Best Air Intake For Harley Davidson: 10 Options Compared

#1 · Best Overall

1. TOPRAMETAL Cone Big Sucker Kit

• Dimensions: 7.8"L x 7.8"W x 3.5"H
• Dimensions: 7.8"L x 7.8"W x 3.5"H

Best for: Broad-range Harley air cleaner.

Why it ranks #1: Lists fitment for Sportster, Dyna, Softail, and Touring families across several year ranges, and includes complete gasket and bolt kits.

Its stated fitment spans Sportster models from 2004–2024 and several Dyna, Softail, and Touring year ranges, giving this TOPRAMETAL air cleaner a broad model-family reach. The listing also includes a complete gasket and bolts kit, which brings basic mounting pieces together for riders assembling a compatible intake setup.

The fitment is divided into types, with separate year ranges and exclusions rather than one universal Harley application. Type B, for example, covers Dyna FXR, Softail, and Touring ranges but excludes specified special models; Type C covers later Softail, Touring, Trike, and named exceptions. Reviewing the exact range is therefore central to selection. The included complete gasket and bolts kit can simplify parts gathering, while the listed 7.8-by-7.8-by-3.5-inch dimensions help assess space.

Skip it if you need washable cotton-yarn filter material stated in the listing; TOPRAMETAL B0CP43Y1SY explicitly identifies that construction.

This is for Harley owners whose model and year appear within one of the listed fitment types and who want gaskets and bolts included. Check the stated exclusions carefully; its broad range does not make it a universal fit.

Listed on Amazon as: For harley air cleaner filter sportster street road glide king for harley davidson motorcycle air intake (Nake style -Black, B-For Softail/Dyna 93-15 ,Touring 01-07)

#2 · Best Washable Filter

2. TOPRAMETAL OPS Air Cleaner

• Dimensions: 7"L x 7"W x 3"H
• Weight: 4 lb
• Dimensions: 7"L x 7"W x 3"H

Best for: Washable cotton-yarn filter.

Why it ranks #2: Specifies Harley family and year-range fitments, identifies its cotton-yarn filter as washable and reusable, and includes complete gasket and bolt kits.

A washable, reusable cotton-yarn filter that requires oiling is the key maintenance feature of this TOPRAMETAL air cleaner. That material description gives owners a clear service routine, while the listing names Sportster, Dyna, Softail, and Touring application ranges and includes complete gasket and bolts kits for compatible installations.

The listing separates fitment into types with different year ranges and exclusions, so matching the motorcycle’s exact family and year is essential before selecting this cleaner. Its cotton-yarn filter is washable and reusable but requires oiling, which means maintenance involves more than rinsing alone. Complete gasket and bolts kits are included, helping consolidate basic installation parts. The listed dimensions are 7 by 7 by 3 inches, a useful reference when considering available space.

Skip it if you want a filter service routine that does not call for oiling; K&N 57-1137 is listed as washable and reusable without that instruction.

This suits owners whose Harley falls within its stated fitment ranges and who are comfortable washing and oiling a cotton-yarn element. Its model-year exclusions matter, so use the type-specific application details when narrowing the choice.

Listed on Amazon as: For harley air cleaner filter Sportster Softail Touring street road king glide Dyna for harley davidson air intake filters (OPS Black – Gray Filter, C-For Touring 08-16, Softail 16-17)

#3 · Best Later-Model Fit

3. ALLOYFORGE Heavy Breather Intake

• Dimensions: 12"L x 6.5"W x 8"H
• Dimensions: 12"L x 6.5"W x 8"H

Best for: High-airflow newer Harley models.

Why it ranks #3: Lists fitment for 2018-later Softail and 2017-later Touring and Freewheeler models, while clearly naming several fairing-related exclusions.

ALLOYFORGE claims 42% greater airflow than traditional Heavy Breather filters, making airflow the central distinction of this intake. Its compatibility list focuses on 2018–2024 Softail, 2017-later Touring, and 2017-later Freewheeler models, giving eligible riders a stated application window for a performance-oriented cleaner.

The kit includes an air filter and mounting hardware, combining the element with parts for installation rather than listing the filter alone. Its fitment exclusions are extensive: it does not fit specified models with fairing-lower glove boxes, speakers, or Road Glide fairing spoilers, among other named model-year exceptions. Checking those details is especially important for Touring owners. At 12 by 6.5 by 8 inches, the listed dimensions also provide a reference for assessing clearance.

Skip it if you ride a listed Touring configuration with excluded fairing equipment; TOPRAMETAL B0CPJ6QHKM lists older Touring ranges instead.

This is aimed at owners within ALLOYFORGE’s newer Softail, Touring, or Freewheeler ranges who want the stated airflow increase and included mounting hardware. Its fairing-related exclusions make configuration checking a key part of choosing it.

