KTM 250 SX pipe problems

Are you bolting it directly to the frame? The 2 strokes ive had in the past had rubber dampers between the frame and pipe. I could see bolting directly to the frame being too violent for the pipe

Put the FMF pipe on with the stock silencer.
Or for a heavier gauge option run the PC 2 pipe for the 300,

I use rubber dampers, although there's still a lot of stress on the pipe. I had one pipe that was a perfect fit, but that one got destroyed in a crash sadly. I bought two of them and the other one is a totally different fit which baffles my mind.

I'll try to see if a FMF/stock combo will pass decibel regulations.

Had a 13 250SX that the stock pipe got small cracks around the spring mounts. I got a PC pipe and never had a problem.

Before the 13 the last 250SX’s I had were 00 and 01....both got similar small cracks on the header area of the oem plated pipe. I think the stock KTM pipes are just crappy. I don’t know about the newer ones but the older bikes used 3 springs and MXA used to say to take one of them off to help with the problem.

NVA57 wrote:

This weekend, I've cracked my 4th pipe already on my 250 SX. Its a 2013 (2013-2016 model year). I either crack them right at the bend where they mount to the frame or just blow a hole in it. Both happened twice, so four times total. I tried numerous of pipes including the stock pipe, two KTM Powerparts pipes and a HGS pipe.

Are there others here that have this issue? If not, what pipe do you use? I tried FMF but it's kinda "banned" here due to it making too much noise, so only rode with that once.

I'm kinda tired of blowing my money on pipes.

get a piet pipe..

The stock pipes are made of thin crap. Mine cracked right away on my 2013, I got a Pro Circuit pipe and silencer and that was fine, never cracked.

Possibly something is wrong with fitment causing extra stress or a combo of that and a lean condition creating extra heat as well? Good luck