Harley Carburetor Main Jets
Harley-Davidson Carburetor Main Jets at JJ Motorsports
Tune your Harley's carb perfectly with premium main and intermediate jets from JJ Motorsports, designed for Keihin CV, S&S, and Mikuni carbs on Sportster, Big Twin, Evo, and Twin Cam models. These precision brass jets deliver accurate fuel metering for crisp throttle response and maximum power.
Shop EBC and S&S Cycle carburetor jets for proven reliability. Explore related categories such as Harley air and fuel for rebuild kits and air cleaners, or Harley for exhaust and cams to complete your carb tuning.
Top Harley-Davidson Carburetor Main Jets
- EBC Keihin Harley-Davidson Assortment Jet Kit HDJK12 – 12-piece main jet assortment for Keihin CV carbs; perfect for dyno tuning and altitude changes.
- S&S Cycle Main Jet .072 11-7236 – .072 main jet for S&S Super E/G carbs; ideal for performance builds.
- S&S Cycle Intermediate Jet .0295 11-7110 – .0295 intermediate jet for S&S carbs; fine-tunes mid-range for smoother power delivery.
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
-
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 -
CYCLE CRAFT CV Carburetor Main Jet - #240 20773
CYCLE CRAFT
$12.60A properly sized main jet is critical for maintaining optimal fuel-air mixture across your engine's mid-to-high RPM range, directly impacting throttle response and overall performance. The CYCLE CRAFT #240 jet delivers precision Japanese engineering to...10060282- SKU:
- 10060282
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MATERIAL:
- BRASS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- JET SIZE:
- 240
- UNITS:
- 5 PACK
$12.60Qty in Cart: 0Quantity:Price:$12.60Subtotal: -
EBC Keihin Harley/Davidson Assortment Jet Kit HDJK12
EBC
$64.67Carburetor tuning is critical to achieving proper fuel delivery across your Harley's entire RPM range, and factory jets often leave performance on the table. The EBC Keihin Harley/Davidson Assortment Jet Kit HDJK12 gives you precise control over fuel...10060288- SKU:
- 10060288
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- HEAD DIAMETER METRIC:
- 7.00 MM
- JET SIZE:
- 190
- JET SIZE:
- 205
- JET SIZE:
- 220
- TYPE:
- MAIN
- JET SIZE:
- 180
- JET SIZE:
- 185
- MATERIAL:
- BRASS
- JET SIZE:
- 160
- JET SIZE:
- 165
- JET SIZE:
- 195
- JET SIZE:
- 200
- OVERALL LENGTH METRIC:
- 8.00 MM
- HEAD TYPE:
- SLOTTED
- JET SIZE:
- 170
- JET SIZE:
- 175
- JET SIZE:
- 210
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$64.67 -
EBC Carburetor Jet Kit - Harley-Davidson - 2-Pack EBC424-27-165
EBC
$4.79Carburetor tuning directly impacts your engine's fuel atomization, throttle response, and overall reliability—especially critical in performance applications where stock jetting falls short. The EBC Carburetor Jet Kit delivers flow-calibrated precision...10060289- SKU:
- 10060289
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OVERALL LENGTH METRIC:
- 8.00 MM
- PRODUCT NAME:
- MAIN JET
- RIDING STYLE:
- STREET
- JET SIZE:
- 165
- MATERIAL:
- BRASS
- MODEL:
- KEIHIN
- TYPE:
- CARBURETOR
- UNITS:
- 2 PACK
- HEAD DIAMETER METRIC:
- 7.00 MM
$4.79 -
EBC Carburetor Jet Kit - Harley-Davidson - 2-Pack EBC424-27-170
EBC
$4.79Carburetor tuning directly impacts throttle response, fuel efficiency, and overall engine performance—and stock jets often can't accommodate modifications like air intake upgrades or altitude changes. The EBC Carburetor Jet Kit delivers flow-calibrated...10060290- SKU:
- 10060290
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- JET SIZE:
- 170
- OVERALL LENGTH METRIC:
- 8.00 MM
- RIDING STYLE:
- STREET
- MODEL:
- KEIHIN
- TYPE:
- CARBURETOR
- UNITS:
- 2 PACK
- HEAD DIAMETER METRIC:
- 7.00 MM
- MATERIAL:
- BRASS
- PRODUCT NAME:
- MAIN JET
$4.79 -
EBC Carburetor Jet Kit - Harley-Davidson - 2-Pack EBC424-27-175
