If I get this item Do I need fp3?

If you have a good free flow exhaust and this k&n setup I recommend having one so you don't risk leaning out your bike. Otherwise if all you do is change the filter and housing then, no.

Does this affect riding leg position?

Yes and no. My leg rests up against it while I ride vs the stock one. But you don’t even notice it. That’s on a 05 Electra glide.

Is there a rain sock for it?

No K&N does not make a rain sock for this intake.

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K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3950

K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3950

Product ID: 40636895

Details

Brand
K&N
Fit Type
Vehicle Fit
Number of Items
1
OEM Part Number
RK-3950
Product Grade
Performance

🎯Vehicle-specific precision fit

🔥Guaranteed horsepower & torque boost

⚙️Dyno-tested for real-world power gains

€ 318.42

Duties & taxes included

In stock

Sold byAmazon IrelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Power your ride with precision-engineered airflow!

UNLEASH RAW POWER - Experience a guaranteed increase in horsepower and torque with a less restrictive airflow path.
PROVEN PERFORMANCE - Dyno-tested on wheel-based dynamometers for trusted, measurable gains.
LIFETIME CONFIDENCE - No-hassle lifetime limited warranty that won’t void your factory vehicle warranty.
TOWING MADE TOUGHER - Improved throttle response and uphill performance for confident towing and daily driving.
ENGINE GROWL AMPLIFIED - Enhanced engine sound that growls on acceleration, delivering an immersive ride.

The K&N Cold Air Intake System RK-3950 is a premium, vehicle-specific upgrade designed for select 2013-2015 Harley Davidson Softail models. Engineered and dyno-tested in the USA, it delivers a guaranteed boost in horsepower and torque by optimizing airflow with a high-flow washable cotton filter and custom heat shield. Installation takes about 60 minutes, enhancing engine sound and towing performance while backed by a lifetime limited warranty that preserves your factory coverage.

Specifications

ASIN	B06WLHPTKB
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#1,153,249 in Automotive ( See Top 100 in Automotive ) #1,161 in Automotive Replacement Air Intake Filters
Brand	K&N
Brand Name	K&N
Customer Reviews	4.6 out of 5 stars 49 Reviews
Fit Type	Vehicle Specific Fit
Global Trade Identification Number	00024844364647
Included Components	Air Filter^Back Plate^Air Scoop^Air Scoop Base^Breather Bolt (2)^Literature Pack^Parts Kit
Item Highlight	Fits Select 2013-2015 HARLEY DAVIDSON: FLSTN Softail Deluxe/FLSTC Herritage Softail Classic (See Product Description)
Item Type Name	Intake System (Harley Davidson)
Item Weight	4.7 pounds
Manufacturer	K&N Engineering
Manufacturer Part Number	RK-3950
Manufacturer Warranty Description	3 Months
Model Number	RK-3950
Number of Items	1
OEM Equivalent Part Number	RK-3950
OEM Part Number	RK-3950
Product Grade	Performance Part
UPC	024844364647
Unit Count	1 Count

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