The Cylinder Head Assembly for GY6 150cc Taobao SUNL ROKETA 170cc and 180cc models is a perfect addition to any engine modification project. Designed with a 61mm big bore cylinder piston kit, this kit offers increased power potential while maintaining compatibility with your current head. The high-quality construction ensures longevity and reliability, making it an excellent investment for both performance enthusiasts and casual riders. This kit comes complete with the necessary nuts, bolts, and gaskets, saving you time and labor. Its compact and lightweight design allows for easy installation and maintenance, making it a versatile and efficient solution for your engine upgrade. Invest in power and performance with this Cylinder Head Assembly today!