This is a vintage 1972 Penton/KTM 175 motorcycle cylinder with a 63.25 bore and 7 fins. Made of aluminum, it is compatible with KTM and Penton off-road motorcycles from the years 1972 to 1975. Manufactured in Austria, this black cylinder is a rare find for restorers of vintage motorcycle engines, particularly those interested in the Penton Jackpiner model. With its high-quality construction and compatibility with the KTM motorcycle brands and years, this cylinder offers a unique and authentic piece of motorcycle history for enthusiasts and restoration projects.