?

part# 4650M09200

anyone ?

I put a 13.5 wiseco piston in a mates wr450 (YZ cam and pipe)and he loves it.I'v got one for my wr400(YZ timing,yoshi) ready to pop in(it does say '99yz on the box but should be ok.

Okay got the piston kit in hand. Do I have to hone or not ?? The instructions say to set the clearance as printed on the box ? Hmmm also says not to ball hone it.

Okay got the piston kit in hand. Do I have to hone or not ?? The instructions say to set the clearance as printed on the box ? Hmmm also says not to ball hone it.
If you can still see hone marks on the cylinder, I wouldn't. :bonk:

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