Harley Carburetor Rebuild Kits
Harley-Davidson Carburetor Rebuild Kits at JJ Motorsports
Restore crisp throttle response on your Harley with premium carburetor rebuild kits from JJ Motorsports, featuring high-quality jets, needles, gaskets, and seals for Mikuni HSR 42/45, S&S Super B, and classic CV carbs on Sportster, Big Twin, and Evo models. These complete kits make carb refresh fast and reliable.
Shop Mikuni, Drag Specialties, and S&S Cycle rebuild kits for proven performance. Explore related categories such as Harley air and fuel for jets and air cleaners, or Harley for exhaust and cams to complete your tuning and ride with perfect carburetion.
Top Harley-Davidson Carburetor Rebuild Kits
- Mikuni HSR Series 42/45 Carburetor Rebuild Kit KHS-016 – Full kit for Mikuni HSR42/45 carbs; includes all seals, jets, and needle for total refresh.
- Drag Specialties Carburetor Rebuild Kit 42 Mikuni I03102-0704 – Complete rebuild for 42mm Mikuni HSR; high-quality parts for Evo and Twin Cam Harleys.
- S&S Cycle Super B Carburetor Rebuild Kit 11-2903 – Rebuild kit for S&S Super B carb; restores performance on classic Big Twins.
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!
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- Price
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On Sale
S&S CYCLE Acceleration Pump Diaphragm 11-2282
S&S CYCLE
MSRP: $21.95Now: $19.76Was: $21.95The S&S Cycle acceleration pump diaphragm is a critical wear component that directly impacts your carburetor's throttle response and low-end performance. Over time, diaphragms deteriorate from fuel exposure and engine heat, causing sluggish acceleration...10030045- SKU:
- 10030045
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MODEL:
- SUPER E
- TYPE:
- ACCELERATOR PUMP
- UNITS:
- EACH
- MODEL:
- SUPER G
- PRODUCT NAME:
- DIAPHRAGM
- RIDING STYLE:
- STREET
MSRP: $21.95Now: $19.76Was: $21.95 -
On Sale
S&S CYCLE Plunger Enrichener 11-2343
S&S CYCLE
MSRP: $19.95Now: $17.96Was: $19.95The S&S Cycle Plunger Enrichener 11-2343 delivers precise fuel delivery during cold starts and low-speed operation, eliminating hesitation and rough idle characteristics common in stock carburetors. This meticulously engineered component ensures your...10030047- SKU:
- 10030047
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MODEL:
- SUPER G
- PRODUCT NAME:
- PLUNGER
- MODEL:
- SUPER E
- RIDING STYLE:
- STREET
- TYPE:
- FAST IDLE
- UNITS:
- EACH
MSRP: $19.95Now: $17.96Was: $19.95 -
On Sale
S&S CYCLE Check Ball Spring 11-2392
S&S CYCLE
MSRP: $14.95Now: $13.46Was: $14.95The S&S Cycle Check Ball Spring 11-2392 ensures reliable fuel delivery and prevents backflow in high-performance fuel systems. Whether you're running a stock engine or forced induction setup, this precision-engineered component maintains consistent fuel...10030050- SKU:
- 10030050
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- MODEL:
- SUPER G
- MODEL:
- SUPER E
- PRODUCT NAME:
- SPRING
- TYPE:
- BALL CHECK
MSRP: $14.95Now: $13.46Was: $14.95 -
On Sale
S&S CYCLE Super E and Super G Carburetor Fuel Inlet 11-2465
S&S CYCLE
MSRP: $18.95Now: $17.06Was: $18.95A properly functioning fuel inlet is critical to carburetor performance and engine reliability. The S&S Cycle Super E and Super G Carburetor Fuel Inlet ensures consistent fuel delivery and eliminates flow restrictions that can rob your engine of power...10030052- SKU:
- 10030052
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MODEL:
- SUPER E
- UNITS:
- EACH
- MODEL:
- SUPER G
- RIDING STYLE:
- STREET
- TYPE:
- CARBURETOR
- PRODUCT NAME:
- FUEL INLET
MSRP: $18.95Now: $17.06Was: $18.95 -
On Sale
S&S CYCLE E/G Carburetors Breather Conversion Kit 17-0486
S&S CYCLE
