Harley Air and Fuel
Harley Bike Air & Fuel Systems at JJ Motorsports
Optimize your Harley's performance with premium air and fuel components from JJ Motorsports. Our range includes air cleaners, carburetor kits, fuel valves, and enrichener brackets designed for better throttle response, fuel efficiency, and power gains on the road or track. Compatible with Softail, Dyna, Touring, and V-Rod models, these parts feature chrome finishes, high-flow filters, and stainless construction for durability and easy installation.
Shop trusted brands like Vance & Hines for VO2 air cleaners and Pingel for fuel valves. Explore related categories such as Harley engine parts for rebuild kits or Harley exhausts for complete tuning.
Top Harley Air & Fuel Products
- TODD'S CYCLE Mikuni Choke Bracket - Stainless MKE-1 – Relocates enrichener cable for HSR carbs, made in the U.S.A.
- PAUGHCO Ribbed Teardrop Air Cleaner 701-200 – Chrome-plated aluminum with mini filter and hardware.
- VANCE & HINES VO2 America Air Cleaner - M8 42045FG – High-flow with CNC billet cover and ARP hardware.
- UNI FILTER Old Style Air Cleaner - 6" NU-2439 – Polyurethane for maximum airflow and filtration.
- PINGEL Round Fuel Valve - Flag Chrome - 22mm 6311CRL – High-flow brass valve with adapter nut.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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MIKUNI HSR 42 Easy Kit - '90-'99 Big Twin 42-7
MIKUNI
$596.95If you're running a stock carburetor on your '90-'99 Big Twin, you're leaving power on the table. The MIKUNI HSR 42 Easy Kit delivers measurable gains in throttle response, acceleration, and fuel...427- SKU:
- 427
- Availability:
- Ships Same Business Day
- Weight:
- 5.88 LBS
- BASE FINISH:
- NATURAL
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- NATURAL
- FEATURES:
- INCLUDES CHROME AIR CLEANER COVER
- PRODUCT NAME:
- CARBURETOR KIT
- BASE FINISH:
- CHROME
- BORE SIZE METRIC:
- 42.00 MM
- RIDING STYLE:
- STREET
- STYLE:
- SMOOTH BORE
$596.95Qty in Cart: 0Quantity:Price:$596.95Subtotal: -
THUNDERMAX USB Pigtail 309-424
THUNDERMAX
$20.95If you're running a ThunderMax ECM on a Dyna, Softail Rocker, or early V-Rod with limited space around the engine control module, the THUNDERMAX USB Pigtail 309-424 solves a real installation...10201855- SKU:
- 10201855
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- COLOR/FINISH:
- BLACK
- PHYSICAL CONNECTION:
- SPLICE-IN
- TYPE:
- REPLACEMENT COMPONENT
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- USB PIG TAIL HARNESS
- MODEL:
- THUNDERMAX
- RIDING STYLE:
- STREET
$20.95 -
MIKUNI HSR Series 42 S2 - XL1200 '94-'06 42-11
MIKUNI
$460.00If you're running a stock Mikuni on your XL1200, you're leaving performance on the table. The HSR Series 42 S2 delivers measurable gains in throttle response and power while maintaining your bike's...4211- SKU:
- 4211
- Availability:
- Ships Same Business Day
- Weight:
- 4.31 LBS
- PRODUCT NAME:
- CARBURETOR KIT
- BASE FINISH:
- NATURAL
- RIDING STYLE:
- STREET
- CARBURETOR SIZE METRIC:
- 42.00 MM
- COLOR/FINISH:
- NATURAL
- UNITS:
- EACH
$460.00Qty in Cart: 0Quantity:Price:$460.00Subtotal: -
MIKUNI HSR Series 42 Total Kit - '84-'99 Evolution 42-8
MIKUNI
$972.95The MIKUNI HSR Series 42 is purpose-built for Evolution-platform engines, delivering measurable gains in throttle response and acceleration through precision carburetion. A 42mm smooth bore design...428- SKU:
- 428
- Availability:
