Vertex KTM ‘Group’ 300 2023-on TBI Top End Rebuild kit

This Vertex top end rebuild kit will suit KTM ‘Group’ 2023-on TBI 300cc Models. Images shows the gaskets you will receive.  You will receive the correct parts for your model. It includes: Vertex piston kit in the size of your choice (A or B). Piston kit includes rings, pin, circlips and a high quality cast piston. Top end gasket kit.  Includes two gaskets to achieve the stock 0.60mm thickness base gasket, powervalve cover gaskets, copper washers and O rings… all O rings are the correct size and made from the correct material, unlike the cheaper aftermarket kits. little end bearing EZ clips free of charge  for ease of piston installation. Piston sizing: ideally you should measure your bore with a dial gauge to work out the correct piston sizing. If you cannot do this then a rough rule of thumb is use an A size under 100 hours of engine run time and use a B size over 100 hours of engine run time. Its ALWAYS better to have a bit too much clearance than not enough, so if in doubt use an A size.