MSRP: $51.95Now: $46.76Was: $51.95A properly sealed crankcase breathing system is essential for maintaining ring seal integrity, reducing blow-by contamination, and extending engine life on high-performance builds. The S&S Cycle E/G Carburetors Breather Conversion Kit eliminates...10030056- SKU:
- 10030056
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- TYPE:
- BREATHER
- UNITS:
- KIT
- PRODUCT NAME:
- CONVERSION KIT
- RIDING STYLE:
- STREET
MSRP: $51.95Now: $46.76Was: $51.95 -
On Sale
S&S CYCLE Stock Intake O-Ring Heads - 10 Pack 16-0244
S&S CYCLE
MSRP: $60.95Now: $54.86Was: $60.95Maintaining proper seal integrity on your S&S intake manifold is critical to preventing vacuum leaks that rob your engine of power and consistency. These OEM-spec O-rings are essential wear items that should be replaced during any manifold service or...10030313- SKU:
- 10030313
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- MODEL:
- STOCK HEADS
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- TYPE:
- INTAKE MANIFOLD
- UNITS:
- 10 PACK
MSRP: $60.95Now: $54.86Was: $60.95 -
On Sale
S&S CYCLE Super E/G Carburetor Bowl 11-2388
S&S CYCLE
MSRP: $98.95Now: $89.06Was: $98.95The S&S Cycle Super E/G Carburetor Bowl delivers reliable fuel delivery and consistent jetting performance for Harley-Davidson big twin engines running premium carburetors. Whether you're rebuilding a carburetor or replacing a worn component, this...10030452- SKU:
- 10030452
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- MODEL:
- SUPER G
- TYPE:
- CARBURETOR
- MODEL:
- SUPER E
- PRODUCT NAME:
- BOWL ONLY
- UNITS:
- EACH
- RIDING STYLE:
- STREET
MSRP: $98.95Now: $89.06Was: $98.95 -
On Sale
S&S CYCLE Master Super B Rebuild Kit 11-2914
S&S CYCLE
MSRP: $105.95Now: $94.46Was: $105.95The S&S Cycle Master Super B Rebuild Kit gives you the precision components needed to restore your Super B to factory specifications or serve as a foundation for performance upgrades. This comprehensive kit eliminates the guesswork of sourcing individual...10030453- SKU:
- 10030453
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- TYPE:
- CARBURETOR
- UNITS:
- EACH
- MODEL:
- SUPER B
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- STREET
MSRP: $105.95Now: $94.46Was: $105.95 -
On Sale
S&S CYCLE Bellows Acceleration Pump Seal 11-2266
S&S CYCLE
MSRP: $9.95Now: $8.96Was: $9.95The S&S CYCLE Bellows Acceleration Pump Seal (11-2266) is an essential replacement component for maintaining consistent fuel delivery and throttle response in your S&S carburetors. Over time, pump seals degrade under heat and fuel exposure, leading to...10030455- SKU:
- 10030455
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- RUBBER
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- BELLOWS SEAL
- COLOR/FINISH:
- BLACK
- TYPE:
- ACCELERATOR PUMP
- UNITS:
- EACH
- RIDING STYLE:
- STREET
MSRP: $9.95Now: $8.96Was: $9.95 -
On Sale
S&S CYCLE Intake Manifold O-Ring 16-0235
S&S CYCLE
MSRP: $11.95Now: $10.76Was: $11.95A deteriorating intake manifold O-ring creates vacuum leaks that compromise air-fuel mixture quality and cause rough idle, hesitation, and performance loss. This OEM-specification replacement seal restores proper manifold sealing without requiring...10030456- SKU:
- 10030456
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- TYPE:
- INTAKE MANIFOLD
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MODEL:
- S&S
- PRODUCT NAME:
- O-RING
MSRP: $11.95Now: $10.76Was: $11.95 -
On Sale
S&S CYCLE Seal Intake Band - '79-'84 16-0245
S&S CYCLE
MSRP: $52.95Now: $47.66Was: $52.95A properly sealed intake tract is foundational to carburetor performance and fuel atomization. The S&S Cycle Seal Intake Band ensures a leak-free connection between your intake manifold and carburetor, eliminating unwanted air infiltration that can cause...10030458- SKU:
- 10030458
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- INTAKE MANIFOLD
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
- UNITS:
- 10 PACK