- Ships Same Business Day
- Weight:
- 9.00 LBS
- BORE SIZE METRIC:
- 42.00 MM
- PRODUCT NAME:
- CARBURETOR KIT
- UNITS:
- KIT
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- NATURAL
- FEATURES:
- INCLUDES CHROME AIR CLEANER COVER
- FEATURES:
- INCLUDES MANIFOLD
- BASE FINISH:
- NATURAL
- BASE FINISH:
- CHROME
- RIDING STYLE:
- STREET
- STYLE:
- SMOOTH BORE
$972.95Qty in Cart: 0Quantity:Price:$972.95Subtotal: -
K & N Flare Intake Kit - Black - Twin Cam RK-3932B
K & N
$259.99A high-flow intake system directly impacts engine breathing efficiency, translating to measurable gains in horsepower and throttle response on Twin Cam applications. The K&N Flare Intake Kit...10102100- SKU:
- 10102100
- Availability:
- Ships Same Business Day
- Weight:
- 4.22 LBS
- PRODUCT NAME:
- INTAKE KIT
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- FILTER MEDIA MATERIAL:
- COTTON
- INSIDE DIAMETER IMPERIAL:
- -
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- STYLE:
- FLARE
- BASE COLOR:
- BLACK
- FILTER HEIGHT IMPERIAL:
- 2.125'
- MODEL:
- STREET METAL
$259.99 -
K & N Intake Kit - Polished 63-1131P
K & N
$519.99A high-flow intake system directly increases air velocity and volume to your engine, translating to measurable gains in horsepower and throttle response. The K&N 63-1131P replaces restrictive factory...10102080- SKU:
- 10102080
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- COLOR/FINISH:
- CHROME
- MODEL:
- AIRCHARGER
- PRODUCT NAME:
- INTAKE KIT
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- FILTER MEDIA MATERIAL:
- COTTON GAUZE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BRIGHT
- FEATURES:
- WASHABLE
- MATERIAL:
- ALUMINUM
$519.99Qty in Cart: 0Quantity:Price:$519.99Subtotal: -
K & N Intake Kit - Black RK-3952
K & N
$314.99A quality intake system is fundamental to unlocking your engine's full potential—it directly impacts airflow efficiency, throttle response, and overall horsepower delivery. The K&N RK-3952 replaces...10102364- SKU:
- 10102364
- Availability:
- Ships Same Business Day
- Weight:
- 4.05 LBS
- PRODUCT NAME:
- INTAKE KIT
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- FILTER HEIGHT IMPERIAL:
- 2.39'
- INSIDE DIAMETER IMPERIAL:
- -
- MATERIAL:
- ALUMINUM
- STYLE:
- SIDE DRAFT
- FILTER MEDIA MATERIAL:
- COTTON
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- MODEL:
- STREET METAL
$314.99 -
ROUGH CRAFTS Finned Air Cleaner - Chrome RC-600-006
ROUGH CRAFTS
$459.95Harsh blow-by from M8 powerplants compromises both performance and engine longevity—the ROUGH CRAFTS Finned Air Cleaner eliminates this issue with a sealed, integrated design that routes crankcase...10102730- SKU:
- 10102730
- Availability:
- Ships Same Business Day
- Weight:
- 3.80 LBS
- BASE COLOR:
- SILVER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- DESIGN:
- FINNED
- MATERIAL:
- CNC BILLET ALUMINUM
- PRODUCT NAME:
- AIR CLEANER
- FILTER MEDIA MATERIAL:
- SYNTHETIC
- MODEL:
- BIG SUCKER
- UNITS:
- EACH
$459.95Qty in Cart: 0Quantity:Price:$459.95Subtotal: -
THUNDERMAX ECM with Auto Tune - '17+ FLHT 309-588
THUNDERMAX
$1,088.95Factory ECM tuning leaves performance on the table—the THUNDERMAX ECM with Auto-Tune gives you closed-loop control over your air/fuel ratio, ignition timing, and startup maps without requiring...10202664- SKU:
- 10202664
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- TUNING SYSTEM
- UNITS:
- KIT
$1,088.95 -
THUNDERMAX ECU with Auto Tune - '18 Softail 309-589
