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
-
MAGNUM Fuel Tank Crossover Line - FLHT - 9 1/2" 38204
MAGNUM
$71.95Fuel system integrity is critical on any high-performance build, and a compromised crossover line can lead to inconsistent fuel delivery and potential leaks that sideline your machine. The MAGNUM Fuel Tank Crossover Line for FLHT models delivers the...07060027- SKU:
- 07060027
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- INSIDE DIAMETER IMPERIAL:
- 5/16'
- MODEL:
- STERLING CHROMITE II
- STYLE:
- BRAIDED
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CLEAR
- PRODUCT NAME:
- FUEL LINE
- RIDING STYLE:
- STREET
- LENGTH IMPERIAL:
- 9-1/2'
- TYPE:
- CROSSOVER
- UNITS:
- EACH
- BASE COLOR:
- CLEAR
- COLOR/FINISH:
- CHROME
- INSIDE DIAMETER METRIC:
- 7.9 MM
- LENGTH METRIC:
- 24 CM
- MATERIAL:
- STAINLESS STEEL
$71.95 -
On Sale
ARLEN NESS Monster/Velocity Air Cleaner Gasket/Hardware Kit 602-022
ARLEN NESS
MSRP: $39.95Now: $36.35Was: $39.95Air cleaner gaskets and hardware deteriorate with heat cycles and regular use, compromising sealing integrity and allowing unfiltered air to bypass your intake system. This complete replacement kit restores your Monster or Velocity air cleaner to OEM...10102879- SKU:
- 10102879
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- DESIGN:
- VELOCITY 65°
- MODEL:
- REPLACEMENT
- UNITS:
- KIT
- DESIGN:
- MONSTER SUCKER
- DESIGN:
- VELOCITY 90°
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- HARDWARE KIT
MSRP: $39.95Now: $36.35Was: $39.95 -
MIKUNI 42/45 HSR Series Cover Top - Black KHS-035
MIKUNI
$34.99The MIKUNI 42/45 HSR Series Cover Top keeps your carburetor assembly clean and protected from debris, dust, and moisture that can compromise fuel atomization and engine performance. This precision-engineered top ensures reliable airflow while maintaining...10070392- SKU:
- 10070392
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- COVER
- TYPE:
- CARBURETOR
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- DESIGN:
- WITHOUT MIKUNI LOGO
$34.99 -
MIKUNI 45 HSR Series O-Ring - 4-Pack N124.063
MIKUNI
$3.08Proper carburetor sealing is non-negotiable for consistent fuel delivery and peak engine performance. These OEM Mikuni o-rings prevent fuel leaks and maintain precise air-fuel ratios by creating reliable seals on your HSR Series carburetor. With a...10070327- SKU:
- 10070327
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- 4 PACK
- PRODUCT NAME:
- O-RING
- TYPE:
- MIKUNI
- RIDING STYLE:
- STREET
$3.08Qty in Cart: 0Quantity:Price:$3.08Subtotal: -
MIKUNI Main Jet Extension Kit HSR Series 48 KHS-034
MIKUNI
$34.99If you're running a MIKUNI HSR Series 48 carburetor, air bubbles in your fuel delivery directly impact throttle response and peak performance—especially under load. This main jet extension kit completely submerges the jet within the extender, eliminating...10060248- SKU:
- 10060248
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- JET KIT
- UNITS:
- KIT
- TYPE:
- MAIN
- RIDING STYLE:
- STREET
$34.99 -
MIKUNI HSR Series 48 Race Custom - Polished 48-2P
MIKUNI
$670.00If you're running a custom or race engine over 120ci, the MIKUNI HSR Series 48 delivers the throttle response and fuel delivery precision that separates competitive builds from the rest. This smoothbore carb eliminates the restriction of standard units,...482P- SKU:
- 482P
- Availability:
- Ships Same Business Day
- Weight:
- 3.65 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BASE FINISH:
- CHROME
- BASE FINISH:
- POLISHED
- STYLE:
- SMOOTH BORE
- CARBURETOR SIZE METRIC:
- 48.00 MM
- COLOR/FINISH:
- POLISHED
- PRODUCT NAME:
- CARBURETOR
$670.00 -
MIKUNI HSR Series 48 Race Custom Kit 48-2
MIKUNI
$550.95If you're running a built engine over 120 cubic inches, the MIKUNI HSR Series 48 Race Custom Kit delivers the throttle response and fuel atomization your race application demands. The HSR's smoothbore design eliminates venturi restrictions, giving you...482X- SKU:
- 482X
- Availability:
- Ships Same Business Day