EBC
$4.79Precise fuel metering is critical to carburetor performance, and worn or incorrectly sized jets will rob your Harley of throttle response and fuel efficiency. The EBC Carburetor Jet Kit delivers flow-calibrated brass jets engineered to exact...10060291- SKU:
- 10060291
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- JET SIZE:
- 175
- OVERALL LENGTH METRIC:
- 8.00 MM
- PRODUCT NAME:
- MAIN JET
- RIDING STYLE:
- STREET
- MATERIAL:
- BRASS
- MODEL:
- KEIHIN
- TYPE:
- CARBURETOR
- UNITS:
- 2 PACK
- HEAD DIAMETER METRIC:
- 7.00 MM
$4.79Qty in Cart: 0Quantity:Price:$4.79Subtotal: -
EBC Carburetor Jet Kit - Harley-Davidson - 2-Pack EBC424-27-180
EBC
$4.79A lean-running carburetor demands precise fuel delivery at every throttle position—mismatched jets rob your Harley of power and create unpredictable performance. The EBC Carburetor Jet Kit delivers flow-calibrated brass jets engineered to restore optimal...10060292- SKU:
- 10060292
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD DIAMETER METRIC:
- 7.00 MM
- PRODUCT NAME:
- MAIN JET
- RIDING STYLE:
- STREET
- JET SIZE:
- 180
- MATERIAL:
- BRASS
- TYPE:
- CARBURETOR
- MODEL:
- KEIHIN
- UNITS:
- 2 PACK
- OVERALL LENGTH METRIC:
- 8.00 MM
$4.79 -
EBC Carburetor Jet Kit - Harley-Davidson - 2-Pack EBC424-27-195
EBC
$4.79Proper jetting is critical for optimal carburetor performance, fuel efficiency, and throttle response on your Harley-Davidson. Stock jets often compromise peak power or create lean-running conditions that damage engines. The EBC Carburetor Jet Kit...10060295- SKU:
- 10060295
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD DIAMETER METRIC:
- 7.00 MM
- JET SIZE:
- 195
- MODEL:
- KEIHIN
- RIDING STYLE:
- STREET
- UNITS:
- 2 PACK
- MATERIAL:
- BRASS
- OVERALL LENGTH METRIC:
- 8.00 MM
- PRODUCT NAME:
- MAIN JET
- TYPE:
- CARBURETOR
$4.79Qty in Cart: 0Quantity:Price:$4.79Subtotal: -
EBC Carburetor Jet Kit - Harley-Davidson - 2-Pack EBC424-27-200
EBC
$4.79Carburetor tuning is critical for extracting consistent performance from your Harley-Davidson engine, and factory jets often leave power on the table. This EBC 2-pack delivers flow-calibrated precision that eliminates rich running conditions and...10060296- SKU:
- 10060296
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OVERALL LENGTH METRIC:
- 8.00 MM
- RIDING STYLE:
- STREET
- JET SIZE:
- 200
- MODEL:
- KEIHIN
- UNITS:
- 2 PACK
- HEAD DIAMETER METRIC:
- 7.00 MM
- MATERIAL:
- BRASS
- PRODUCT NAME:
- MAIN JET
- TYPE:
- CARBURETOR
$4.79 -
EBC Carburetor Jet Kit - Harley-Davidson - 2-Pack EBC424-27-185
EBC
$4.79Running a lean or rich fuel mixture robs your Harley of throttle response, fuel efficiency, and reliability—especially if you've modified your intake or exhaust. The EBC Carburetor Jet Kit delivers precision-calibrated fuel flow to match your engine's...10060293- SKU:
- 10060293
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD DIAMETER METRIC:
- 7.00 MM
- PRODUCT NAME:
- MAIN JET
- JET SIZE:
- 185
- MATERIAL:
- BRASS
- TYPE:
- CARBURETOR
- OVERALL LENGTH METRIC:
- 8.00 MM
- MODEL:
- KEIHIN
- RIDING STYLE:
- STREET
- UNITS:
- 2 PACK
$4.79 -
YOST PERFORMANCE CV Carburetor Jet - 195-220 '88-'06 Big Twin/XL JP2
YOST PERFORMANCE
$23.95Carburetor jetting is the foundation of proper fuel delivery and engine performance—get it wrong, and you're leaving horsepower on the table or risking a lean-running engine. The YOST Performance CV Carburetor Jet Kit removes the guesswork by providing...DS289186- SKU:
- DS289186
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- JET KIT
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- UNITS:
- KIT
$23.95Qty in Cart: 0Quantity:Price:$23.95Subtotal: -
On Sale
S&S CYCLE Main Jet - .070" 11-7235
S&S CYCLE
