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
-
ROUGH CRAFTS Finned Air Cleaner - Chrome RC-600-004
ROUGH CRAFTS
$479.95If you're running an M8 intake and tired of oil blow-by compromising your air filter's efficiency, the ROUGH CRAFTS Finned Air Cleaner eliminates that problem while delivering cleaner airflow to your engine. This chrome-finished piece integrates Arlen...10102728- SKU:
- 10102728
- Availability:
- Ships Same Business Day
- Weight:
- 3.65 LBS
- COLOR/FINISH:
- CHROME
- MODEL:
- BIG SUCKER
- UNITS:
- EACH
- MATERIAL:
- CNC BILLET ALUMINUM
- PRODUCT NAME:
- AIR CLEANER
- RIDING STYLE:
- STREET
- BASE COLOR:
- SILVER
- FILTER MEDIA MATERIAL:
- SYNTHETIC
- DESIGN:
- FINNED
$479.95 -
ROUGH CRAFTS Finned Air Cleaner - Chrome RC-600-005
ROUGH CRAFTS
$479.95Oil blow-by issues and restrictive intake designs rob your M8 of usable horsepower and create maintenance headaches. The ROUGH CRAFTS Finned Air Cleaner delivers clean, unrestricted airflow through proprietary shooter tubes that eliminate external hoses...10102729- SKU:
- 10102729
- Availability:
- Ships Same Business Day
- Weight:
- 3.80 LBS
- COLOR/FINISH:
- CHROME
- MODEL:
- BIG SUCKER
- PRODUCT NAME:
- AIR CLEANER
- UNITS:
- EACH
- DESIGN:
- FINNED
- FILTER MEDIA MATERIAL:
- SYNTHETIC
- BASE COLOR:
- SILVER
- RIDING STYLE:
- STREET
- MATERIAL:
- CNC BILLET ALUMINUM
$479.95Qty in Cart: 0Quantity:Price:$479.95Subtotal: -
THUNDERMAX ECM Harness 309-324
THUNDERMAX
$20.95If you're running a ThunderMax ECM on a Dyna, Softail Rocker, or 02-05 V-Rod, this harness solves the real-world challenge of tight ECM clearances without compromising your fuel management system. The 309-324 integrates seamlessly into your factory...10220059- SKU:
- 10220059
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- COMMUNICATION HARNESS
- RIDING STYLE:
- STREET
$20.95 -
THUNDERMAX Electronically Commutated Motor with Auto Tune - '16-'17 Softail 309-563
THUNDERMAX
$1,088.95Tuning your Softail's fuel delivery and ignition timing doesn't require expensive dyno sessions or guesswork—the ThunderMax ECM handles it automatically. Dual wide-band oxygen sensors constantly monitor your bike's combustion efficiency across all riding...10202850- SKU:
- 10202850
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
$1,088.95 -
THUNDERMAX Module with Auto Tune - '08-'13 FLHT 309-362
THUNDERMAX
$1,088.95Factory ECM tuning leaves performance on the table—ThunderMax Auto-Tune delivers adaptive, closed-loop fuel mapping that continuously adjusts to your engine's specific setup without requiring a dyno. Whether you're running bolt-on modifications or forced...10200836- SKU:
- 10200836
- Availability:
- Ships Same Business Day
- Weight:
- 2.81 LBS
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
- PROGRAMMING:
- AUTOTUNE
- MODEL:
- THUNDERMAX
- OXYGEN LOOP CONTROL:
- CLOSED LOOP
- PROGRAMMING:
- DOWNLOADABLE MAPS
- TYPE:
- AIR/FUEL RATIO
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- RIDING STYLE:
- STREET
- OXYGEN SENSOR BAND:
- WIDE-BAND
$1,088.95 -
THUNDERMAX ECM with Auto Tune 309-382
THUNDERMAX
$1,088.95If you're running a tuned Harley or performance big twin, your factory ECM is holding you back. The ThunderMax ECM with Auto-Tune 309-382 replaces that limiting computer with a closed-loop tuning system that continuously adapts your air/fuel ratio across...10202360- SKU:
- 10202360
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- MODEL:
- THUNDERMAX
- OXYGEN SENSOR BAND:
- WIDE-BAND
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- RIDING STYLE:
- STREET
- OXYGEN LOOP CONTROL:
- CLOSED LOOP
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
- TYPE:
- AIR/FUEL RATIO
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- PROGRAMMING:
- AUTOTUNE
- PROGRAMMING:
- DOWNLOADABLE MAPS
$1,088.95 -
THUNDERMAX ECM with Auto Tune 309-485
THUNDERMAX
$1,088.95Factory ECM tuning limits your bike's potential—the ThunderMax 309-485 unlocks it. This plug-and-play fuel management system uses real-time wide-band oxygen sensors and closed-loop control to continuously self-adjust your air/fuel ratio across all riding...10202361- SKU:
- 10202361
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- MODEL:
- THUNDERMAX
- BASE COLOR:
- BLACK
- PHYSICAL CONNECTION:
