K&N RK-3952 Street Metal Air Intake System for 2008-2017 Harley-Davidson T

Regular price: $314.99
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Product Specification:

SKU:KNNRK-3952

MPN: RK-3952

UPC: 024844367013

Weight: 4.3 lb

Inventory: 4

Type: Cold Air Intakes

Vehicle Fitment

2008-2017 Harley-Davidson Touring, Softail, Dyna and other compatible models (see manufacturer application list)

Fitment Notes

Replaces the stock air cleaner - direct bolt-on install with included hardware
Includes internal breathers; external OE breathers are not required

Features

Oversized high-flow K&N cotton-gauze air filter for improved airflow and engine breathing
Cast aluminum high-volume intake housing with matte-black finish and sanded fins for aggressive styling
Integrated internal velocity stack for optimized air delivery
Washable, reusable, pre-oiled filter - long service intervals and low maintenance
Improved throttle response, engine sound, and potential horsepower gain (≈ 7.12 HP @ 4668 RPM)
Includes all necessary mounting hardware for installation - typically under 90 minutes
Low-restriction design reduces intake resistance compared to stock air cleaner
Street-legal in most states (check local emission regulations; not CARB-legal in all jurisdictions)

Specifications

Housing Material: Cast aluminum, matte black finish
Air Filter Material: Cotton gauze
Air Filter Height: 2.39 in (61 mm)
Overall Intake Assembly Height: 4.25 in (108 mm)
Replacement Filter: E-3988
Estimated Power Gain: ~7.12 HP @ 4668 RPM
Filter Colour: Red
Includes mounting hardware, O-rings, velocity stack rubber piece, breather bolts, back-plate spacers, and fasteners
Weight: ~4.1 lb (1.9 kg)

Included Components

1x Cast aluminum intake housing with velocity stack
1x High-flow cotton-gauze air filter (pre-oiled)
Complete mounting hardware kit (O-rings, bolts, spacers, back plate, velocity stack, etc.)

Product Description

The RK-3952 Street Metal Air Intake System from K&N is a direct-fit replacement for stock air cleaner systems on many Harley-Davidson Touring, Softail, and Dyna models from 2008 through 2017. By replacing the restrictive OE air cleaner with a high-volume cast-aluminum housing, integrated velocity stack, and oversized K&N cotton-gauze filter, this system significantly improves airflow - resulting in better throttle response, stronger engine sound, and noticeable horsepower gains (~7 HP under ideal conditions). The matte-black side-draft housing with sanded-fin styling also adds aggressive custom looks under the hood.

Installation is straightforward, typically completed in under 90 minutes using the supplied hardware. The included filter is pre-oiled, washable, and reusable - offering long-term value and reduced maintenance compared to disposable filters. Internal breathers replace external stock breather routing for a clean, streamlined installation. RK-3952 is a great choice for riders who want to combine performance gains, improved engine breathing, and bold visual style without complicated modifications.