Motorcycle Air Cylinder Block 39.5mm Cylinder For 50CC SX 50 SX50 SR Adventurer 2002-2008 Dirt Bike Engine Parts Material: Aluminum Color: Black Weight: 1930g Quantity: 1 Piece Model Number: 2 Stroke 50cc Fitment: Specifically designed for SX50 2002-2008 This motorcycle air cylinder block is constructed from aluminum, providing for off-road use.The 50cc displacement and 39.5mm bore size support engine performance in compatible dirt bike models.With a weight of 1930g, the cylinder block offers a solid build while the black finish contributes to a clean engine appearance.Designed for straightforward installation, this part fits SX50 models from 2002 to 2008 and is suitable for use with SR Adventurer and other compatible 50cc engines.The big bore design helps improve engine stability and power output.This cylinder block serves as a functional replacement component for maintaining or upgrading dirt bike engine performance.