- Weight:
- 3.55 LBS
- PRODUCT NAME:
- CARBURETOR
- CARBURETOR SIZE METRIC:
- 48.00 MM
- COLOR/FINISH:
- NATURAL
- BASE FINISH:
- NATURAL
- STYLE:
- SMOOTH BORE
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$550.95 -
MIKUNI HSR Series 45 Total Kit Big Twin Evolution 45-2
MIKUNI
$955.95The MIKUNI HSR Series 45 Total Kit delivers a complete carburetor system engineered to unlock measurable gains in throttle response, acceleration, and overall engine efficiency on Big Twin Evolution platforms. This bolt-on solution eliminates guesswork...452X- SKU:
- 452X
- Availability:
- Ships Same Business Day
- Weight:
- 8.45 LBS
- BASE FINISH:
- CHROME
- BORE SIZE METRIC:
- 45.00 MM
- UNITS:
- KIT
- COLOR/FINISH:
- NATURAL
- FEATURES:
- INCLUDES CHROME AIR CLEANER COVER
- FEATURES:
- INCLUDES MANIFOLD
- PRODUCT NAME:
- CARBURETOR KIT
- STYLE:
- SMOOTH BORE
- BASE FINISH:
- NATURAL
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
$955.95 -
REDA Single Fuel Can RGC1001
REDA
$49.95Extended range capability is essential for long-distance riding, and carrying reserve fuel gives you the confidence to tackle remote routes without worrying about fuel station availability. The REDA Single Fuel Can RGC1001 is purpose-built for...10300068- SKU:
- 10300068
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
$49.95 -
MIKUNI HSR Series 45 Jet Kit KHS-045
MIKUNI
$124.99The MIKUNI HSR Series 45 Jet Kit delivers precise fuel metering for carbureted engines requiring calibration beyond stock jetting specifications. Whether you're running a forced induction setup, higher-octane fuel, or altitude-specific tuning, this kit...10070323- SKU:
- 10070323
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- BASE COLOR:
- BRASS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BRASS
- MODEL:
- FOR HSR 45
- MATERIAL:
- BRASS
- UNITS:
- KIT
- PRODUCT NAME:
- JET KIT
$124.99 -
MIKUNI Jet HSR Series 45 Washer - 4-Pack 826-03002
MIKUNI
$4.20Proper jet sizing is critical for carburetor tuning, and worn or damaged washers compromise fuel atomization and throttle response. This OEM-spec 4-pack ensures your MIKUNI HSR45 maintains factory precision tolerances, whether you're fine-tuning for...10070324- SKU:
- 10070324
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
$4.20 -
MIKUNI Jet Needle E-Ring - 4-Pack BS32/126
MIKUNI
$3.58Jet needle tuning is critical to carburetor optimization, and the MIKUNI Jet Needle E-Ring gives you precise control over fuel delivery across the mid-range throttle range. If your carb is running rich or lean in the cruise-to-acceleration zone, swapping...10070325- SKU:
- 10070325
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
- FEATURES:
- FOR HSR45 CARBURETORS
- TYPE:
- NEEDLE
$3.58 -
MIKUNI HSR Series 48 Carburetor Rebuild Kit KHS-031
MIKUNI
$46.99Over time, carburetor seals and internal components degrade from fuel oxidation, heat cycling, and normal wear—leaving your HSR series carb running lean, hesitating, or flooding. This genuine Mikuni rebuild kit includes every gasket, O-ring, and wear...KHS031- SKU:
- KHS031
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- REPAIR KIT
- MODEL:
- FOR HSR 48
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- TYPE:
- CARBURETOR
$46.99 -
MIKUNI HSR 42/45/48 Smoothbore Carburetors Filter - 2.5" HS42/012
MIKUNI
$128.95The MIKUNI HSR 42/45/48 smoothbore carburetor filter keeps unwanted contaminants out of your fuel system while maintaining optimal airflow to your engine. A clean intake tract directly translates to consistent jetting response and reliable performance...HS42012250- SKU:
- HS42012250
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- BASE COLOR:
- BLACK
- FILTER SHAPE:
- ROUND
- MOUNTING FLANGE/INSIDE DIAMETER IMPERIAL:
- 2.50'
- UNITS:
- EACH
- PRODUCT NAME:
- AIR FILTER
- FILTER MEDIA MATERIAL:
- COTTON GAUZE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- STYLE:
- CLAMP-ON
$128.95 -
HORSEPOWER, INC Throttle Body - Black - 51mm /1.71 HPI-51D1-17B
HORSEPOWER, INC