THUNDERMAX
$1,088.95Factory ECUs limit your Softail's potential, leaving performance gains on the table and throttle response compromised. The ThunderMax ECU with Auto-Tune replaces guesswork with precision—continuously...10202795- SKU:
- 10202795
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- BASE COLOR:
- BLACK
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
- MODEL:
- THUNDERMAX
- OXYGEN LOOP CONTROL:
- CLOSED LOOP
- OXYGEN SENSOR BAND:
- WIDE-BAND
- PROGRAMMING:
- AUTOTUNE
- TYPE:
- AIR/FUEL RATIO
- UNITS:
- KIT
- PROGRAMMING:
- DOWNLOADABLE MAPS
- RIDING STYLE:
- STREET
$1,088.95 -
MIKUNI HSR 45 Carburetor - '99-'06 Twin Cam 45-4
MIKUNI
$955.95The MIKUNI HSR 45 Carburetor transforms your '99-'06 Twin Cam engine with measurable gains in throttle response, acceleration, and overall power delivery. This bolt-on system replaces restrictive...454X- SKU:
- 454X
- Availability:
- Ships Same Business Day
- Weight:
- 8.26 LBS
- BORE SIZE METRIC:
- 45.00 MM
- FEATURES:
- INCLUDES CHROME AIR CLEANER COVER
- PRODUCT NAME:
- CARBURETOR KIT
- UNITS:
- KIT
- BASE FINISH:
- CHROME
- BASE FINISH:
- NATURAL
- STYLE:
- SMOOTH BORE
- COLOR/FINISH:
- NATURAL
- COLOR/FINISH:
- CHROME
- FEATURES:
- INCLUDES MANIFOLD
- RIDING STYLE:
- STREET
$955.95 -
MIKUNI HSR Series 42 Easy Kit - '90-'06 Big Twin 42-18
MIKUNI
$461.95The MIKUNI HSR Series 42 delivers measurable improvements in throttle response and mid-range power delivery for your Big Twin engine. This bolt-on kit replaces restrictive OEM carburetion with a 42mm...4218- SKU:
- 4218
- Availability:
- Ships Same Business Day
- Weight:
- 3.81 LBS
- UNITS:
- EACH
- BASE FINISH:
- NATURAL
- BORE SIZE METRIC:
- 42.00 MM
- STYLE:
- SMOOTH BORE
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- CARBURETOR KIT
- RIDING STYLE:
- STREET
$461.95Qty in Cart: 0Quantity:Price:$461.95Subtotal: -
RSD Clarity Air Cleaner - Chrome - CV 0206-2059-CH
RSD
$664.95A clean, unrestricted air intake is foundational to engine performance, and the RSD Clarity Air Cleaner delivers both function and form. By optimizing airflow into your carb or throttle body while...10101039- SKU:
- 10101039
- Availability:
- Ships Same Business Day
- Weight:
- 4.10 LBS
- BASE COLOR:
- SILVER
- FILTER MEDIA MATERIAL:
- COTTON
- MODEL:
- CLARITY
- PRODUCT NAME:
- AIR CLEANER KIT
- BRAND SPECIFIC COLOR:
- CHROME
- UNITS:
- KIT
- AIR CLEANER SHAPE:
- ROUND
- COLOR/FINISH:
- CHROME
- MATERIAL:
- CNC BILLET ALUMINUM
- RIDING STYLE:
- STREET
$664.95 -
K & N Shaker Intake Kit - Black RK-3955
K & N
$391.99A high-flow intake system directly increases your engine's breathing efficiency, translating to measurable gains in horsepower and throttle response. The K&N Shaker Intake Kit eliminates restrictive...10102290- SKU:
- 10102290
- Availability:
- Ships Same Business Day
- Weight:
- 4.95 LBS
- FILTER HEIGHT IMPERIAL:
- 2.469'
- PRODUCT NAME:
- INTAKE KIT
- STYLE:
- SHAKER
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- MODEL:
- STREET METAL
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- FILTER MEDIA MATERIAL:
- COTTON
- INSIDE DIAMETER IMPERIAL:
- -
- MATERIAL:
- ALUMINUM
$391.99 -
K&S TECHNOLOGIES Carburetor Air Cut-Off Valve Set 56-1018
K&S TECHNOLOGIES
$30.95Deceleration backfire is a common tuning headache that compromises engine reliability and performance. This K&S Technologies air cut-off valve set restores proper fuel mixture control during throttle...10030308- SKU:
