If you own a KTM 250SX that you’d like to get more power out of it, you should seriously consider turning it into a 300SX with the SXS 300 kit. This SXS 300 kit will add more horsepower than any mod you could ever make to your stock 250cc engine. This kit contains all the parts required for converting your 250SX to a 300SX for the MX3 class : a new cylinder, head, piston, rings, wrist pin, gaskets, clips, o-rings, power-valve parts and black box. No need for the jets to be changed on the 250 SX carburator.
**Suitable for 250 SX from 2007 to 2013**
- Only items that have been purchased directly from us.
- Please ensure that the item you are returning is repackaged with all elements.