S3 CYLINDER HEAD LOW INSERT ‘KIT’ – BETA EVO HEAD 300cc 2011 to 2025

Beta head cover inserts O-ringsNew kit cylinder head insert  o-rings ready to assemble and enjoy new sensations!*All STKA/STKB kits include: cylinder head, insert and O-rings.S3 heads are made by forging process and using best alloys available, shiny finish in anodized colors.Specific compression inserts design offers the possibility to adapt engine setting to YOUR CHOICES3 Cylinder heads can hold more water flow and have stronger walls, helping with the cooling rate, this improve low and high revs power.