Athena 19-24 Yamaha YZ 85 85cc 47.5mm Replacement Head Internal

Athena has been constantly investing in cylinder aftermarket replacement parts for more than ten years, to improve their production and performance. All cylinders and cylinder heads are entirely engineered in Italy by Athena's R&D Department which has a strong internal know-how and cutting-edge tools to design and test each piece. Athena's cylinders and cylinder heads are recognized worldwide for their performance, durability, and reliability.