Athena P400485100032 290cc Big Bore Cylinder Kit (83mm Bore) - High-Performance Forged Piston Upgrade, Converts 250cc to 290cc, Compatible with Yamaha WR250R & WR250X (2008-2021) Tire Tubes Independently tested on models like
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Description
Athena P400485100032 290cc Big Bore Cylinder Kit (83mm Bore) High Performance Forged Piston Upgrade, Converts 250cc to 290cc, Compatible with Yamaha WR250R & WR250X (2008 2021) Tire Tubes Independently tested on models like Independently tested on models like the KTM 450SX at 16°C using the Superflow 400 Grizzly 125(05 14)