250-500cc Cylinder Wear - Run It or Replate It?

2012 WR300, about 175 hours of trialriding and enduro/scramble racing. First top end change, and there is a wear area under the exhaust port that has me conflicted. Pictures:





The wear is below the TDC ring position. You can pick it up with a fingernail or a feeler gauge, barely.

Here is the piston, just for reference, it will be replaced:



What do you guys think? Can I clean it up and run it, or does it need to be plated?

I'd clean it up first with a Scotch Bright pad and some WD-40 or CRC 556, then see how it looks. If you can't feel anything after that, I would run it.

Is it raised or scored? Personally i would run it i would use a second cut file and take that to piston skirt, new rings stick a small end bearing in and slam that together.
I am a gash b#stard tho.

I've seen some cylinders that look bad but after scotch-brite and PB Blaster penetrating oil the scuff turned out to be all metal transfer from the piston and no damage to the plating. I recommend checking it with a dial bore after you have cleaned it... the dial bore won't lie.

Thanks everyone. The cylinder is mint perfect everywhere else. I think I am going to run it. Scotchbrite cleaned it up a good bit, there is still a tiny bit of grooving/scoring in that area but you are hard pressed to feel it with your nail, you can pick it up with the edge of a feeler gauge.

I am putting a brand new piston in the bike in any case, so the old one is a paperweight. I think with no raised area, the skirt should be perfectly happy down there.

We'll see how it looks after some more hours.

I would run the old piston too but hay thats me, good call the scorings vertical and minor i knew a guy who raced tz's he would un seize the motor file ofending skirt an swich the ring upside down to run again for second race. Flipping mental bloke i miss him.
Keep new piston for new lining..

Nothing wrong with that barrel as long as you have removed all traces of transfer.

yep new slug & run it! send it out for reline next top end & matching piston

New piston and run it !!!

that not to bad at all the piston is clean below the ring rub it down with a scotch brite pad check your ring end gap [ mite mite need those b4 long why did you even take it apart?

Trying to get a hold of you for the WR IMS Tank. i can be emailed at onell.c.lee@ gmail . com

Who is you?