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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TRASK Assault Air Cleaner - Reverse Cut - XL TM-1022-RC
TRASK
$539.95Features a billet aluminum backing plate with hidden integrated breather system and a plexiglass outer cove, Snap-in velocity stack for improved airflow, Dyno developed and tested, Made in the U.S.A.10102630- SKU:
- 10102630
- Availability:
- Ships Same Business Day
- Weight:
- 3.75 LBS
- BASE COLOR:
- BLACK
- AIR CLEANER SHAPE:
- ROUND
- DESIGN:
- BREATHER
- FILTER MEDIA MATERIAL:
- COTTON GAUZE
- MODEL:
- ASSAULT CHARGE
- PRODUCT NAME:
- AIR CLEANER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- REVERSE CUT
- BASE FINISH:
- POWDER-COATED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- UNITS:
- KIT
$539.95Qty in Cart: 0Quantity:Price:$539.95Subtotal: -
NAMZ Fuel Injector Enrichener - '07-'10 Big Twin Race NR-XIED
NAMZ
$132.95Installs in a few minutes; simply plug in between the oxygen sensors and the OEM wiring harness, Recommended for models with high-flow air intakes and exhausts, Reduce your engine's temperature 20 to 30 degrees, Made in the U.S.A.10201151- SKU:
- 10201151
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- COLOR/FINISH:
- BLACK
- UNITS:
- PAIR
- BASE COLOR:
- BLACK
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- PRODUCT NAME:
- OXYGEN SENSOR CONTROLLER
- PROGRAMMING:
- PRE-PROGRAMMED
- RIDING STYLE:
- STREET
$132.95Qty in Cart: 0Quantity:Price:$132.95Subtotal: -
MIKUNI Total Kit - Twin Cam '99-'01 42-19
MIKUNI
$972.95Include a performance intake manifold, rubber flange, 42mm carb, high-flow K&N filter, air cleaner cover, breather kit and hardware, Total kits include the redesigned 42mm Smoothbore carb in a natural finish, Increase throttle response and power,...4219- SKU:
- 4219
- Availability:
- Ships Same Business Day
- Weight:
- 8.40 LBS
- BASE FINISH:
- NATURAL
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- NATURAL
- FEATURES:
- INCLUDES CHROME AIR CLEANER COVER
- FEATURES:
- INCLUDES MANIFOLD
- BASE FINISH:
- CHROME
- BORE SIZE METRIC:
- 42.00 MM
- STYLE:
- SMOOTH BORE
- UNITS:
- KIT
- PRODUCT NAME:
- CARBURETOR KIT
$972.95Qty in Cart: 0Quantity:Price:$972.95Subtotal: -
MIKUNI HSR 42 Carburetor Kit - '94-'03 XL 42-10
MIKUNI
$510.95Easy kit accept the original H-D intake manifold, choke cable, air cleaner and throttle cable, Includes installation instructions and hardware, Retains stock look4210- SKU:
- 4210
- Availability:
- Ships Same Business Day
- Weight:
- 5.50 LBS
- BASE FINISH:
- NATURAL
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- CARBURETOR KIT
- RIDING STYLE:
- STREET
- CARBURETOR SIZE METRIC:
- 42.00 MM
- UNITS:
- EACH
$510.95Qty in Cart: 0Quantity:Price:$510.95Subtotal: -
MIKUNI HSR Series 45 Pump Nozzle TM42/11-60
MIKUNI
$6.56Made in Japan10070326- SKU:
- 10070326
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- 4 PACK
- PRODUCT NAME:
- PUMP NOZZLE
- RIDING STYLE:
- STREET
$6.56Qty in Cart: 0Quantity:Price:$6.56Subtotal: -
MIKUNI Flange Adapter - Black - 48mm HS42/062-48K
MIKUNI
$35.70Original straight-through design, Includes clamp, Made in JapanHS4206248- SKU:
- HS4206248
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$35.70Qty in Cart: 0Quantity:Price:$35.70Subtotal: -
MIKUNI HSR 42 Easy Kit - '90-'99 Big Twin 42-7
MIKUNI
$596.95Kits include the redesigned 42mm smooth bore carb in a natural finish, Increases throttle response and power, acceleration and gas mileage, Includes installation instructions and hardware, Use stock throttle cables for easier installation427- 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
$20.95It is installed to the bike's wiring harness at the 36-pin ECM connector (connection requires harness plug disassembly; two terminated wires are inserted into two unused ports in the 36-pin connector, and a ground wire added), Handy for motorcycle models...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
$460.00Easy kits accept the original H-D intake manifold, chock cable, air cleaner and throttle cables, Increases throttle response, power, and mileage, Includes installation instructions and hardware, Retains stock look, Made in Japan4211- 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
$972.95Kits include the redesigned 42mm smooth bore carb in a natural finish, Increases throttle response and power, acceleration and gas mileage, Use stock throttle cables for easier installation, Includes installation instructions and hardware428- 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
$259.99Developed around an over-sized K&N high-flow air filter that is designed to boost performance, filtration and service intervals, Aluminum backing plate with an integrated velocity stack provides a solid mounting surface, Built-in breather system replaces...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
$519.99K&N High-Flow air filter greatly increases performance and horsepower, Kit includes breather assembly and all necessary mounting hardware, Mandrel bent aluminum intake tube, Made in the U.S.A.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
$314.99Developed around an over-sized K&N high-flow air filter that is designed to boost performance, filtration and service intervals, Aluminum backing plate with an integrated velocity stack provides a solid mounting surface, Built-in breather system 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
$459.95Each hidden breather is O-ringed at the heads, passes through the backing plate and exits at the mouth of the throttle body through proprietary shooter tubes eliminating the need for any external hoses or hardware, Just wash and re-use for long lasting...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
$1,088.95Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User's Manual, technical support and free software and updates, Hundreds of...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
$1,088.95Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User's Manual, technical support and free software and updates, Hundreds of...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
$955.95Includes a performance intake manifold, rubber flange, 45mm carb, high-flow K&N filter, air cleaner cover, breather kit and hardware, Increase throttle response and power, acceleration and gas mileage, Use stock throttle cables for easier installation,...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
$461.95Kit includes the redesigned 42mm smoothbore carb in a natural finish, Includes installation instructions and hardware, Kits are not for use on models with cruise controls4218- 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: -
FEULING OIL PUMP CORP. Fuel Injector 9942
FEULING OIL PUMP CORP.
$99.95OEM replacements and upgrades available as listed10220114- SKU:
- 10220114
- Availability:
- Ships Same Business Day
- Weight:
- 1.69 LBS
- PRODUCT NAME:
- FUEL INJECTOR
- PRODUCT NAME:
- FUEL INJECTOR RACE ONLY
- FLOW RATE IMPERIAL:
- 38.89 LB/H
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$99.95 -
FEULING OIL PUMP CORP. Velocity Stack - M8 - 3" 5400
FEULING OIL PUMP CORP.
$139.95Impressive horsepower and torque gains on engines running modified and ported cylinder heads and intakes with larger throttle bodies, Great performance part for racing and for those that want to head to the track on the weekend, 3” tall billet...10102578- SKU:
- 10102578
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- BASE FINISH:
- NATURAL
- MATERIAL:
- BILLET ALUMINUM
- BASE COLOR:
- SILVER
- PRODUCT NAME:
- VELOCITY STACK
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- SILVER
- UNITS:
- EACH
$139.95Qty in Cart: 0Quantity:Price:$139.95Subtotal:
