Street Bike Carburertor Main Jets
Street Bike Carburetor Main Jets at JJ Motorsports
Tune your street bike's carb precisely with premium Mikuni and EBC main/pilot jets from JJ Motorsports, available in convenient 4-packs for accurate fuel metering and optimal performance on Suzuki GSX-R, Honda CBR, Kawasaki ZX, Yamaha R-series, and classic carbureted models.
Shop Mikuni and EBC carburetor jets for OEM-quality brass construction and reliable tuning. Explore related categories such as street bike air and fuel for rebuild kits and needles, or street bike for exhaust and brakes to complete your carb refresh and achieve crisp throttle response on every ride.
Top Street Bike Carburetor Main Jets
- Mikuni Main Jet 4-Pack N100604-152.5 – Size 152.5 main jets; perfect for fine-tuning high-RPM performance on GSX-R and CBR models.
- Mikuni Pilot Jet 4-Pack VM28/486-15 – Size 15 pilot jets; essential for smooth idle and low-speed response on Yamaha R6 and Kawasaki ZX.
- EBC Mikuni-Style Carburetor Jet 4-Pack HJ135-4 – Size 135 main jets; affordable Mikuni-compatible pack for classic street bike tuning.
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 Main Jet - 4-Pack N100604-1025
MIKUNI
$5.20Precise jetting is the foundation of carburetor performance—get it wrong, and you're leaving horsepower on the table and risking engine damage. This 4-pack of Mikuni main jets gives you the flexibility to dial in your air-fuel mixture across a range of...10060335- SKU:
- 10060335
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- JET SIZE:
- 102.5
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- UNITS:
- 4 PACK
- HEAD TYPE:
- SLOTTED
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- UTV
$5.20 -
MIKUNI Main Jet - 4-Pack N100604-1525
MIKUNI
$14.55Jetting is the foundation of carburetor tuning—get it wrong, and you're leaving power on the table and risking engine damage. This 4-pack of Mikuni main jets gives you the flexibility to dial in your air-fuel ratio across different riding conditions,...KN1006041525- SKU:
- KN1006041525
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- TYPE:
- MAIN
- UNITS:
- 4 PACK
- HEAD TYPE:
- SLOTTED
- JET SIZE:
- 152.5
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- JET
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
$14.55 -
MIKUNI Main Jet - 4-Pack N100604-210
MIKUNI
$5.20Proper jetting is fundamental to carburetor tuning—it directly impacts fuel delivery, throttle response, and engine performance across the RPM band. This 4-pack of Mikuni main jets gives you the flexibility to dial in your air-fuel mixture for optimal...10060247- SKU:
- 10060247
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD TYPE:
- SLOTTED
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- JET SIZE:
- 210
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- RIDING STYLE:
- ATV
- UNITS:
- 4 PACK
- RIDING STYLE:
- SNOW
$5.20 -
MIKUNI Main Jet - 4-Pack N100604-140
MIKUNI
$14.55Fine-tuning your air-fuel mixture is critical to extracting maximum performance and throttle response from your Mikuni carburetor. A properly sized main jet directly impacts mid-range power delivery and ensures consistent jetting across varying altitudes...KN100604140- SKU:
- KN100604140
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- UNITS:
- 4 PACK
- HEAD TYPE:
- SLOTTED
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- RIDING STYLE:
- UTV
- JET SIZE:
- 140
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
$14.55 -
MIKUNI Main Jet - 4-Pack N100604-1425
MIKUNI
$14.55Precise jetting is the foundation of carburetor tuning—too rich and you lose power while fouling plugs, too lean and you risk engine damage. These OEM Mikuni main jets give you the control to dial in your air-fuel ratio for peak performance across your...KN1006041425- SKU:
- KN1006041425
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- TYPE:
- MAIN
- UNITS:
- 4 PACK
- PRODUCT NAME:
- JET
- HEAD TYPE:
- SLOTTED
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- JET SIZE:
- 142.5
- RIDING STYLE:
- ATV
$14.55 -
MIKUNI Main Jet - 4-Pack N100604-145
MIKUNI
$14.55Proper jetting is fundamental to carburetor tuning—it directly impacts fuel delivery, throttle response, and overall engine performance. If your Mikuni carburetor is running lean or rich, a precision main jet swap is often the quickest path to optimal...KN100604145- SKU:
- KN100604145
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- HEAD TYPE:
- SLOTTED
- JET SIZE:
- 145
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- RIDING STYLE:
