My KTM 530 EXC Piston Replacement

I decided to have a little fun with my GoPro while replacing the piston in my 2009 KTM 530 EXC-R. It took about 3 hours overall. The piston was way past its life and was about 0.5mm out of its service limit.

[@ov1d1u92]

Who can help me? please, I don't know how to set the rings gap on the piston, in the manual I do not understand...

[@christianrocker458]

Amazing.

[@youtubechangedmyname]

Surprised you didnt do the timing chain ....mine was beat when I did my 530's top end. I used a vertex piston also along with a new cylinder to be safe. I had about 150 hrs

[@ronik1974]

Hi my 2008 KTM530 is now need new Piston , its on 541hr engine , draining a lot of oil , and smoke .. i want to buy also new timing chain , what size of cylinder and Piston did you buy ? is it vertex kit?

[@flupp6637]

@@ronik1974 If you replace both cylinder and piston, you do not need to worry about the size. Just buy a kit with piston an cylinder (New cylinder and piston are mostly size "A"). The measurements will be correct.

[@iztokp]

Nice job. I own a KTM 530 build in 2010. How many hours did the replaced piston run? Did you measure the cylinder bore too?

[@xenonhue]

Late reply, i know, Sorry. Its still in it with around 200 hours, no smoke, and full compression.

[@RadioReprised]

How is the headlight on without the engine running? Is it because it has a Trail Tech ignition?

[@xenonhue]

I converted it to a DC system.

[@ronik1974]

Why you edited it with so fast motion? What the point?

[@oldfellafpv7770]

hi there can i ask how many hours were on the bike when you changed the piston

[@xenonhue]

I don't actually know. I bought the bike a year before this. It was beat up but ran pretty good. I decided to replace it because it was burning through a lot of oil. I put around 100 hours on it myself before replacing the piston with a Vertex one. That piston is still in the bike and running strong. I currently have about 200 hours on it. It doesn't burn any oil at all. i don't use the Motorex oil, I run Valvoline VR1 Racing 20W-50.

[@MRR7]

@@xenonhue interesting, mineral oil keeping up?

[@cristianmagnani4731]

what brand is the speedometer? very beautiful

[@xenonhue]

Its a Trail Tech Vapor

[@roycohen8741]

why it edited so fast ?

[@GeoCog]

What size piston did you use?

[@MRR7]

B, It's written on it