Listed on Amazon as: Heavy Breather Extreme Air Cleaner Intake Filter for Harley Touring, Softail, Street Electra Road King Glide, 2018-2022 (Black)

#4

4. K&N 57-1137 Intake Kit

• Dimensions: 11.75"L x 9.5"W x 4.88"H
• Weight: 4.2 lb
• Dimensions: 11.75"L x 9.5"W x 4.88"H

Best for: Reusable-filter performance upgrade.

Why it ranks #4: Includes an air filter, intake tube, back plate, gaskets, and parts kit, but its supplied listing does not specify Harley model fitment.

A high-flow filter rated for up to 100,000 miles before cleaning under normal highway driving is the defining feature of K&N’s 57-1137 kit. Its reusable element can reduce replacement-filter purchases, while the listed horsepower increase, sharper throttle response, and changed engine sound target riders seeking a more performance-focused intake.

The package includes an air filter, intake tube, two gaskets, back plate, parts kit, and literature packet, giving buyers several named installation components together. K&N also describes the filter as washable and reusable, with low-pressure-water cleaning supported by its Powersports information; that makes upkeep a refresh-and-reuse task rather than routine filter replacement. The claimed cleaning interval is conditional on normal highway driving, so riding conditions matter when planning maintenance.

Skip it if you need a Harley-specific fitment list before choosing; TOPRAMETAL’s air cleaner listings spell out model-family and year ranges.

This suits riders prioritizing a reusable filter and a packaged intake assembly, especially when reduced replacement-filter upkeep matters. Treat the stated cleaning interval as highway-condition guidance, and verify the application against your specific motorcycle before ordering.

Listed on Amazon as: K&N Cold Air Intake Kit: High Performance, Increase Horsepower, 57-1137

#5

5. K&N 57-1139 Intake Kit

• Weight: 4.2 lb

Best for: Complete reusable-filter intake kit.

Why it ranks #5: Offers a high-flow washable, reusable filter and a complete intake component list, though the supplied listing does not identify Harley applications.

K&N’s 57-1139 combines a washable high-flow filter with an intake tube, gasket, back plate, and parts kit, so its listed package extends beyond a replacement element. The reusable filter can go up to 100,000 miles before cleaning under normal highway driving, while K&N claims improved horsepower and throttle response.

The included intake tube and back plate provide named assembly components, and the gasket and parts kit bring additional pieces into the package. That can streamline gathering hardware for an application that matches the kit, although the supplied listing does not give a Harley model-year range. K&N describes the filter as washable and reusable, supporting ongoing service rather than automatic replacement. Its stated cleaning interval is tied to normal highway use, not every riding condition.

Skip it if you need explicit Harley model-year fitment in the product details; TOPRAMETAL B0CP43Y1SY lists motorcycle family and year ranges.

Consider this kit if its application matches your motorcycle and you want the filter and several intake components together. The washable element supports repeat use, but the mileage interval is conditional on normal highway driving and does not replace application checking.

Listed on Amazon as: K&N Cold Air Intake Kit: High Performance, Increase Horsepower, 57-1139

#6

6. K&N 57-1134 Intake Kit

• Weight: 4.2 lb

Best for: K&N kit with dual gaskets.

Why it ranks #6: Lists an air filter, intake tube, back plate, gaskets, and parts kit; exact Harley-Davidson compatibility is not stated in the supplied details.

Two gaskets are included with K&N’s 57-1134, a useful package distinction for riders comparing intake kits by supplied hardware. The kit also lists an intake tube, back plate, and parts kit alongside a washable high-flow air filter, combining assembly components with K&N’s claimed horsepower and throttle-response gains.

The washable filter can go up to 100,000 miles before cleaning under normal highway driving, offering a long stated interval before service in that particular use case. Its reusable construction supports cleaning rather than routine replacement. The included intake tube, back plate, two gaskets, and parts kit provide multiple named components in one package, which can reduce separate parts gathering when the kit matches the motorcycle. The supplied information does not give a Harley model-year range.

Skip it if you need a stated Harley fitment range before selecting; TOPRAMETAL B0CPJ6QHKM lists model families, years, and exclusions.

This is for buyers who value a multi-component intake package and want two gaskets included with the reusable filter. Confirm that the kit suits the intended motorcycle; its supplied details do not specify Harley model-year fitment.

Listed on Amazon as: K&N Cold Air Intake Kit: High Performance, Increase Horsepower, 57-1134

#7

7. K&N RK-3933B Intake System

Best for: Filter kit with back plates.

Why it ranks #7: Includes an air filter, two back plates, cover, and parts kit, but the listing supplies no specific Harley model or year fitment.

