. I was going that way to start with myself. Once Sam said the piston was made by the same company that makes pistons for Kia I though right lets give it ago. For the price of Sams kit has with the barrel piston etc. I have purchased Sams kit, powertronic and a full delvic exhaust and some of the cost of having it all fitted by the bike shop. This way it also means I do not have to worry about making a mistake when fitting all this and any damage to the equipment in the process. More than happy to be the New Zealand test bed.