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
-
TRASK Assault Air Cleaner - Reverse Cut - XL TM-1022-RC
TRASK
$539.95A high-flow intake system demands an equally capable air cleaner—the TRASK Assault XL delivers both form and function with precision-engineered airflow optimization. This billet aluminum design reduces intake restriction while maintaining consistent air...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
$132.95When you're running high-flow intake and exhaust systems, your fuel mixture needs to adapt—or risk heat buildup that'll compromise engine reliability and performance. The NAMZ Fuel Injector Enrichener automatically adjusts your fuel delivery by...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
$972.95If you're running a Twin Cam Harley from '99-'01, this total kit delivers immediate gains in throttle response, acceleration, and fuel efficiency without requiring custom fabrication. The 42mm Smoothbore carburetor is engineered to optimize air-fuel...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
$972.95 -
MIKUNI HSR 42 Carburetor Kit - '94-'03 XL 42-10
MIKUNI
$510.95The MIKUNI HSR 42 carburetor delivers responsive throttle control and improved fuel atomization over aging stock carbs, making it essential for any XL engine rebuild or performance upgrade. This bolt-on kit eliminates tuning headaches by accepting your...4210- 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
$18.38The MIKUNI HSR Series 45 pump nozzle is engineered for precision fuel atomization in high-performance carburetors, delivering consistent jetting across a wide range of engine speeds and loads. This OEM-quality component ensures reliable cold starts,...10070326- SKU:
- 10070326
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- 4 PACK
- PRODUCT NAME:
- PUMP NOZZLE
- RIDING STYLE:
- STREET
$18.38 -
MIKUNI Flange Adapter - Black - 48mm HS42/062-48K
MIKUNI
$35.70If you're running a MIKUNI carb setup, this flange adapter is essential for clean, efficient fuel delivery without restrictions. The straight-through design eliminates turbulence in the intake tract, preserving the precise calibration your engine demands...HS4206248- SKU:
- HS4206248
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$35.70 -
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 efficiency through a precision 42mm smooth bore design—all...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
$596.95 -
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 challenge. This harness adapter lets you connect a second...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 original aesthetic—no hacked-up intake manifold required...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 improves fuel atomization and air velocity, translating...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 consolidates filtration, intake velocity, and breather...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 airflow paths with a mandrel-bent aluminum tube and...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 restrictive OE intake components with a high-flow design...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 vapors directly through the throttle body. The radius...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 expensive dyno sessions. Load the map that matches your...10202664- SKU:
- 10202664
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- TUNING SYSTEM
- UNITS:
- KIT
$1,088.95Qty in Cart: 0Quantity:Price:$1,088.95Subtotal: -
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 self-adjusting your air/fuel ratio across all riding...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 stock carburetion while maintaining compatibility with...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 smoothbore design that optimizes fuel atomization and...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: -
FEULING OIL PUMP CORP. Fuel Injector 9942
FEULING OIL PUMP CORP.
$99.95Precise fuel delivery is the foundation of consistent engine performance, and a worn or failing fuel injector will compromise throttle response, fuel economy, and combustion efficiency across your entire power band. The Feuling Oil Pump Corp. Fuel...10220114- 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.
$139.95If you're running ported cylinder heads and a larger throttle body, you're leaving performance on the table without proper intake velocity management. This Feuling velocity stack delivers measurable horsepower and torque gains by optimizing air charge...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:
