S3 HEAD INSERT | SHERCO, SCORPA 125 2014+

S3 Head Insert for Sherco and Scorpa 125cc motorcycles. For use with the S3 Star Head for the 125. These models fit 2014 Sherco's and 2015 Scorpa's and up. This is the Very High compression insert. Should be used only in high altitude situations to give your 125 the compression it needs. Will cause engine damage if not used correctly.