MSRP: $50.95Now: $45.86Was: $50.95Proper jetting is the foundation of carburetor tuning—get it wrong, and you're leaving power on the table while risking engine damage. The S&S Cycle Main Jet .070" is engineered for precise fuel delivery across stock and modified engines, ensuring...DS72070- SKU:
- DS72070
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- FEATURES:
- FOR S&S CARBURETORS
- JET SIZE:
- 0.070
- UNITS:
- 5 PACK
- TYPE:
- MAIN
MSRP: $50.95Now: $45.86Was: $50.95 -
On Sale
S&S CYCLE Main Jet - .072" 11-7236
S&S CYCLE
MSRP: $50.95Now: $45.86Was: $50.95Proper jetting is foundational to carburetor tuning—it directly impacts fuel atomization, throttle response, and engine efficiency across your power band. The S&S Cycle Main Jet .072" is engineered for stock and moderate performance engines, giving you...DS72072- SKU:
- DS72072
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- FEATURES:
- FOR S&S CARBURETORS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- JET SIZE:
- 0.072
- UNITS:
- 5 PACK
MSRP: $50.95Now: $45.86Was: $50.95 -
On Sale
S&S CYCLE Main Jet - .076" 11-7238
S&S CYCLE
MSRP: $50.95Now: $45.86Was: $50.95Proper jetting is fundamental to carburetor tuning—get it wrong, and you're leaving power on the table or risking engine damage from running too lean. The S&S Cycle Main Jet .076" (11-7238) is engineered for stock and performance engines, giving you the...DS72076- SKU:
- DS72076
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- UNITS:
- 5 PACK
- FEATURES:
- FOR S&S CARBURETORS
- JET SIZE:
- 0.076
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
MSRP: $50.95Now: $45.86Was: $50.95 -
On Sale
S&S CYCLE Main Jet - .078" 11-7239
S&S CYCLE
MSRP: $50.95Now: $45.86Was: $50.95Proper jetting is fundamental to carburetor performance, and the S&S Cycle Main Jet .078" delivers the precise fuel metering your engine needs for optimal power delivery and throttle response. Whether you're running a stock application or a modified...DS72078- SKU:
- DS72078
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- JET SIZE:
- 0.078
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- JET
- TYPE:
- MAIN
- FEATURES:
- FOR S&S CARBURETORS
- UNITS:
- 5 PACK
MSRP: $50.95Now: $45.86Was: $50.95 -
On Sale
S&S CYCLE Main Jet - .080" 11-7240
S&S CYCLE
MSRP: $50.95Now: $45.86Was: $50.95Precise fuel metering is the foundation of reliable engine performance, and this S&S Cycle main jet delivers the accurate atomization your carburetor demands. Whether you're dialing in a stock build or optimizing a modified engine, the .080" orifice...DS72080- SKU:
- DS72080
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- FEATURES:
- FOR S&S CARBURETORS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- JET SIZE:
- 0.080
- UNITS:
- 5 PACK
MSRP: $50.95Now: $45.86Was: $50.95 -
On Sale
S&S CYCLE Intermediate Jet - .031 11-7111
S&S CYCLE
MSRP: $40.95Now: $36.86Was: $40.95Proper jetting is the foundation of reliable engine performance, and running the wrong jet size costs you power, efficiency, and engine longevity. The S&S Cycle Intermediate Jet .031 is engineered for stock and performance engines that need precise fuel...DS94031- SKU:
- DS94031
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- FEATURES:
- FOR S&S CARBURETORS
- PRODUCT NAME:
- JET
- TYPE:
- INTERMEDIATE
- MODEL:
- S&S
- UNITS:
- 3 PACK
- JET SIZE IMPERIAL:
- 0.031'
- RIDING STYLE:
- STREET
MSRP: $40.95Now: $36.86Was: $40.95 -
On Sale
S&S CYCLE Intermediate Jet - .033 11-7113
S&S CYCLE
MSRP: $40.95Now: $36.86Was: $40.95Precise fuel metering is critical to engine performance, and an undersized jet will cost you horsepower and throttle response. The S&S CYCLE Intermediate Jet (.033) is engineered for carburetor tuning on stock and modified engines, delivering the fuel...DS94033- SKU:
- DS94033