- 10030308
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- UNITS:
- SET
- PRODUCT NAME:
- VALVE
- TYPE:
- AIR CUT-OFF
$30.95 -
On Sale
GOODRIDGE Fuel Line - Black - FLT HDFL-001EFI/BK
GOODRIDGE
MSRP: $74.95Now: $67.46Was: $74.95Stock fuel lines degrade under sustained performance demands, risking leaks and inconsistent fuel delivery that compromise engine reliability. The GOODRIDGE Fuel Line system replaces vulnerable...07060296- SKU:
- 07060296
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- BRAIDED
- COLOR/FINISH:
- BLACK
- LENGTH IMPERIAL:
- 7-3/4'
- PRODUCT NAME:
- FUEL LINE
- BASE COLOR:
- BLACK
- LENGTH METRIC:
- 197 MM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $74.95Now: $67.46Was: $74.95 -
On Sale
GOODRIDGE Fuel Line - Black - XL HDFL-004EFI/BK
GOODRIDGE
MSRP: $112.95Now: $101.66Was: $112.95Stock fuel lines are vulnerable to degradation, permeation, and failure under high-performance demands. The GOODRIDGE Fuel Line replaces brittle OEM components with military-grade stainless steel...07060300- SKU:
- 07060300
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BASE COLOR:
- BLACK
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- FUEL LINE
- RIDING STYLE:
- STREET
- LENGTH IMPERIAL:
- 8-1/4'
- LENGTH METRIC:
- 210 MM
- STYLE:
- BRAIDED
MSRP: $112.95Now: $101.66Was: $112.95Qty in Cart: 0Quantity:Price:MSRP: $112.95Now: $101.66Was: $112.95Subtotal: -
On Sale
GOODRIDGE Fuel Line - Clear - XL HDFL-004EFI/CL
GOODRIDGE
MSRP: $112.95Now: $101.66Was: $112.95A fuel system is only as reliable as its weakest component—and stock fuel lines are often that vulnerability. The GOODRIDGE Fuel Line XL HDFL-004EFI/CL replaces OEM rubber lines with stainless steel...07060301- SKU:
- 07060301
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- BASE FINISH:
- NATURAL
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- CLEAR-COATED
- LENGTH IMPERIAL:
- 8-1/4'
- LENGTH METRIC:
- 210 MM
- PRODUCT NAME:
- FUEL LINE
- BASE FINISH:
- CLEAR-COATED
- COLOR/FINISH:
- STAINLESS STEEL
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- BRAIDED
MSRP: $112.95Now: $101.66Was: $112.95 -
On Sale
GOODRIDGE Universal Fuel Line Crossover - 6" HDCO-008
GOODRIDGE
MSRP: $19.95Now: $17.96Was: $19.95Proper fuel delivery is non-negotiable in high-performance racing, and a quality crossover ensures balanced tank pressure across both sides of your fuel system. This GOODRIDGE unit eliminates fuel...07060140- SKU:
- 07060140
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- BRAIDED
- COLOR/FINISH:
- CHROME
- BASE FINISH:
- CHROME
- FITTING CONNECTOR TYPE:
- 1/8' NPT MALE
- FITTING CONNECTOR TYPE IMPERIAL:
- 1/8' NPT MALE
- PRODUCT NAME:
- FUEL LINE
- TYPE:
- UNIVERSAL
- RIDING STYLE:
- STREET
- TYPE:
- CROSSOVER
- UNITS:
- EACH
MSRP: $19.95Now: $17.96Was: $19.95 -
On Sale
GOODRIDGE Crossover Fuel Line - Softail HDCO-005
GOODRIDGE
MSRP: $54.95Now: $49.46Was: $54.95Fuel line integrity is critical on high-performance builds—factory lines can restrict flow and fail under aggressive riding conditions. The GOODRIDGE Crossover Fuel Line eliminates weak points in...07060142- SKU:
- 07060142
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BASE FINISH:
- CLEAR-COATED
- COLOR/FINISH:
- CLEAR-COATED
- STYLE:
- BRAIDED
- MATERIAL:
- STAINLESS STEEL
- TYPE:
- CROSSOVER
- UNITS:
- EACH
- PRODUCT NAME:
- FUEL LINE
- RIDING STYLE:
- STREET
MSRP: $54.95Now: $49.46Was: $54.95
