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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On Sale
S&S CYCLE Super G Master Rebuild Kit 11-2924
S&S CYCLE
MSRP: $112.95Now: $101.66Was: $112.95Contains a body rebuild kit, accelerator pump rebuild kit, all new fasteners, springs, idle mixture screw, seat and needle assembly112924- 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: $112.95Now: $101.66Was: $112.95Qty in Cart: 0Quantity:Price:MSRP: $112.95Now: $101.66Was: $112.95Subtotal: -
On Sale
S&S CYCLE Super G Carburetor Rebuild Kit 11-2907
S&S CYCLE
MSRP: $61.95Now: $55.76Was: $61.95Made in the U.S.A.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: $81.95Replacement gaskets, O-rings and components are made from the highest-quality materials available, Rebuild kits are available in master kits, body-only kits and accelerator pump kits, Made in the U.S.A.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: $316.95Sold each10031703- 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: $31.95Sold as a kit10031704- 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: $28.95Sold as a kit10031705- 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: $16.95Sold each10031706- 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: $12.95Made in the U.S.A.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: $12.95Qty in Cart: 0Quantity:Price:MSRP: $12.95Now: $11.66Was: $12.95Subtotal: -
On Sale
S&S CYCLE Super E/Super G Carburetor Throttle Spool 11-2385
S&S CYCLE
MSRP: $23.95Now: $21.56Was: $23.95Sold each10031709- 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: $6.95Throttle shaft washer10031710- 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: $12.95Sold as a 5 pack10031711- 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 washer10031712- 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 -
On Sale
S&S CYCLE Acceleration Pump Lever 11-2376
S&S CYCLE
MSRP: $14.95Now: $13.46Was: $14.95Sold each10031713- SKU:
- 10031713
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- ACTUATOR LEVER
- TYPE:
- PUMP
- UNITS:
- EACH
- RIDING STYLE:
- STREET
MSRP: $14.95Now: $13.46Was: $14.95 -
On Sale
S&S CYCLE Accelerator Pump Spring - 5 Pack 11-3501
S&S CYCLE
MSRP: $14.95Now: $13.46Was: $14.95Made in the U.S.A.10031714- SKU:
- 10031714
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- SUPER E
- PRODUCT NAME:
- SPRING
- TYPE:
- ACCELERATOR PUMP
- MODEL:
- SUPER G
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
MSRP: $14.95Now: $13.46Was: $14.95Qty in Cart: 0Quantity:Price:MSRP: $14.95Now: $13.46Was: $14.95Subtotal: -
On Sale
S&S CYCLE Acceleration Pump Arm 11-2377
S&S CYCLE
MSRP: $8.95Now: $8.06Was: $8.95Sold each10031715- SKU:
- 10031715
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- ACTUATOR ARM
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- PUMP
MSRP: $8.95Now: $8.06Was: $8.95 -
On Sale
S&S CYCLE Speed Idle Screw - 10-Pack 50-0150
S&S CYCLE
MSRP: $13.95Now: $12.56Was: $13.95Sold as a 10 pack10031716- SKU:
- 10031716
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- 10 PACK
- TYPE:
- SLOTTED
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- IDLE SCREW
MSRP: $13.95Now: $12.56Was: $13.95 -
On Sale
S&S CYCLE Acceleration Pump Adjuster Screw - 10-Pack 50-0146
S&S CYCLE
MSRP: $9.95Now: $8.96Was: $9.95Sold as a 10 pack10031717- SKU:
- 10031717
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- FLAT HEAD SCREW
- UNITS:
- 10 PACK
- MATERIAL:
- ZINC PLATED
- RIDING STYLE:
- STREET
- TYPE:
- SLOTTED
MSRP: $9.95Now: $8.96Was: $9.95 -
On Sale
S&S CYCLE Acceleration Pump/Idle Spring - 10 Pack 11-2053
S&S CYCLE
MSRP: $12.95Now: $11.66Was: $12.95Made in the U.S.A.10031718- SKU:
- 10031718
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- MODEL:
- S&S
- TYPE:
- ACCELERATOR PUMP
- PRODUCT NAME:
- IDLE SPRING
MSRP: $12.95Now: $11.66Was: $12.95 -
On Sale
S&S CYCLE Acceleration Pump Plunger Nut - 10-Pack 11-2372
S&S CYCLE
MSRP: $19.95Now: $17.96Was: $19.95Sold as a 10 pack10031719- SKU:
- 10031719
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- TYPE:
- ACCELERATOR PUMP
- PRODUCT NAME:
- PLUNGER NUTS
MSRP: $19.95Now: $17.96Was: $19.95Qty in Cart: 0Quantity:Price:MSRP: $19.95Now: $17.96Was: $19.95Subtotal: -
On Sale
S&S CYCLE Acceleration Pump Plunger Spring - 10 Pack 11-2359
S&S CYCLE
MSRP: $15.95Now: $14.36Was: $15.95Made in the U.S.A.10031720- SKU:
- 10031720
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- SUPER E
- MODEL:
- SUPER G
- PRODUCT NAME:
- PLUNGER SPRING
- TYPE:
- ACCELERATOR PUMP
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
MSRP: $15.95Now: $14.36Was: $15.95
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.