MSRP: $52.95Now: $47.66Was: $52.95 -
On Sale
S&S CYCLE Super E/Super G Carburetor Lever Enrichener 17-0329
S&S CYCLE
MSRP: $14.95Now: $13.46Was: $14.95Cold-start performance demands a reliable enrichment system, and the S&S Cycle Super E/Super G Carburetor Lever Enrichener delivers precision control over fuel delivery when your engine needs it most. This U.S.-manufactured component ensures smooth...10030459- SKU:
- 10030459
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- ENRICHENER LEVER
- MODEL:
- SUPER G
- RIDING STYLE:
- STREET
- MODEL:
- SUPER E
- UNITS:
- EACH
MSRP: $14.95Now: $13.46Was: $14.95 -
On Sale
S&S CYCLE Bowl Screws - 10-Pack 50-0063
S&S CYCLE
MSRP: $19.95Now: $17.96Was: $19.95Bowl screws are critical fasteners that secure your carburetor bowl to the main body—and a single worn or damaged screw can compromise fuel delivery and engine performance. S&S Cycle's OEM-quality replacement screws ensure a reliable, leak-free seal...10030460- SKU:
- 10030460
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- SCREW
- MODEL:
- SUPER G
- RIDING STYLE:
- STREET
- MODEL:
- SUPER B
- TYPE:
- FLOAT BOWL
- UNITS:
- 10 PACK
- MODEL:
- SUPER E
MSRP: $19.95Now: $17.96Was: $19.95 -
On Sale
S&S CYCLE Super E/ G Bowl Screw - Long 50-0040
S&S CYCLE
MSRP: $6.95Now: $6.26Was: $6.95The S&S Cycle Super E/G Bowl Screw is a critical fastening component that ensures proper sealing and performance in your carburetor assembly. Quality replacement fasteners are essential to prevent fuel leaks, maintain consistent jetting, and avoid costly...10030966- SKU:
- 10030966
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- SCREW
MSRP: $6.95Now: $6.26Was: $6.95 -
On Sale
S&S CYCLE E/G Carburetor Bowl Overflow Hose 19-0263
S&S CYCLE
MSRP: $40.95Now: $36.86Was: $40.95Carburetor overflow conditions can flood your engine and compromise performance, leading to hard starts, fouling, and potential damage. The S&S Cycle E/G Carburetor Bowl Overflow Hose is engineered to safely route excess fuel away from critical engine...10030188- SKU:
- 10030188
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- TYPE:
- FUEL BOWL
- PRODUCT NAME:
- HOSE
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
MSRP: $40.95Now: $36.86Was: $40.95 -
On Sale
S&S CYCLE E/G Carburetor Acceleration Pump Tube O-Ring 50-8096
S&S CYCLE
MSRP: $13.95Now: $12.56Was: $13.95A worn or degraded accelerator pump cap O-ring compromises fuel delivery precision during throttle transitions, directly impacting throttle response and overall engine performance. This genuine S&S Cycle replacement O-ring restores the sealed integrity...10030192- SKU:
- 10030192
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- BLUE
- PRODUCT NAME:
- O-RING
- UNITS:
- 10 PACK
- BASE COLOR:
- BLUE
- MODEL:
- SUPER G
- RIDING STYLE:
- STREET
- TYPE:
- ACCELERATOR PUMP EJECTOR NOZZLE
- MODEL:
- SUPER E
MSRP: $13.95Now: $12.56Was: $13.95 -
On Sale
S&S CYCLE E/G Carburetor Ball Check Acceleration Pump 50-8125
S&S CYCLE
MSRP: $10.95Now: $9.86Was: $10.95A properly functioning acceleration pump is critical to carburetor response and throttle consistency on high-performance engines. The S&S Cycle E/G Carburetor Ball Check Acceleration Pump ensures precise fuel delivery during transition, eliminating...10030194- SKU:
- 10030194
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ACCELERATOR PUMP
- UNITS:
- 10 PACK
- MODEL:
- SUPER G
- PRODUCT NAME:
- CHECK BALL
- MODEL:
- SUPER E
MSRP: $10.95Now: $9.86Was: $10.95 -
On Sale
S&S CYCLE E/G Carburetor Guide Cable 11-2339P
S&S CYCLE
MSRP: $40.95Now: $36.86Was: $40.95Precise throttle response starts with a reliable guide cable that won't stretch, fray, or bind under load. The S&S Cycle E/G Carburetor Guide Cable 11-2339P ensures crisp, consistent throttle control whether you're fine-tuning carburetor settings on the...10030196- SKU:
