S3 Head Cover for KTM EXC 2017 and newer. This is the head for the non-fuel injected models (non-TPI). It uses the best alloys available on the market to obtain a better power output. The advantage of these heads is that they can hold more water and have thicker walls which helps with the cooling rate improving low revs power.
STARS HEAD eliminate the hot spots typically found on cast heads. Fits S3 head inserts which allow you to adjust the compression of your engine.