Sherco/Scorpa S3 Head CoverSherco Scorpa Head Cover Reference: ST SH CO 300 In Blue or Titanium Color S3 Cylinder heads can hold more water flow and have stronger walls, helping with the cooling rate, this improve low and high revs power. Amazing Racing look! S3 heads are made by forging process and using best alloys available. Specific compression inserts design offers the possibility to adapt engine setting to your choice (sold separately) ST 923 U (Blue)