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Custom Assemblies > Custom Air Filter

List Price: $153.13
Your Price: $103.99

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The K&N RT-3910 Custom Air Filter converts the RK-Series Air Filter Assembly (RK-3909) with a taller K&N Air Filter and longer spacers. It is designed for Harley owners who need more air for better performance.
  • Replacement filter for RK-3909
  • Washable and reusable
  • Low restriction
  • Comes with spacers and thread locker

Product Specifications

Air Filter Height:2 in (51 mm)
Air Filter Material:Cotton Gauze
Air Filter Shape:Oval
California Restricted:Not legal for sale or use in California
Filter Material:Cotton Gauze
Height:2.25 in (57 mm)
Inlet Diameter:2.25 in (57 mm)
Length:8.813 in (224 mm)
Mounting Hardware Included:Yes
Overall Height:2.5 in (64 mm)
Package Contents:1 Air Filter
Package Quantity:1
Part Number:RT-3910
Product Box Height:3.63 in (92 mm)
Product Box Length:8.5 in (216 mm)
Product Box Width:8.5 in (216 mm)
Product Style:Unique Air Filters
Replacement Filter:E-3037
Top Material/Finish:Black Powder Coated
Weight:1.5 lb (0.7 kg)
Width:6.188 in (157 mm)