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1989-1992 Polaris 500 SP
2016-2024 Honda SXS1000M5 Pioneer 1000-5
2005-2008 Arctic Cat DVX 400
2005-2010 Husqvarna SMR 450
2019-2021 Beta Xtrainer
Boyesen RAD-11K Rad Valve chemical-engine-oil-additives 1989-1992 Polaris 500 SPAn aero form reed valve that corrects the problems associated with existing reed valve designs. Maintains flow velocity through the valve and re directs the intake charge for even distribution to the intake ports. Provides quicker, sharper throttle response and more horsepower. 1 piece aluminum casting; no manifolds to trim or plastic pieces to insert. Boyesen Pro Series RAD Reeds included. Vehicle Fitment: 2004 2005 Kawasaki KX125
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