- SNOW
- UNITS:
- 4 PACK
- RIDING STYLE:
- ATV
$14.55 -
MIKUNI Main Jet - 4-Pack N100604-1575
MIKUNI
$5.20Jetting is everything when it comes to carburetor performance—get it wrong and you're leaving horsepower on the table or running lean. This 4-pack of Mikuni main jets gives you the flexibility to dial in your air-fuel ratio precisely, whether you're...KN1006041575- SKU:
- KN1006041575
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD TYPE:
- SLOTTED
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- UNITS:
- 4 PACK
- JET SIZE:
- 157.5
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
$5.20 -
MIKUNI Pilot Jet - 4-Pack VM28/486-15
MIKUNI
$5.20Precise idle and low-throttle response depend on a properly-sized pilot jet, and running the wrong specification will cause flat spots, hesitation, or fouling plugs. This OEM-quality 4-pack from Mikuni ensures you have the correct jet on hand for tuning...KVM2848615- SKU:
- KVM2848615
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- HEAD DIAMETER METRIC:
- 5.00 MM
- JET SIZE:
- 15
- MATERIAL:
- BRASS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- 4 PACK
- TYPE:
- PILOT
- OVERALL LENGTH METRIC:
- 27.80 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$5.20 -
MIKUNI Pilot Jet - 4-Pack VM28/486-17.5
MIKUNI
$5.20Pilot jets are critical for low-throttle engine response and cold-start performance—a worn or incorrect jet size creates hesitation, poor fuel economy, and unreliable idling. This OEM-spec 4-pack from Mikuni ensures you have fresh jets on hand for...KVM28486175- SKU:
- KVM28486175
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- HEAD DIAMETER METRIC:
- 5.00 MM
- JET SIZE:
- 17.5
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- TYPE:
- PILOT
- UNITS:
- 4 PACK
- OVERALL LENGTH METRIC:
- 27.80 MM
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$5.20 -
MIKUNI Pilot Jet - 4-Pack VM28/486-20
MIKUNI
$14.55A properly sized pilot jet is critical for smooth idle quality and low-rpm response—undersized or worn jets leave you with rough running and poor throttle transition. This genuine MIKUNI 4-pack gives you the precision calibration your carb demands, with...KVM2848620- SKU:
- KVM2848620
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- UTV
- RIDING STYLE:
- STREET
- JET SIZE:
- 20
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- 4 PACK
- HEAD DIAMETER METRIC:
- 5.00 MM
- OVERALL LENGTH METRIC:
- 27.80 MM
- RIDING STYLE:
- ATV
- TYPE:
- PILOT
$14.55 -
MIKUNI Pilot Jet - 4-Pack VM28/486-40
MIKUNI
$14.55A properly tuned pilot jet is critical to carburetor performance at low throttle openings and idle conditions—where most of your riding happens. This 4-pack ensures you have exact replacements on hand and the flexibility to dial in your fuel mixture...KVM2848640- SKU:
- KVM2848640
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- JET SIZE:
- 40
- RIDING STYLE:
- UTV
- TYPE:
- PILOT
- HEAD DIAMETER METRIC:
- 5.00 MM
- MATERIAL:
- BRASS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- 4 PACK
- OVERALL LENGTH METRIC:
- 27.80 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$14.55 -
MIKUNI Main Jet - 4-Pack N100604-120
MIKUNI
$5.20Carburetor tuning is critical to achieving optimal fuel delivery and engine response across your RPM range. A worn or incorrectly sized main jet will cause flat spots in mid-range power and poor throttle response. This 4-pack of genuine Mikuni main jets...KN100604120- SKU:
- KN100604120
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- HEAD TYPE:
- SLOTTED
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- RIDING STYLE:
- SNOW
- UNITS:
- 4 PACK
- JET SIZE:
- 120
- RIDING STYLE:
- ATV
$5.20 -
MIKUNI Main Jet - 4-Pack N100604-1225
MIKUNI
$14.55Precision fuel delivery is the foundation of carburetor tuning, and the right main jet directly controls your engine's fuel-air ratio at cruise and part-throttle operation. This OEM-spec Mikuni main jet 4-pack ensures you have the correct sizing on hand...KN1006041225- SKU:
- KN1006041225
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- JET SIZE:
- 122.5
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- UNITS:
- 4 PACK
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TYPE:
- MAIN
- HEAD TYPE:
- SLOTTED
- RIDING STYLE:
- STREET
$14.55 -
MIKUNI Main Jet - 4-Pack N100604-1275
MIKUNI
$14.55Precision fuel delivery is fundamental to carburetor performance, and a worn or incorrect main jet directly impacts your air-fuel ratio across the mid-to-high RPM range. This OEM-quality 4-pack from MIKUNI ensures you have fresh, accurate jets on hand...KN1006041275- SKU:
