Wiseco crankshaft

I am 0 for 1 with their cranks.  At the time I didn't have much money to throw at the bike so I tried one. Oddly enough, it was on an rm 125.  I rebuild the engine with one and it seized very quickly (lower end bearing). I then had the OEM Suzuki crank rebuilt, redid the motor again and the the bike ran strong for a very long time.

I think their Con-Rod kits are much better than their complete crank assemblies. If your OEM crank webs are in good shape, I always advocate to rebuild with a Pro-X or other quality Rod kit. 

I had good luck with hot rods cranks on rm125.

Wiseco did have problems very early on, that was 15 years ago. They couldn't be selling them if there were still issues.

Ive just done two sx125 rebuilds, it was cheaper to get wossner complete crank vs a rod kit and rebuild. So far, so good 

Send your existing crank to CrankWorks.  They'll rebuild it to OEM specs and they do good work.  Or, if available, just buy a new OEM crank.

I had a wiseco crank in my 97 kx250 I tore down because of a chain break incident.  I was going to get an oem one for when I put it back together, but there is nothing wrong with the wiseco one I just don’t know the hours on it.

OP lives in Slovakis, shipping costs to/from CrankWorks would be more than a new crank!

@jozefb what year RM125?

Hey Jozef, I have a brand new Wiseco one for a 04-07 model and im down in Spain. Rod reference is WR10058.

Let me know if you are interested or Ican help you out with something!