Vertex 2-Stroke Piston

Still going strong almost 3 weeks later

Like that Vertex offers the "B" Piston for the YZ 250. Nice piece, well made, & I replace every 30 hours.

This is my second time using this kit for my 2012 KTM 150 XC. Beware that the wrist pin for the KTM 150 XC kit are real tight. You will need to use a light coating of grease to get the pin in the piston. Other than that, it's a nice kit. I got 60 hours on my first kit.

Able to get a solid 25 hours of race plus trail riding out of this Piston. found no wear after 25 hours.

bought it for 98 yz250 got my heat cycles in then rode down at the dunes blew up right when I got on the pipe I assume power valve hit and now cylinder is screwed but piston installed good had a nice coating and ring gap was spot on

Great piston, we always run vertex, never had any issues in any of our bikes.

They’re the best pistons I ever owned. It came out looking new after 40 hours of riding and wasn’t even scratched up at all. Thumbs up

Bought this for my son’s “mini roost” 2006 KTM 65 sx. I bought the top end kit with the gaskets and the rod needle bearing. His bike was spooging semi-bad since we bought it used and recently became harder to start. It wouldn’t start without the throttle cracked open. It also lost power on top of each gear. This was my first top end replacement I’ve done myself. Everything fit perfectly. The clips were the hardest part. It took about 2 hours total tearing down and put back, but if I did it again I could cut that time in half. I was just being cautious. Anyway it cranked first kick with no throttle afterwards. Exhaust is clean with hardly any spooge at all. She’s back to picking the front tire off the ground through 4th gear with a 200 lb man on the seat!!!! BRAAAAAAAAAP!!!

These pistons are just like the factory for KTM. I've been using them for the past 6 years whether it's for a 2 stroke or a 4 stroke.

Seems to be working well. No issues so far