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!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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DRAG SPECIALTIES Carburetor Rebuild Kit - 42 Mikuni I03102-0704
DRAG SPECIALTIES
$62.01A properly tuned carburetor is the foundation of consistent engine performance, and worn internal components will compromise fuel atomization, throttle response, and reliability. This complete rebuild kit gives you everything needed to restore your...10030293- SKU:
- 10030293
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- CARBURETOR
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- STREET
$62.01 -
On Sale
S&S CYCLE Acceleration Pump Push Rod 11-2373
S&S CYCLE
MSRP: $11.95Now: $10.76Was: $11.95The S&S Cycle Acceleration Pump Push Rod is a precision-engineered component designed to optimize fuel delivery response during aggressive throttle transitions. Whether you're fine-tuning a carbureted engine for consistent performance or rebuilding your...10031727- SKU:
- 10031727
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- PUSHROD
- TYPE:
- PUMP
MSRP: $11.95Now: $10.76Was: $11.95Qty in Cart: 0Quantity:Price:MSRP: $11.95Now: $10.76Was: $11.95Subtotal: -
DRAG SPECIALTIES Tune Up Kit - '70-E'78 Big Twin/XL MC-DRAG013
DRAG SPECIALTIES
$19.21A reliable ignition system is the foundation of consistent engine performance, and this DRAG Specialties tune-up kit delivers OEM-spec components engineered specifically for your classic Big Twin or XL Sportster. Whether you're rebuilding after a season...DS242026- SKU:
- DS242026
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- TUNEUP KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$19.21 -
DRAG SPECIALTIES Keihin Carburetor Gas Inlet - '76-'06 T03-0070
DRAG SPECIALTIES
$11.72A reliable fuel inlet fitting is the foundation of consistent carburetor performance, and this solid brass Keihin gas inlet delivers the precision fuel delivery your engine demands. Whether you're running a stock rebuild or a high-performance setup, a...10030257- SKU:
- 10030257
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- FUEL INLET FITTING
- RIDING STYLE:
- STREET
- MATERIAL:
- BRASS
- TYPE:
- CARBURETOR
- UNITS:
- EACH
$11.72 -
DRAG SPECIALTIES Carburetor Rebuild Kit - '76-'89 Keihen 03-0022A
DRAG SPECIALTIES
$29.91A worn or leaking carburetor will cost you consistency on the track and reliability on the street. This complete rebuild kit gives you everything needed to restore your Keihin carb to factory specifications, eliminating fuel delivery issues and ensuring...10030291- SKU:
- 10030291
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- FOR BUTTERFLY CARBURETORS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- STREET
- TYPE:
- CARBURETOR
- UNITS:
- KIT
$29.91 -
DRAG SPECIALTIES Linkert Carburetor Rebuild Kit I03-0100
DRAG SPECIALTIES
$87.69A carburetor is only as good as its internal components, and worn seals, gaskets, and needles will rob your engine of consistent fuel atomization and throttle response. This Linkert rebuild kit restores your carburetor to factory specifications,...10030294- SKU:
- 10030294
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- CARBURETOR
- UNITS:
- EACH
$87.69 -
DRAG SPECIALTIES Bendix Carburetor Rebuild Kit 012608
DRAG SPECIALTIES
$37.40A carburetor that's running lean, surging, or flooding will kill your engine's performance and reliability—and a complete rebuild kit eliminates guesswork by providing every gasket, seal, and component you need in one package. The DRAG SPECIALTIES Bendix...10030166- SKU:
- 10030166
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- TYPE:
- CARBURETOR
- PRODUCT NAME:
- REPAIR KIT
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$37.40 -
On Sale
S&S CYCLE Super B Carburetor Rebuild Kit 11-2903
