Wiseco Piston Kit 66.40mm Yamaha YZ250/YZ250X | 804M06640 790 Duke The brute strength of our

The brute strength of our polycarbonate is enhanced with our proprietary XR Optic Hard Coating

Load more bikes and gear in your truck

full sprocket bolt set

Upgrade your dirt bike with our heavy-duty front disk guard and ride with the peace of mind that your rotor is protected from the harshest terrains

We include all the hardware you need for install and detailed instructions

Wiseco Piston Kit 66.40mm Yamaha YZ250/YZ250X | 804M06640 790 Duke The brute strength of ourPiston Kit 66. 40 mm Yamaha YZ250 YZ250X Forged from high silicon aluminum alloy for maximum strength and dependability, Wiseco offers a complete range of popular piston models and years for both trail and racing applications, Durability, longevity and increased horsepower, Innovative forging design and piston skirt provide maximum horsepower and torque, Features forged pistons, rings, wrist pins, and circlips, These high tech piston designs offer