K&N CUSTOM ASSY
- Everything For The Ride - On the Road, In the Dirt, Across the Water.
- Genuine Parts for all the major brands
- 60 days exchanges & returns
- Celebrating 50+ years of motorcycling experience
In the early 1960s two motorcycle racers Ken Johnson and Norm McDonald (K&N) developed a ground-breaking new idea for an air filter. After experimenting with numerous types of filter media they discovered that an oiled cotton design allowed the filter to not only capture contaminants very efficiently but also allowed it to be washed and reused and the original K&N High-Flow Air Filter was born. Five decades later K&N is still innovating industry-leading filtration technology. In addition to performance air filters K&N® now manufactures a variety of other protection and performance products including air intake systems oil filters & fuel filters with a reputation for exceptional quality and customer service.
The K&N RK-3930 Air Intake System was designed to get more horsepower from your Twin Cam Harley-Davidson engine. Built around the legendary K&N High-Flow Air Filter this RK Series assembly includes an innovative powder-coated billet aluminium backplate that eliminates external breathers and features a built-in dyno-tuned velocity stack. The result is a significant airflow increase to the engine without sacrificing filtration. This RK Series assembly retains a factory appearance by utilizing the stock air cleaner cover.
Features
- Increases horsepower
- Washable and reusable
- Fits inside stock cover
- Provides increased airflow
Specifications
- Estimated Horsepower Gain: 8.43 HP @ 3700 RPM
- Replacement Filter: E-3972
- Air Filter Material: Cotton Gauze
- Size: 9 Inch
- Inlet Diameter: 2.469 in (63 mm)
- Overall Height: 1.875 in (48 mm)
- Weight: 3.5 lb (1.6 kg)
- Neck Flange: 2.469 in (63 mm)
- Mounting Hardware Included: Yes
| Stocked Locations | Special Order |
|---|---|
| Stocked Locations | Special Order |
| Product Name | K&N CUSTOM ASSY |
| Price | $453.99 |
| New Arrivals | No |
| Online Exclusive | No |
| Size | OS |
| Release Season | CLR |
Orders below $99 freight - $16.95*
Orders above $99 freight - Free*
Excludes bulky shipping items. Inclusive of GST Australia wide, excludes items that contain a bulky freight charge*
Our bulky shipping rates are tiered and apply to select categories, please review below.
Bulky orders consist of items that are larger or heavier than an average order or contain more than nine items.
Information is provided on each product page if the item has a bulky freight charge.
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Tier One Categories - $29.95
- Balance & Kids E-Bike
- Other Bags
- Top Boxes & Luggage Racks
- Dirt Bike Lift Stands
- Dirt Bike Stands
- Road Bike Stands
- Front and Rear Pulleys
- Exhaust Guards
- Water Lighting
- Moto-Cred Pro Tyre Changer with Carry Bag
- Moto-Cred Ladder Ramp Foldable with 6 Steps
- Moto-Cred Dirt Bike Scissor Lift Stand
- Moto-Cred Dirt Bike Ramp - Long
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Tier Two Categories - $39.95
- Motorcycle Wheels
- Motorcycle Ramps
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Tier Three Categories - $49.95
- Bumpers, Racks, Ladders
- Bike Carrier
- Gear Bags
- Exhaust Full Systems
- Exhaust - Slip On
- Fork Springs
- Plastics for your bike
- Adveture Bike Tyres
- Dirt Bike Tyres
- Road Bike Tyres
- Tyres
- Hard Bags And Storage
- Seats
- Shock Absorbers
- Heated seats
- Fuel Tanks
- SSV Cab Kits & Doors
- Saddle bags & Panniers
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Tier Four Sur-ron Bikes - $69.95