[Product Information]

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• Fits: Yamaha YFB 250 Timberwolf 2WD 1992-99， YFB 250 Timberwolf 4WD 1994-00， YFM 250 Bear Tracker 1999-04， YFM 250 Bruin 2005-06， YFM 250 Big Bear 2007-09
• These include everything you need to get you operational again; they come with pistons， a top end gasket kit and bearings where needed
• Features MOS2 (Teflon/Molybdenum) Coated Skirts， a rolled-on application process provides a bond that is 10 times stronger than other spray on coatings for increased heat transfer， reduced friction， and helps eliminate cold seizures
• Hypereutectic Casting Process provides higher silicon content for reduced expansion rates and additional wear resistance; with an ability to withstand higher cylinder temperatures
• Anodized Domes increase heat resistance and durability; pistons with anodized domes are 75percent stronger than non-anodized pistons