BOYESEN SuperCooler Water Pump Cover + Impeller Kit - Blue RFX Sport series products are

RFX Sport series products are designed and manufactured at a price suitable for all racing budgets

At peak RPM

95mm Standard Compression Yamaha YZ250F

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BOYESEN SuperCooler Water Pump Cover + Impeller Kit - Blue RFX Sport series products areBoyesen SuperCooler Water Pump Cover and Impeller Kits are specifically designed to enhance the performance of your Bike's engine cooling system. These high flow, hydrodynamic water pump kits have been tested and designed to flow more coolant. By increasing the flow, the engine will run cooler at a more constant temperature. Kit content: Impeller kit Screw kit