We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
Intake System-Harley Davidson
SKU
RK-3931
K&N Air Cleaner Assemblies are designed to get more horsepower from your Harley-Davidson® motorcycle. These air cleaner assemblies replace the stock air filter and backplate with an oversized K&N Air Filter and custom aluminum backing plate. These assemblies utilizes the stock cover to maintain stock appearance.
- Designed to increase horsepower & torque
- Dyno-tuned velocity stack
- Excellent Air Filtration
- Washable and reusable lifetime air filter
- Not legal for highway use in states adopting California emission regulations
| Estimated Horsepower Gain | 6.54 HP @ 5100 RPM |
| Replacement Filter | E-3975 |
| Air Filter Color | Red |
| Air Filter Material | Cotton Gauze |
| Warranty | No-Hassle Lifetime Limited |
| Product Style | Motorcycle Intake System |
| Size | 9 Inch |
| Air Filter Shape | Unique |
| Air Filter Height | 2.125 in (54 mm) |
| Air Filter Outlet Shape | Not Flanged |
| CARB EO Number | D-269-59 |
| Street Legal In All US States | Legal for use in all 50 states. |
| TUV Approved (Europe) | No |
| Inlet Diameter | 2.406 in (61 mm) |
| Overall Height | 2.5 in (64 mm) |
| Top Style | Metal |
| Top Material | Aluminum |
| Clamps Included | No Clamps Included |
| Clamp Style | No Clamps Required |
| Clamp Material | No Clamps Required |
| Weight | 3.1 lb (1.4 kg) |
| Product Box Height | 4.88 in (124 mm) |
| Product Box Length | 11.75 in (298 mm) |
| Product Box Width | 9.5 in (241 mm) |
| Couplers Included | None |
| Mounting Hardware Included | Yes |
| Neck Flange | 2.406 in (61 mm) |
| Style | Teardrop |
No cross references found for this part
Resources:
Installation PDF
Installation Instruction Sheet Air Filter Test Data Dyno Chart - 2008 Harley Davidson Dyna Street Bob 6.54HP Increase
Recommended Products
Search By Vehicle
Search By Dimension
The item you added to cart DOES NOT FIT your
This item fits your