K&N’s RK-3933B package lists two back plates, a cover, air filter, and parts kit, giving it a distinct hardware bundle among the filter-focused options. Its high-flow filter is described as washable and reusable, while K&N claims improved horsepower, throttle response, and engine sound for the intake system.

The two back plates and cover make the package more than a single-element listing, potentially consolidating several named components for an application that uses them. K&N says the filter can go up to 100,000 miles before cleaning under normal highway driving, and its Powersports information supports washing and reuse. The listed details do not provide Harley model-year fitment, so the bundle’s component set should be matched to the intended motorcycle before installation.

Skip it if you need explicit Harley application years in the listing; TOPRAMETAL B0CP43Y1SY gives type-specific fitment ranges and exclusions.

This suits buyers whose intake setup uses the listed back plates and cover and who want a reusable high-flow filter in the package. Confirm the component application for the motorcycle, since the supplied details do not name Harley fitment years.

Listed on Amazon as: K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3933B

#8

8. K&N RK-3956 Intake System

• Dimensions: 12"L x 9.5"W x 4.88"H
• Weight: 4 lb
• Dimensions: 12"L x 9.5"W x 4.88"H

Best for: Reusable K&N filter element.

Why it ranks #8: Lists a washable, reusable high-flow filter and a 12-by-9.5-by-4.88-inch product size, without identifying Harley fitment.

The RK-3956 includes one K&N high-flow air filter, with listed dimensions of 12 by 9.5 by 4.88 inches and a weight of 4 pounds. Its washable, reusable design supports repeated filter service, while K&N links the intake system to claimed horsepower, throttle response, and engine-sound changes.

Because the package lists one air filter, this option fits a buyer sourcing the element rather than a complete intake assembly with a tube and gaskets. The stated dimensions can help assess whether the part suits the available space, but they do not establish motorcycle fitment. K&N says the filter can go up to 100,000 miles before cleaning under normal highway driving and supports washing and reuse, making maintenance conditions central to the interval.

Skip it if you want a complete assembly with intake tube and gaskets; K&N 57-1134 lists those components with its filter.

Choose this when the RK-3956 filter is the element your setup calls for and the listed dimensions suit the available space. It is a filter-only package, so buyers needing a full intake assembly should select accordingly.

Listed on Amazon as: K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3956

#9

9. K&N RK-3952 Intake System

• Dimensions: 12"L x 9.5"W x 3.75"H
• Weight: 3.9 lb
• Dimensions: 12"L x 9.5"W x 3.75"H

Best for: Filter-only K&N replacement.

Why it ranks #9: Provides a washable, reusable high-flow filter, but its supplied details list only one included air filter and no Harley-specific compatibility.

The RK-3952 package includes one high-flow air filter, making it a compact K&N option for riders who need the filter element rather than a listed intake-tube kit. The washable, reusable design supports repeated service, while K&N associates the system with increased horsepower, throttle response, and a changed engine sound.

K&N lists the RK-3952 at 12 by 9.5 by 3.75 inches and 3.9 pounds, useful reference points when checking space and handling for the intended application. Its single included component is an air filter, unlike a package listing tubes and gaskets, so buyers should plan around having the remaining intake hardware already. The washable element can go up to 100,000 miles before cleaning under normal highway driving; actual maintenance depends on conditions.

Skip it if you need intake tubes and gaskets in the same package; K&N 57-1137 lists those components alongside its filter.

Choose this when the intended setup calls for the RK-3952 filter and you already have the necessary intake hardware. Its reusable element suits riders willing to clean and re-oil or refresh a filter rather than routinely replacing the element.

Listed on Amazon as: K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3952

#10

10. K&N RK-3953 Intake System

• Weight: 3.9 lb

Best for: Compact filter-only K&N option.

Why it ranks #10: The listing describes a powersports high-flow filter but gives no Harley fitment, product dimensions, or included installation components beyond one filter.

At a listed 3.9 pounds, K&N’s RK-3953 package supplies one high-flow air filter rather than a catalogued set of intake tubes and gaskets. Its washable and reusable element offers a serviceable alternative to routine replacement, and K&N associates the intake system with increased horsepower, throttle response, and engine sound.

The filter can go up to 100,000 miles before cleaning under normal highway driving, so the claimed interval gives a maintenance reference for that use case. K&N’s Powersports information also describes low-pressure-water cleaning and reuse, helping owners refresh the element instead of buying another filter. Since the package lists only one air filter, installation depends on having the other required hardware for the intended motorcycle. The supplied details do not name a Harley fitment range.

Skip it if you need a named Harley year range to guide selection; TOPRAMETAL B0CPJ6QHKM specifies several fitment families and exclusions.

This filter-only option suits riders who already have the compatible intake hardware and want a reusable K&N element. Its maintenance interval is stated for normal highway driving, and the supplied product information does not identify Harley model-year applications.

Listed on Amazon as: K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3953