What’s one to do to a Polaris 550 Fan if you want to juice it up? Not many (if any) performance shops offer go-fast...

What’s one to do to a Polaris 550 Fan if you want to juice it up? Not many (if any) performance shops offer go-fast parts for the fan-cooled models, as most owners of these machines ride them bone-stock. Most, but not all.
SnowTech enthusiast Tim Roelfsema of Falmouth, Michigan tipped us off to a discovery he had made, and has implemented on a number of Polaris 550 fans. He found the OE part number for the 550 silencer was the same as XC models, which Starting Line Products offered a silencer for. He installs the SLP silencer for EDGE XC models, along with one of the SLP 4.5” Flow-Rite intake filters in the dash (replacing the tachometer blanking plate). The combination of the silencer and the intake mod let the fan 550 breathe easier, to the point that the main jets need to be increased two sizes!
According to Roelfsmea, “It hauls ass! Up to 70 mph it is as good as any 500 liquid, and really makes a difference. It pulls so hard now, anyone looking to make a 550 haul should try this.” Thanks, Tim!

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