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- FEATURES:
- FOR S&S CARBURETORS
- TYPE:
- INTERMEDIATE
- MODEL:
- S&S
- JET SIZE IMPERIAL:
- 0.033'
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- UNITS:
- 3 PACK
MSRP: $40.95Now: $36.86Was: $40.95 -
On Sale
S&S CYCLE Low Range Jet Kit 11-7270
S&S CYCLE
MSRP: $71.95Now: $64.76Was: $71.95Proper jetting is the foundation of carburetor performance—without it, you're leaving horsepower on the table and risking lean-condition damage. The S&S Cycle Low Range Jet Kit 11-7270 gives you the precise needle and jet combinations needed to dial in...DS0450- SKU:
- DS0450
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- FEATURES:
- FOR S&S CARBURETORS
- MATERIAL:
- BRASS
- UNITS:
- KIT
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- TYPE:
- LOW RANGE
MSRP: $71.95Now: $64.76Was: $71.95 -
On Sale
S&S CYCLE Main Jet - .062" 11-7231
S&S CYCLE
MSRP: $50.95Now: $45.86Was: $50.95Precise carburetor jetting is fundamental to maximizing fuel delivery and engine performance across a range of operating conditions. The S&S Cycle Main Jet (.062") is engineered to deliver consistent air-fuel mixture tuning for both stock and modified...DS72062- SKU:
- DS72062
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- JET
- TYPE:
- MAIN
- FEATURES:
- FOR S&S CARBURETORS
- JET SIZE:
- 0.062
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
MSRP: $50.95Now: $45.86Was: $50.95
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Carburetor Main Jets
- Compatibility: Ensure jets fit your Harley's carburetor type (e.g., Keihin CV, S&S Super E/G, Mikuni HSR42/45/48, HS40) and model (e.g., Big Twin 1988-2006, Sportster, Evo, Twin Cam). Use the vehicle selector for year-specific matches to avoid tuning or flow issues.
- Type of Use: For stock or performance tuning, select main jets (sizes 160-220, .062"-.080") for high-RPM fuel; intermediate jets (.0295"-.033") suit low-range adjustments; assortment kits are ideal for dyno testing or altitude changes in street or touring conditions.
- Components and Upgrades: Choose individual jets, 5-packs, or assortment kits; upgrade to extension kits for air bubble prevention. Focus on precision-machined brass for accurate metering and improved throttle response/power.
- Brand and Quality: Opt for S&S Cycle for Super E/G jets, EBC for Keihin assortment kits, MIKUNI for HSR extensions, CYCLE CRAFT for brass main jets, or YOST PERFORMANCE for 195-220 kits. Prioritize Japan/USA-made brass for durability and consistent flow.
- Installation and Cost: Jets are simple swaps for DIY tuning; kits include multiple sizes for convenience. Prices range from $4.79 for 2-packs to $64.67 for assortments—factor in sales (up to 10% off) and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models and carburetors do these main jets support? Jets support models like Big Twin (1988-2006), Sportster, Evo, Twin Cam, with compatibility for Keihin CV, S&S Super E/G, Mikuni HSR—use the year/make/model filter for exact matches.
- How do main jets improve carburetor performance? They allow precise fuel metering for better throttle response, power delivery, and mid-range smoothness, especially in modified or altitude-varying setups.
- What is typically included in a jet kit? Assortment kits like EBC HDJK12 include 12 main jets; 5-packs (S&S, CYCLE CRAFT) for specific sizes; extensions (MIKUNI) prevent bubbles.
- Are these jets durable with modern fuels? Yes, precision-machined brass construction ensures reliability and flow calibration against ethanol blends.
- What if a jet size doesn't fit my Harley? Verify carb type and size 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 rebuild kits, air cleaners, or carbs in the Harley air and fuel category to complement your jet upgrade for optimal tuning.