- 10030196
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MODEL:
- BUTTERFLY
- PRODUCT NAME:
- CABLE GUIDE
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- THROTTLE
MSRP: $40.95Now: $36.86Was: $40.95 -
On Sale
S&S CYCLE Intake Manifold O-Ring 16-0243
S&S CYCLE
MSRP: $61.95Now: $55.76Was: $61.95A worn or damaged intake manifold O-ring compromises your carburetor seal, leading to air leaks that disrupt fuel mixture calibration and cost you horsepower. This genuine S&S Cycle replacement O-ring restores the airtight seal your engine demands,...10030060- SKU:
- 10030060
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- O-RING
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- MODEL:
- S&S MANIFOLD
- TYPE:
- INTAKE MANIFOLD
MSRP: $61.95Now: $55.76Was: $61.95 -
On Sale
S&S CYCLE E and G Carburetors Idle Mixture Screw 11-2378
S&S CYCLE
MSRP: $60.95Now: $54.86Was: $60.95Precise idle mixture tuning is critical to carburettor performance, and a worn or damaged idle mixture screw compromises your engine's stability and throttle response. The S&S Cycle E and G Carburetors Idle Mixture Screw restores factory-spec adjustment...10030085- SKU:
- 10030085
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MODEL:
- SUPER E
- MODEL:
- SUPER G
- RIDING STYLE:
- STREET
- TYPE:
- IDLE MIXTURE
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SCREW
MSRP: $60.95Now: $54.86Was: $60.95
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Carburetor Rebuild Kits
- Compatibility: Ensure the kit fits your Harley's carburetor type (e.g., S&S Super E/G, Keihin CV, Mikuni HSR42/45/48, HS40) and model (e.g., Big Twin 1970-2006, XL 1973-1985, Twin Cam 1999-2006). Use the vehicle selector for year-specific matches to avoid incomplete repairs or performance issues.
- Type of Use: For vintage or stock rebuilds, opt for basic kits with gaskets and jets; performance or modified engines benefit from comprehensive sets including diaphragms, needles, and O-rings for smooth throttle response in street or touring conditions.
- Components and Upgrades: Select kits with gaskets, diaphragms, needles, jets, O-rings, springs, and seals; upgrade to ethanol-resistant materials or brass jets for durability against modern fuels.
- Brand and Quality: Choose S&S Cycle for Super E/G kits, K&L Supply for Keihin CV rebuilds, or Mikuni for HSR/HS40 options. Prioritize high-quality, OEM-matching components for reliable sealing and long-term performance.
- Installation and Cost: Kits are designed for DIY carb overhauls with basic tools; prices range from $24.95 for basic sets to $102.95 for premium options—factor in expert support for fitment and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models and carburetors do these rebuild kits support? Kits support models like Big Twin (1970-2006), XL (1973-1985), Twin Cam (1999-2006), with compatibility for S&S Super E/G, Keihin CV, Mikuni HSR42/45/48, and HS40—use the year/make/model filter for exact matches.
- How do rebuild kits restore carburetor performance? They include components to replace worn seals, jets, and diaphragms, ensuring smooth operation, preventing leaks, and improving throttle response for stock or modified engines.
- What is typically included in a kit? Most kits contain gaskets, diaphragms, needles, jets, O-rings, springs, and seals; check details for specific inclusions like accelerator pump or idle mixture screws.
- Are these kits suitable for ethanol fuels? Yes, many feature ethanol-resistant materials to withstand modern E10 blends without degradation.
- What if a kit doesn't fit my Harley? Verify carb type and model before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related air and fuel parts? Yes—explore air cleaners, fuel filters, or full carbs in the Harley air and fuel category to complement your rebuild for optimal engine efficiency.
