Cylinder and Head 58.5mm Alloy Big Bore Kit for GY6 150cc Scooters

  
Alloy cylinder and head big bore kit for the GY6 125 &150cc engine. This performance Kit is ready to bolt on without any modification. Compatible with the Honda base GY6 Engine & China Cloned GY6 152QMI, 157QMJ. (cannot install to P152QMI, nor P157QMJ Engine) Kit Includes : 59mm Aluminum Cylinder Head, 58.5mm Aluminum Cylinder Block, High Performance A12 Camshaft, Piston and Piston Rings, Wrist Pin, Wrist Pin Clips and Gaskets.

Specifications : Cylinder diameter: 58.5mm Outer Sleeve diameter: 60.2mm Bolt Hole Spacing: 54mm (center to center) Intake Valve Diameter: 28mm Exhaust Valve Diameter: 23mm Exhaust Port: 27mm. This kit is not recommended for inexperienced installers. It is highly recommend that it's install by an experienced scooter or motorcycle mechanic.

The valves may require adjusting and the timing must be properly set. Compatible with the following GY6 125/150cc Engines models KYMCO: GY6 125 and 150cc MXer GY6 125 and 150cc MXU GY6 125 and 150cc TGB GY6 125 and 150cc HONDA GY6 125 and 150cc SYM GY6 125 and 150cc VENTO GY6 125 and 150cc Phantom R4i GY6 125 and 150cc Strada RX150 Yamati GY6 125 and 150cc Verucci GY6 125 and 150cc Baccio GY6 125 and 150cc Viva GY6 125 and 150cc Matrix GY6 125 and 150cc Wuzzi GY6 125 and 150cc Lifan GY6 125 and 150cc Clones GY6 125 and 150cc. Important Parts Notice: Not all replacement or upgrade parts come with instructions. It is the customer's responsibility to have common knowledge of the installation or hire an experienced installer. We are not responsible for any damage that may be caused by any of the items we sell, whether installed by you or a professional.

In any case, we will always do our best to help you with any technical question you may have. An address change request will never be accepted.

International Buyers - Please Note.