Harley Carburetor Kits
Harley-Davidson Carburetor Kits at JJ Motorsports
Upgrade your Harley's carburetion with premium kits from JJ Motorsports, featuring high-performance Mikuni HSR 48mm race kits and S&S Super E carbs for massive power gains and crisp throttle response on Sportster XL, Shovelhead, and Evo Big Twin models. These complete kits deliver reliable tuning and easy bolt-on installation.
Shop Mikuni and S&S Cycle carburetor kits for race-proven quality. Explore related categories such as Harley air and fuel for jets and rebuild kits, or Harley for exhaust and cams to complete your intake upgrades and unleash V-Twin potential.
Top Harley-Davidson Carburetor Kits
- Mikuni HSR Series 48 Race Custom Kit 48-2 – Complete 48mm HSR race carb kit; throttle cable, manifold, and tuning for Big Twin performance.
- S&S Cycle E Carburetor without Manifold 93-99 11-0442 – Super E carb for 93-99 Evo; high-flow for instant throttle snap.
- S&S Cycle E for 91-03 XL 11-0409 – Super E kit for 91-03 Sportster; complete with manifold for easy power gains.
- S&S Cycle E for 79-84 Shovelhead 11-0411 – Super E carb for Shovelhead; tuned for classic V-Twin revival.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! 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 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 -
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
$972.95 -
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: -
ZENITH FUEL SYSTEMS Standard Bendix Carburetor - 38mm 013731
ZENITH FUEL SYSTEMS
$542.95If you're running a naturally aspirated engine that demands reliable cold starts and crisp throttle response, the ZENITH FUEL SYSTEMS Standard Bendix Carburetor delivers proven performance without the complexity of modern fuel injection. This 38mm unit...DS289080- SKU:
- DS289080
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- CARBURETOR SIZE METRIC:
- 38.00 MM
- FEATURES:
- FIXED MAIN JET
- RIDING STYLE:
- STREET
- STYLE:
- FLAT SLIDE
- BASE FINISH:
- NATURAL
- PRODUCT NAME:
- CARBURETOR
- UNITS:
- EACH
- COLOR/FINISH:
- NATURAL
$542.95Qty in Cart: 0Quantity:Price:$542.95Subtotal: -
On Sale
S&S CYCLE "E" Carburetor without Manifold - '84-'92 11-0440
S&S CYCLE
MSRP: $695.95Now: $626.36Was: $695.95The S&S Cycle Super E carburetor delivers precise fuel delivery and responsive throttle control for Big Twin and Sportster engines, ensuring optimal performance across a wide rpm range. If you're building or rebuilding a classic Harley-Davidson, this...DS0440- SKU:
- DS0440
- Availability:
- Ships Same Business Day
- Weight:
- 6.50 LBS
- BASE COLOR:
- SILVER
- COLOR/FINISH:
- NATURAL
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CARBURETOR
- STYLE:
- SUPER E
- FEATURES:
- WITHOUT MANIFOLD
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $695.95Now: $626.36Was: $695.95Qty in Cart: 0Quantity:Price:MSRP: $695.95Now: $626.36Was: $695.95Subtotal: -
On Sale
S&S CYCLE "E" for '79-'85 XL with VOES Unit 11-0406
S&S CYCLE
MSRP: $795.95Now: $716.36Was: $795.95The S&S Cycle "E" carburetor is purpose-built for Harley-Davidson Big Twin and Sportster engines, delivering precise fuel metering and responsive throttle control that carryover stock units simply cannot match. If you're running a performance-built motor...DS0406- SKU:
- DS0406
- Availability:
- Ships Same Business Day
- Weight:
- 6.81 LBS
- BASE COLOR:
- SILVER
- COLOR/FINISH:
- NATURAL
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- FEATURES:
- INCLUDES MANIFOLD
- PRODUCT NAME:
- CARBURETOR
- STYLE:
- BAND-STYLE INTAKE
- STYLE:
- SUPER E
MSRP: $795.95Now: $716.36Was: $795.95
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Carburetor Kits
- Compatibility: Ensure the kit fits your Harley's model (e.g., Big Twin Evo 1993-1999, Twin Cam 1999-2005, XL Sportster 1991-2003, Shovelhead 1966-1978) and engine size (e.g., 80" to 100"). Use the vehicle selector for year-specific matches to avoid throttle or manifold issues.
- Type of Use: For street cruising or touring, opt for Super E kits with 1-7/8" throat for smooth response; high-performance or race builds benefit from HSR 42/45/48 or Super G for maximum power and acceleration in demanding conditions.
- Components and Upgrades: Select kits with carbs, manifolds, air cleaners, cables, and hardware; upgrade to polished or black finishes for style. Focus on smoothbore designs, adjustable accelerator pumps, and high-flow filters for better throttle and mileage.
- Brand and Quality: Choose S&S Cycle for Super E/G kits with proven throttle response or Mikuni for HSR series with race-custom options. Prioritize made-in-USA/Japan quality with chrome/natural/polished finishes for durability and reliability.
- Installation and Cost: Most kits are bolt-on with included hardware for easy DIY setup; prices range from $499.95 for standard carbs to $955.95 for total kits—factor in sales (up to 10% off) and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models do these carburetor kits support? Kits support Big Twin (1993-1999), Twin Cam (1999-2005), XL Sportster (1991-2003), Shovelhead (1966-1978), and more—use the year/make/model filter for exact compatibility, including manifold inclusions.
- How do Super E/G carbs improve performance? They offer excellent throttle response, power gains, and mileage with 1-7/8" throat and 1-9/16" venturi, ideal for engines up to 100-cubic-inch.
- What is typically included in a kit? Most include carbs, manifolds, air cleaners (e.g., K&N), choke cables, hardware, and instructions; check details for polished finishes or race customs.
- Are these kits suitable for custom engines? Yes, HSR 48mm kits are designed for custom/race engines with high-flow features and tuning jets included.
- What if a kit doesn't fit my Harley? Verify engine size, carb type (Super E/G, HSR), and manifold requirements before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related air and fuel parts? Yes—explore jets, rebuild kits, or air cleaners in the Harley air and fuel category to complement your carb upgrade for optimal performance.