- PLUG-IN (OEM STYLE CONNECTORS)
- FEATURE:
- INCLUDES TWO OXYGEN SENSORS
- PROGRAMMING:
- AUTOTUNE
- PROGRAMMING:
- DOWNLOADABLE MAPS
- RIDING STYLE:
- STREET
- OXYGEN LOOP CONTROL:
- CLOSED LOOP
- OXYGEN SENSOR BAND:
- WIDE-BAND
- PRODUCT NAME:
- ELECTRONIC CONTROL MODULE
- TYPE:
- AIR/FUEL RATIO
- UNITS:
- KIT
$1,088.95 -
ROUGH CRAFTS Round Air Cleaner - Black RC-600-008
ROUGH CRAFTS
$479.95The ROUGH CRAFTS Round Air Cleaner eliminates the intake complexity that plagues M8 engines while delivering genuine airflow gains through Arlen Ness Big Sucker™ technology. Its integrated design routes breather flow directly through the throttle body...10102732- SKU:
- 10102732
- Availability:
- Ships Same Business Day
- Weight:
- 3.60 LBS
- BASE COLOR:
- BLACK
- MODEL:
- BIG SUCKER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- DESIGN:
- ROUND
- FILTER MEDIA MATERIAL:
- SYNTHETIC
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- AIR CLEANER
- RIDING STYLE:
- STREET
$479.95 -
ROUGH CRAFTS Round Air Cleaner - Black - Twin Cam RC-600-010
ROUGH CRAFTS
$479.95Stock intake systems restrict airflow and trap blow-by gases that degrade performance on modern Twin Cam engines. The ROUGH CRAFTS Round Air Cleaner eliminates these limitations with a sealed design that routes crankcase ventilation directly through the...10102734- SKU:
- 10102734
- Availability:
- Ships Same Business Day
- Weight:
- 3.80 LBS
- COLOR/FINISH:
- BLACK
- DESIGN:
- ROUND
- FILTER MEDIA MATERIAL:
- SYNTHETIC
- MATERIAL:
- ALUMINUM
- MODEL:
- BIG SUCKER
- PRODUCT NAME:
- AIR CLEANER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BASE COLOR:
- BLACK
$479.95 -
MIKUNI HSR Series 45/48 Jet Needle J8-8CFY02-95
MIKUNI
$17.59Precise fuel metering is the foundation of carb tuning, and the Mikuni HSR Series 45/48 Jet Needle J8-8CFY02-95 delivers the needle taper and positioning accuracy your engine needs to run clean across the entire throttle range. Whether you're dialing in...J88CFY0295- SKU:
- J88CFY0295
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MODEL:
- RICHEST
- UNITS:
- EACH
- JET SIZE METRIC:
- 2.95 MM
- PRODUCT NAME:
- NEEDLE JET
- RIDING STYLE:
- STREET
- TYPE:
- FOR HSR 45
- TYPE:
- FOR HSR 48
$17.59Qty in Cart: 0Quantity:Price:$17.59Subtotal: -
MIKUNI Standard HSR Series 45/48 Jet Needle J8-8CFY02-97
MIKUNI
$17.59Precise fuel metering is the foundation of carburetor performance, and the Mikuni HSR jet needle directly controls how your engine responds across the throttle range. Whether you're tuning a high-performance cruiser or dialing in a custom build, an OEM...J88CFY0297- SKU:
- J88CFY0297
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MODEL:
- STANDARD
- PRODUCT NAME:
- NEEDLE JET
- TYPE:
- FOR HSR 48
- JET SIZE METRIC:
- 2.97 MM
- TYPE:
- FOR HSR 45
$17.59 -
MIKUNI HSR Series 45/48 Jet Needle J8-8CFY02-98
MIKUNI
$17.59Fine-tuning your HSR carburetors requires precision fuel delivery, and the Mikuni J8-8CFY02-98 jet needle delivers exactly that. This genuine Mikuni component ensures proper needle taper and atomization across your engine's operating range, preventing...J88CFY0298- SKU:
- J88CFY0298
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- EACH
- JET SIZE METRIC:
- 2.98 MM
- RIDING STYLE:
- STREET
- MODEL:
- LEANER
- TYPE:
- FOR HSR 45
- TYPE:
- FOR HSR 48
- PRODUCT NAME:
- NEEDLE JET
$17.59 -
MIKUNI HSR Series 42 Jet Needle J8-8DDY01-95
MIKUNI
$17.59Precise fuel metering is non-negotiable in high-performance carburetor tuning, and this genuine Mikuni jet needle delivers the consistency your engine demands. Whether you're dialing in a freshly rebuilt HSR carb or fine-tuning air-fuel ratios across the...J88DDY0195- SKU:
- J88DDY0195
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- NEEDLE JET
- RIDING STYLE:
- STREET
- MODEL:
- RICHEST
- TYPE:
- FOR HSR 42
- JET SIZE METRIC:
- 2.95 MM
- UNITS:
- EACH
$17.59 -
MIKUNI HSR Series 42 Jet Needle J8-8DDY01-96
MIKUNI
$17.59Precise fuel metering is the foundation of carburetor tuning, and the MIKUNI HSR Series 42 Jet Needle J8-8DDY01-96 delivers the needle taper and profile your engine demands for smooth throttle response across the entire RPM band. Whether you're...J88DDY0196- SKU:
- J88DDY0196
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- NEEDLE JET
