Athena Big Bore Cylinder 144cc Yamaha YZ 125 22-25

Cylinder Big Bore 144cc from manufacturer Athena for Yamaha YZ 125 22-25.

Increase the performance of your Yamaha YZ 125 with the Athena Big Bore kit, increasing the displacement to 144 cc. Precisely designed, it includes an aluminium cylinder with optimised intake and exhaust ports, reinforced coolant channels to prevent overheating, and a modular cylinder head with adjustable squish to customise the compression ratio.

The Ergal 7075 exhaust valves ensure durability and efficiency at high temperatures, while the high-quality gaskets guarantee a perfect seal. Ideal for riders seeking linear power, reliability, and consistent performance on any terrain.

Compatible models

YAMAHA

• YZ 125 2022-2025
• YZ X 125 2023-2025