$784.95A restrictive throttle body is often the first bottleneck limiting your engine's breathing potential. The HORSEPOWER, INC 51mm throttle body eliminates that restriction with flow bench-tested porting and precision CNC machining, delivering measurable...10220236- SKU:
- 10220236
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- MATERIAL:
- ALUMINUM
- MODEL:
- CABLE DRIVEN™
- TYPE:
- SINGLE BORE
- BORE SIZE METRIC:
- 51.00 MM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- THROTTLE BODY
- INTAKE RUNNER LENGTH IMPERIAL:
- 1.71'
$784.95Qty in Cart: 0Quantity:Price:$784.95Subtotal: -
HORSEPOWER, INC Throttle Body - Black - 55mm/1.80 HPI-55D1-18B
HORSEPOWER, INC
$784.95A restrictive stock throttle body robs your engine of potential airflow, limiting horsepower and throttle response. The HORSEPOWER, INC 55mm throttle body unleashes that trapped performance through CNC-ported internals and flow-bench validation,...10220237- SKU:
- 10220237
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- BORE SIZE METRIC:
- 55.00 MM
- MODEL:
- CABLE DRIVEN™
- TYPE:
- SINGLE BORE
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- INTAKE RUNNER LENGTH IMPERIAL:
- 1.80'
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- THROTTLE BODY
- RIDING STYLE:
- STREET
$784.95 -
HORSEPOWER, INC Throttle Body - Black - 51mm/1.71 HPI-51D6-17B
HORSEPOWER, INC
$784.95A larger throttle body is one of the most effective bolt-on upgrades for unlocking your engine's full potential—more air means more combustion, more power. This 51mm unit combines CNC-ported internals with flow-bench validation to deliver measurable...10220238- SKU:
- 10220238
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- MATERIAL:
- ALUMINUM
- MODEL:
- CABLE DRIVEN™
- RIDING STYLE:
- STREET
- TYPE:
- SINGLE BORE
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
- BORE SIZE METRIC:
- 51.00 MM
- INTAKE RUNNER LENGTH IMPERIAL:
- 1.71'
- PRODUCT NAME:
- THROTTLE BODY
$784.95 -
HORSEPOWER, INC Throttle Body - Black - 55mm/1.80 HPI-55D6-18B
HORSEPOWER, INC
$784.95A larger throttle body is one of the most direct paths to freeing up horsepower and torque in your engine—it simply allows more air to reach your combustion chambers with less restriction. This HORSEPOWER, INC unit combines CNC-ported internals with...10220239- SKU:
- 10220239
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- BORE SIZE METRIC:
- 55.00 MM
- MATERIAL:
- ALUMINUM
- MODEL:
- CABLE DRIVEN™
- RIDING STYLE:
- STREET
- TYPE:
- SINGLE BORE
- PRODUCT NAME:
- THROTTLE BODY
- COLOR/FINISH:
- BLACK
- INTAKE RUNNER LENGTH IMPERIAL:
- 1.80'
- UNITS:
- EACH
$784.95 -
HORSEPOWER, INC Throttle Body - Black - 55/1.80 HPI-55MF1-18B
HORSEPOWER, INC
$884.95If you're running a big-displacement engine that demands serious airflow, your OEM throttle body is already a bottleneck. The HORSEPOWER, INC 55mm throttle body replaces restrictive factory components with a fully ported, large-plenum design that unlocks...10220240- SKU:
- 10220240
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- MODEL:
- MAX FLOW I™
- PRODUCT NAME:
- THROTTLE BODY
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- INTAKE RUNNER LENGTH IMPERIAL:
- 1.80'
- UNITS:
- EACH
- BORE SIZE METRIC:
- 55.00 MM
- TYPE:
- SINGLE BORE
$884.95Qty in Cart: 0Quantity:Price:$884.95Subtotal: -
HORSEPOWER, INC Throttle Body - Black - 55/1.80 HPI-55MF6-18B
HORSEPOWER, INC
$884.95If you're running a large-displacement engine, your OEM throttle body is likely your biggest air-restriction bottleneck. This 55mm HORSEPOWER, INC unit completely replaces that constraint with a fully ported, internally machined design that delivers the...10220241- SKU:
- 10220241
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- COLOR/FINISH:
- BLACK
- BASE COLOR:
- BLACK
- BORE SIZE METRIC:
- 55.00 MM
- TYPE:
- SINGLE BORE
- UNITS:
- EACH
- INTAKE RUNNER LENGTH IMPERIAL:
- 1.80'
- MATERIAL:
- ALUMINUM
- MODEL:
- MAX FLOW I™
- PRODUCT NAME:
- THROTTLE BODY
- RIDING STYLE:
- STREET
$884.95Qty in Cart: 0Quantity:Price:$884.95Subtotal:
