Hoca GY6 Ceramic Big Bore Kit, Part #169-277
Hoca 58.5mm Ceramic Big Bore Kit with Nikasil Cylinder Coating for 150cc and 125cc GY6 4-stroke engines and engine based vehicles. Easy to install! Just bolt on with no crankcase modifications needed. Bore: 58.5mm. Overall Height (cylinder): 90mm. Heat Resistant Ceramic Coating. Nikasil Interior for Reduced Friction and Low Wear.