S&S CYCLE
MSRP: $61.95Now: $55.76Was: $61.95A carburetor rebuild kit is essential maintenance for keeping your S&S Cycle engine running at peak performance. Over time, fuel varnish and debris accumulate in the jets, passages, and seals—restricting fuel flow and causing rough idle, hesitation, and...112903- SKU:
- 112903
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PRODUCT NAME:
- REPAIR KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- MODEL:
- SUPER B
- TYPE:
- CARBURETOR
MSRP: $61.95Now: $55.76Was: $61.95 -
On Sale
S&S CYCLE Super G Master Rebuild Kit 11-2924
S&S CYCLE
MSRP: $105.95Now: $101.66Was: $105.95Carburetor performance directly impacts throttle response, fuel atomization, and overall engine efficiency—and wear on internal components compounds these issues over time. The S&S Cycle Super G Master Rebuild Kit gives you factory-fresh carburetor...112924- SKU:
- 112924
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- MODEL:
- SUPER G
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- CARBURETOR
MSRP: $105.95Now: $101.66Was: $105.95 -
On Sale
S&S CYCLE Super G Carburetor Rebuild Kit 11-2907
S&S CYCLE
MSRP: $61.95Now: $55.76Was: $61.95A worn or sluggish carburetor can sabotage engine performance and fuel economy, leaving you guessing at the root cause of poor throttle response. The S&S Cycle Super G Carburetor Rebuild Kit restores your carb to factory specifications with OEM-quality...DS289112- SKU:
- DS289112
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- STREET
- TYPE:
- CARBURETOR
- UNITS:
- KIT
- MODEL:
- SUPER G
MSRP: $61.95Now: $55.76Was: $61.95 -
On Sale
S&S CYCLE Super E Carburetor Spacer/Insulator Block 16-0057
S&S CYCLE
MSRP: $81.95Now: $73.76Was: $81.95Carburetor spacer blocks are critical for managing heat transfer and optimizing fuel atomization in high-performance applications. The S&S Cycle Super E Carburetor Spacer/Insulator Block maintains consistent fuel temperature and prevents vapor lock,...160057- SKU:
- 160057
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPACER BLOCK
- INSULATOR THICKNESS IMPERIAL:
- 1.00'
- MODEL:
- SUPER E
- TYPE:
- INSULATOR
- UNITS:
- EACH
MSRP: $81.95Now: $73.76Was: $81.95Qty in Cart: 0Quantity:Price:MSRP: $81.95Now: $73.76Was: $81.95Subtotal: -
On Sale
S&S CYCLE Super G Carburetor Body 11-2391
S&S CYCLE
MSRP: $316.95Now: $285.26Was: $316.95The S&S Cycle Super G Carburetor Body delivers the precision fuel delivery and responsive throttle control that serious riders demand. Whether you're tuning a high-displacement engine or maximizing fuel efficiency on a custom build, this CNC-machined...10031703- SKU:
- 10031703
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- CARBURETOR SIZE METRIC:
- 52.39 MM
- MODEL:
- SUPER G
- PRODUCT NAME:
- CARB BODY ASSEMBLY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $316.95Now: $285.26Was: $316.95 -
On Sale
S&S CYCLE Super E Carburetor Throttle Shaft 11-2383
S&S CYCLE
MSRP: $31.95Now: $28.76Was: $31.95A worn or damaged throttle shaft compromises fuel delivery precision and throttle response, directly impacting engine performance and rideability. The S&S Cycle Super E Carburetor Throttle Shaft (11-2383) restores smooth, consistent throttle operation...10031704- SKU:
- 10031704
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- THROTTLE SHAFT
- MODEL:
- SUPER E
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $31.95Now: $28.76Was: $31.95Qty in Cart: 0Quantity:Price:MSRP: $31.95Now: $28.76Was: $31.95Subtotal: -
On Sale
S&S CYCLE Super G Carburetor Throttle Shaft 11-2483
S&S CYCLE
MSRP: $28.95Now: $26.06Was: $28.95A worn or damaged throttle shaft can create unpredictable idle characteristics and fuel delivery inconsistencies that compromise engine performance and rideability. The S&S Cycle Super G Carburetor Throttle Shaft restores precise throttle response and...10031705- SKU:
