Seller notes

Fits 1999 Yamaha MM600 Mountain Max 600 T-Moly Series Piston Kit Machined smooth heads MOS 2 Coating: Draws heat through piston walls and out the bottom Reduces heat and friction, for added power and longevity Helps eliminate cold seizures, and increases durability Hard anodized crowns Hypereutectic Cast Machined smooth heads MOS 2 Coating: Draws heat through piston walls and out the bottom Reduces heat and friction, for added power and longevity Helps eliminate cold seizures, and increases dura...

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