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Features oversized +1mm intake and exhaust valves for improved airflow
Heavy-Duty Replacement Cam Chain: Maximize reliability and efficiency with a robust cam chain
Year: 2025 Part: BEARING Part Group: CRANKCASE
91004-MKE-A01
14-16 Yamaha YZ250F YZ 250F Kibblewhite Titanium Valves Springs Piston Cometic DR250 Features oversized +1mm intake andTake your Yamaha YZ250F engine to the next level with this premium top end rebuild kit. Everything you need for a high performance rebuild at an unbeatable value. Key Features: Kibblewhite 77mm piston for increased displacement and compression (13: 1) Cometic head gasket set for optimal sealing Black Diamond intake and exhaust valves for durability Kibblewhite valve stem seals for reliability Titanium valve springs and retainers for lightweight
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