- 10031705
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MODEL:
- SUPER G
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- THROTTLE SHAFT
- UNITS:
- EACH
MSRP: $28.95Now: $26.06Was: $28.95 -
On Sale
S&S CYCLE Super E Carburetor Throttle Plate 11-2055
S&S CYCLE
MSRP: $16.95Now: $15.26Was: $16.95A properly functioning throttle plate is critical to carburetor response and fuel delivery consistency. The S&S Cycle Super E throttle plate ensures smooth, predictable throttle modulation by maintaining precise valve action and minimizing air leakage at...10031706- SKU:
- 10031706
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MODEL:
- SUPER E
- UNITS:
- EACH
- PRODUCT NAME:
- THROTTLE PLATE
- RIDING STYLE:
- STREET
MSRP: $16.95Now: $15.26Was: $16.95Qty in Cart: 0Quantity:Price:MSRP: $16.95Now: $15.26Was: $16.95Subtotal: -
On Sale
S&S CYCLE Throttle Return Spring - 5 Pack 11-3502
S&S CYCLE
MSRP: $12.95Now: $11.66Was: $12.95A reliable throttle return spring is critical to safe engine operation—it ensures your throttle plate returns to idle position consistently, whether you're on the track or the street. S&S Cycle's OEM-quality replacement springs eliminate the risk of...10031708- SKU:
- 10031708
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- SUPER E
- MODEL:
- SUPER G
- PRODUCT NAME:
- RETURN SPRING
- RIDING STYLE:
- STREET
- TYPE:
- THROTTLE
- UNITS:
- 5 PACK
MSRP: $12.95Now: $11.66Was: $12.95 -
On Sale
S&S CYCLE Super E/Super G Carburetor Throttle Spool 11-2385
S&S CYCLE
MSRP: $23.95Now: $21.56Was: $23.95Precision throttle control is fundamental to consistent engine performance and smooth power delivery on Super E and Super G carburetors. This OEM S&S Cycle throttle spool ensures accurate fuel metering response and eliminates hesitation or surging during...10031709- SKU:
- 10031709
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- S&S/E AND G
- UNITS:
- EACH
- PRODUCT NAME:
- SPOOL
- RIDING STYLE:
- STREET
- TYPE:
- THROTTLE
MSRP: $23.95Now: $21.56Was: $23.95 -
On Sale
S&S CYCLE Throttle Shaft Washer Lock 50-7031
S&S CYCLE
MSRP: $6.95Now: $6.26Was: $6.95A secure throttle shaft is non-negotiable in high-performance applications where vibration and engine stress can loosen critical carburetor components. The S&S Cycle Throttle Shaft Washer Lock prevents unwanted throttle cable slack and erratic idle...10031710- SKU:
- 10031710
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- TYPE:
- THROTTLE SHAFT
- UNITS:
- EACH
- PRODUCT NAME:
- LOCK WASHER
- RIDING STYLE:
- STREET
MSRP: $6.95Now: $6.26Was: $6.95 -
On Sale
S&S CYCLE Throttle Shaft Nut - 5-Pack 11-2363
S&S CYCLE
MSRP: $12.95Now: $11.66Was: $12.95The throttle shaft nut is a critical fastener that secures your carburetor's throttle mechanism, ensuring precise throttle response and preventing unwanted movement under acceleration or vibration. S&S Cycle's OEM-quality replacement nuts eliminate the...10031711- SKU:
- 10031711
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- TYPE:
- THROTTLE SHAFT
- PRODUCT NAME:
- NUT SET
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
MSRP: $12.95Now: $11.66Was: $12.95 -
On Sale
S&S CYCLE Throttle Shaft Washer - Nylon - 10-Pack 50-7072
S&S CYCLE
MSRP: $12.95Now: $11.66Was: $12.95Throttle shaft washers are critical wear items that prevent metal-to-metal friction and binding in your carburetor or throttle body assembly. Over time, stock washers wear down, causing sluggish throttle response and potential damage to precision...10031712- SKU:
- 10031712
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- TYPE:
- THROTTLE SHAFT
- UNITS:
- 10 PACK
- PRODUCT NAME:
- FLAT WASHER
- RIDING STYLE:
- STREET
MSRP: $12.95Now: $11.66Was: $12.95
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.
