KDU CYLINDER BIG BORE UPGRADE PSF VENTO SAURON DAZON 125cc ENGINE

Often confused with the GY6 the KDU is the Honda Air cooled engine released in Asian prior to the GY6A that made it to the US and Europe. Many dealers think all GY6 units are the same and they are not. The KDU is found in Vento, Dazon, Powersports Factory and several private label brands that are now defunct in the USA. The Sauron 125cc was the most popular and the Sauron 150. The KDU Cylinder comes in 50mm, 52mm, 54mm, and 55mm. The MRP Big Bore kit will upgrade any 50mm all the way to 55.5mm without the need to bore out the case. So if you have an old pre-GY6 GoKart Buggy using the KDU then this is an upgrade from your 52mm buggy.