250-500cc V-force 3 Quickly worn out.

Hi you guys, i'm new on this forum.

I run a WR300 2010, i just did a full rebuild on it. (new bigend, piston, powervalve, mainbearings and crank seals and new read petals).
After 15 hrs it started to run funny and was a bitch to start. it took me a lot of time to realize that my reed valve was failing.
There's alsmost one side completely missing. Others are cracked. I can see a lot of cracks in the top layer of the reed petal.

My questions are, is this normal wear? If not what would cause this?

(i also attached some microscope photo's of the petals)

Wow thats strange. My original reeds were almost perfect at 100 hours when i put my first piston in. Maybe you got a defective pair? Did it ever backfire or ingest any water???

I don't know if the V-Force 3's were the ones affected but the original, O.E.M. part numbered V-Force reeds were really thin and didn't last long(I wish I could remember if it was the '2" or "3" )...the replacement reeds 'from' V-Force are thicker. I have them on my WR125 and are still in great shape with almost 120 hours..

It's not normal wear. I suggest you send the pics to V-Force and see what they have to say. I had this happen once on some new Boysen reeds and they upgraded them to better reeds for free. I find most performance parts companies to be very helpful if you ask nicely.

The husky dealer spoke to the vforce guys on my be half. I'm getting a complete new assembly. With the petals for free. Once I have it in my workshop I'll post a picture of the difference. Apparently the design of the v force 3 has changed due to lifetime issues. For some ktm model they last as short as 3 hrs? We'll see how the new one holds up.

wow, those are some truly laughable lifespans

hi guys, i have received the new reed-assembly. Strangly i got a honda CR250 part. which was easy to adapt. i could'nt see any difference between the cages? the left side is the "worn" cage, the right side is the new one. After install the bike is running strong again.