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After reading Scheckaet's post I was curious about my cylinder size. I took a peak and am a little confused. At first I thought it was a lowercase "d", but now I am thinking it might be a poorly stamped capital "B".

Here are links to a couple pictures (sorry I can't figure out how to insert pictures).



Is this a "B" or a "d"? Thanks!

That's a B..

Thanks, I thought so.

The same mark will be (should be) on the head.

Well, it may not be EXACTLY the same. It might actually look like a 'B'.

canyncarvr wrote: Well, it may not be EXACTLY the same. It might actually look like a 'B'.

Haha, yeah. I thought I was being clever by buying a piston ahead of time, so I would have it handy for a future top end job. However I outsmarted myself by ordering a "D" piston .

If anyone is interested in buying said piston and rings before I list on ebay, please speak up .

Check it. It's likely just fine.

What's .001" anyway.........

If it's over .003" (and I'll bet'cha a Kanuck dollar), it's good.

BTW...ordered it through where? Just checking...but if it came from a dealer, Kaw doesn't give you the choice of alpha-marks. IS the piston indeed a 'D'?

Pro-flow.com was the only place I could find a "D". Had a hard time finding one, most places only had A,B and C. That should have told me something .

What was it that got 'D' on your mind to start with?

Again...don't worry 'bout it. Unless you have a fancy-shmancy bore guage, I doubt your basic feeler approach will show you less than .005"..and that's plenty!

The thing will fit a tad tighter than the 'spec'd 'B'..and will be the best top-end you ever had!!!

canyncarvr wrote: The thing will fit a tad tighter than the 'spec'd 'B'..and will be the best top-end you ever had!!!

I agree!! When it comes to clearance between pistons and cylinders being on the tighter side of acceptable clearances is good for the bike's long run performance - provided you take the time to warm-up your bike each and every time.

Thanks for the input guys! I've only got about 850 miles on this top end so it will be a while. I will post info on clearance etc. down the road. I always warm up the bike so it should be fine.

Agreed. CC, isn't it more like .0005, or even .00005? It's been talked about it on here to great extent in the past, but I'm lazy.