Basic Jet Kit, Foam Air Filter & Black Performance-Series Slip On Exhaust Euro-Black for Yamaha Grizzly 660 2002-2008Kit Includes: 1 HMF Performance-Series Slip On Exhaust Black, 1 HMF Basic Jet Kit, 1 Uni Filter Foam Air FilterHMF Performance-Series Slip On Exhaust BlackColor: BlackShape: RoundMount: SideEnd Cap: Euro-BlackHMF Basic Jet KitAll HMF exhaust jetting has been predetermined with proper jetting specs to ensure the ultimate performance from your HMF product and should be used as a reference only. The proper jetting will ensure the full performance potential from your HMF aftermarket high performance pipe and is necessary on all machines.Uni Filter Foam Air FilterUni Foam Air Filters use polyurethane foam as the filtration media because of it's superior dirt capturing abilities. The principle of how foam air filters work is simple: 'Open Cell' Polyurethane Foam is wetted with specially developed filter oil. The 'sticky' filter oil is suspended in the path of the dirty air making it impossible for dirt to pass through the depth of the filter.
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