Material: Aluminium Cylinder Block Size: 47.5 x 81mm Piston Size: 47.5 x 55mm Piston Pin Size: 10 x 14 x 38mm Weight: 1118g Fitment: For YZ80 YZ85 Upgrade your off-road motocross experience with this motorcycle engine cylinder kit, designed for the YZ80 and YZ85 models.The cylinder block is constructed from aluminium , offering and resistance to wear.With a cylinder diameter of 47.5mm and 85cc displacement, the kit provides a balanced increase in power and efficiency.The 8.2:1 compression ratio supports responsive engine performance suitable for motocross racing and off-road riding.The kit features a non-destructive design that allows direct replacement of components.It includes the cylinder block, piston, piston ring, and gasket set, providing a complete solution for engine rebuilding.Designed specifically for YZ80 and YZ85 models, it proper fitment and integration with the existing engine system.This cylinder kit has been tested to meet standard external certification requirements, with material heat resistance up to 105℃.Weighing 1118g, the kit maintains a lightweight profile while supporting structural integrity.The silver finish complements the appearance of your motocross bike, adding a clean and functional upgrade to the engine compartment.This kit is suitable for riders looking to restore or enhance the performance of their YZ85 or YZ80 engine.