Item fits: Yamaha YZ250 03~19 Item includes: Crankshaft x 1 (Replace OE P/N: 5UP-11400-10-00) Piston w/ RIK Rings x 1 set (Replace OE P/N: 1P8-11631-00-A0) Complete Top & Bottom End Engine Gasket x 1 Feature: 2. World Class Needle Roller Bearing 4. Improved oil canal design for bettering lubrication 6. Direct Replacement Parts 7. A390 aluminum alloy 8. Hard Anodize on crown and side for ignition and combustion resistance 9. MoS2 Skirt coating reduces friction and improves wear 10. RIK Piston Ring: the most well-known manufacturer in the industry 11. Cast piston has super-high silicone content for additional strength
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