Alright well i've had my 2013 KLX250s for 5 months now and put more than 10,000 KM on it and I love it. But now, I need more power. Just a few things I got for my bike that are coming in soon, that I have a few questions before I screw it up.

I got a 13t front sprocket and 47t rear sprocket, how big would the chain need to be to fit this? I need to change the chain, so it would be great to know how much I need.

I got FMF Powercore 4 + Megabomb in my garage, I'm not too sure how to jet this, because well I can't find the stock jetting settings, and to what to jet it at. (I live in Northern Ontario, not sure of the sea level) also adding to that, I want to remove the Airbox lid, if i'm right I need to jet for that too, HOW. I'm completly lost in the jetting world.

I got a graphics kit for it, any suggestions how to remove those stickers without scratching it up? I read online to use a heat gun then to peel them off, but just wondering if you guys have any other tips and tricks.

Thanks ! This is the start to my bike.

P.S. : How many KM is this bike suppose to last? I take care of it like a princess.. My family members tell me it has maybe 5000 KM left on it but I doubt that .. I change the oil every 1000 KM low or not, always use good gas, clean the filter.. She's my baby

 

I used a 108 link for 13/47.

For jetting check out Illking's spread sheet.

My stickers came right off after sitting in the sun for awhile.

 

Buy a Dynojet kit. Easiest way to do it. They come with instructions.
The bike will last a long time, just depends on how you abuse it.

 

The stickers will peel right off. They may leave a adhesive residue behind but that can be wiped off with rubbing alcohol. You'll want to make sure there is no old adhesive or oil on the parts your putting the new graphics onto.

As for the rejetting, you shouldn't need to rejet if all your doing is adding a header and slip-on. However, if your going to remove the lid then you will. You can refer to Illking's spreadsheet for settings based on your elevation and mods.

 

I know when I removed my airbox lid the vibration and intake noise was too much for me, I settled with just taking the snorkel out and calling it good. I think if you add a slip on and header then you do need to rejet as more airflow requires more fuel. Buy a dynojet 2152 kit and the instructions are simple enough, some people buy the klx300 jet kit for a different needle I believe. Getting the carb out is kinda tricky though, it requires removing the tank and seat which isnt even the hard part, fittting the carb through the frame was what i found the hardest.