- RIDING STYLE:
- STREET
- JET SIZE METRIC:
- 2.96 MM
- TYPE:
- FOR HSR 42
- MODEL:
- RICHER
- UNITS:
- EACH
$17.59 -
MIKUNI Standard HSR Series 42 Jet Needle J8-8DDY01-97
MIKUNI
$17.59Precise fuel metering is the foundation of reliable engine performance, and a worn or incorrect jet needle will compromise your carburetor's ability to deliver consistent air-fuel ratios across the throttle range. The MIKUNI Standard HSR Series 42 Jet...J88DDY0197- SKU:
- J88DDY0197
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- STANDARD
- TYPE:
- FOR HSR 42
- PRODUCT NAME:
- NEEDLE JET
- JET SIZE METRIC:
- 2.97 MM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$17.59 -
K & N Intake Kit - Satin Black 57-1134
K & N
$391.99A high-flow intake system directly increases volumetric efficiency, delivering more oxygen to your engine and unlocking measurable gains in horsepower and throttle response. The K&N 57-1134 combines a precision-engineered cast aluminum intake tube with...10102525- SKU:
- 10102525
- Availability:
- Ships Same Business Day
- Weight:
- 4.45 LBS
- AIR CLEANER SHAPE:
- CONE
- MODEL:
- AIRCHARGER
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- FILTER MEDIA MATERIAL:
- COTTON GAUZE
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- BASE FINISH:
- SATIN
- COLOR/FINISH:
- SATIN
- PRODUCT NAME:
- INTAKE SYSTEM
$391.99 -
K & N Intake Kit - Black 57-1137
K & N
$309.99A quality intake system directly impacts throttle response, fuel efficiency, and overall engine performance—especially under sustained load or in competition environments. The K&N 57-1137 delivers measurable airflow gains through cast aluminum...10102527- SKU:
- 10102527
- Availability:
- Ships Same Business Day
- Weight:
- 4.35 LBS
- MODEL:
- AIRCHARGER
- UNITS:
- KIT
- AIR CLEANER SHAPE:
- CONE
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- SATIN
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- BASE FINISH:
- SATIN
- FILTER MEDIA MATERIAL:
- COTTON GAUZE
- PRODUCT NAME:
- INTAKE SYSTEM
$309.99Qty in Cart: 0Quantity:Price:$309.99Subtotal: -
K & N Intake Kit - Silver 57-1137S
K & N
$309.99A quality intake system directly impacts your engine's ability to breathe, and that translates to measurable gains in horsepower and throttle response. The K&N 57-1137S delivers a high-flow design that reduces restriction while maintaining consistent air...10102528- SKU:
- 10102528
- Availability:
- Ships Same Business Day
- Weight:
- 4.35 LBS
- BASE FINISH:
- SATIN
- BASE COLOR:
- SILVER
- FILTER MEDIA MATERIAL:
- COTTON GAUZE
- MODEL:
- AIRCHARGER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- SATIN
- COLOR/FINISH:
- SILVER
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- INTAKE SYSTEM
- AIR CLEANER SHAPE:
- CONE
- UNITS:
- KIT
$309.99 -
MIKUNI HSR 42 Carburetor - Polish Finish TM42-6PK
MIKUNI
$530.00The MIKUNI HSR 42 Carburetor delivers the precision fuel metering and crisp throttle response that custom engine builders demand. Its smoothbore design minimizes restriction while maintaining stable idle and consistent performance across the RPM band. If...TM426P- SKU:
- TM426P
- Availability:
- Ships Same Business Day
- Weight:
- 3.40 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CARBURETOR
- UNITS:
- EACH
- BASE FINISH:
- POLISHED
- BORE SIZE METRIC:
- 42.00 MM
- COLOR/FINISH:
- POLISHED
- BASE FINISH:
- CHROME
- RIDING STYLE:
- STREET
- STYLE:
- SMOOTH BORE
$530.00Qty in Cart: 0Quantity:Price:$530.00Subtotal: -
JOKER MACHINE Knurled Gas Cap - Chrome 10-444C
JOKER MACHINE
$91.95A gas cap might seem like a minor component, but a quality one makes a real difference in daily usability and engine bay aesthetics. The JOKER MACHINE Knurled Gas Cap replaces your stock smooth-sided cap with a precision-engineered piece that's genuinely...07030645- SKU:
- 07030645
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- BASE COLOR:
- SILVER
- MOUNTING STYLE:
- RIGHT-HAND THREAD
- OVERALL THICKNESS METRIC:
- 12.7 MM
- STYLE:
- KNURLED
- MATERIAL:
- CNC BILLET ALUMINUM
- MODEL:
- KNURLED SERIES
- OUTSIDE DIAMETER IMPERIAL:
- 3'
- TYPE:
- VENTED
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- OUTSIDE DIAMETER METRIC:
- 76.2 MM
- OVERALL THICKNESS IMPERIAL:
- 1/2'
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- FUEL CAP
$91.95
