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3D contoured foam
heavy-duty contacts and high-conductivity brass terminals
High altitude riders gain 6-7hp in the mid range
Speedflight shoes have an advanced and lightweight main chassis
slip-on muffler
PRO CIRCUIT Engine Plug Kit - Yamaha YZ 450F/250F 2010-2020 PC4009-0019 Derby Cover 3D contoured foamContain the required number of ignition cover and oil filler plugs Machined from aircraft grade aluminum Polished to a mirror finish, then anodized for a one of a kind look 2014 2020 Yamaha YZ 250 F 2010 2020 Yamaha YZ 450 F Fitment Disclosure This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and or website(s) for specific fitment and
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