- KN1006041275
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- ATV
- HEAD TYPE:
- SLOTTED
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- JET
- JET SIZE:
- 127.5
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- TYPE:
- MAIN
- UNITS:
- 4 PACK
$14.55 -
MIKUNI Main Jet - 4-Pack N100604-130
MIKUNI
$14.55Proper jetting is fundamental to carburetor performance—running the wrong main jet size restricts fuel flow and creates lean conditions that kill power and risk engine damage. This genuine Mikuni 130 main jet is precision-manufactured to OE...KN100604130- SKU:
- KN100604130
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- JET SIZE:
- 130
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- UNITS:
- 4 PACK
- RIDING STYLE:
- UTV
- HEAD TYPE:
- SLOTTED
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$14.55 -
MIKUNI Main Jet - 4-Pack N100604-1375
MIKUNI
$14.55Precise jetting is the foundation of reliable carburetor performance, and running the wrong main jet costs you fuel efficiency, throttle response, and engine longevity. This 4-pack of genuine Mikuni main jets gives you the flexibility to dial in your...KN1006041375- SKU:
- KN1006041375
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- HEAD TYPE:
- SLOTTED
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- BRASS
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- UNITS:
- 4 PACK
- JET SIZE:
- 137.5
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- PRODUCT NAME:
- JET
$14.55 -
MIKUNI Pilot Jet - 4-Pack VM28/486-60
MIKUNI
$14.55Precise fuel delivery at idle and low-load conditions is critical to carburetor tuning—and a worn or incorrect pilot jet compromises both driveability and fuel economy. This 4-pack of OEM MIKUNI pilot jets gives you the exact sizing needed to dial in...KVM2848660- SKU:
- KVM2848660
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- HEAD DIAMETER METRIC:
- 5.00 MM
- OVERALL LENGTH METRIC:
- 27.80 MM
- RIDING STYLE:
- ATV
- TYPE:
- PILOT
- UNITS:
- 4 PACK
- JET SIZE:
- 60
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- BRASS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- UTV
$14.55 -
MIKUNI Main Jet - 4-Pack N100604-100
MIKUNI
$14.55A lean-running carburetor starves your engine of fuel, killing acceleration and throttle response. The MIKUNI Main Jet 4-Pack gives you the precision tuning tool to dial in the perfect air-fuel mixture for your specific riding conditions—whether you're...KN100604100- SKU:
- KN100604100
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- HEAD TYPE:
- SLOTTED
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- JET SIZE:
- 100
- MATERIAL:
- BRASS
- RIDING STYLE:
- SNOW
- UNITS:
- 4 PACK
- RIDING STYLE:
- ATV
$14.55 -
MIKUNI Main Jet - 4-Pack N100604-105
MIKUNI
$5.20Proper jetting is fundamental to carburetor tuning—it directly controls fuel delivery and engine performance across the RPM range. This 4-pack of genuine Mikuni main jets gives you the flexibility to dial in your air-fuel mixture for optimal power,...KN100604105- SKU:
- KN100604105
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- JET SIZE:
- 105
- TYPE:
- MAIN
- UNITS:
- 4 PACK
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- RIDING STYLE:
- SNOW
- HEAD TYPE:
- SLOTTED
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
$5.20 -
MIKUNI Main Jet - 4-Pack N100604-1075
MIKUNI
$5.20Tuning your carburetor's fuel delivery requires precise jet sizing—too rich and you waste fuel while fouling plugs, too lean and you risk engine damage. The MIKUNI Main Jet 4-Pack gives you the flexibility to dial in your air-fuel ratio across different...KN1006041075- SKU:
- KN1006041075
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- MAIN
- UNITS:
- 4 PACK
- JET SIZE:
- 107.5
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- HEAD TYPE:
- SLOTTED
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$5.20
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Street Bike Carburetor Main Jets
- Compatibility: Match jets to your bike's make (e.g., Suzuki GSX-R, Honda CBR, Kawasaki ZX, Yamaha R-series) and carburetor type (e.g., Mikuni VM16, HS40, HSR42/45/48, RS, TM, VM29/33 Smoothbores). Use the vehicle selector for year-specific fits to ensure precise metering without performance issues.
- Type of Use: For high-RPM street or track riding, select main jets (sizes 100-210) for optimized fuel delivery; low-speed/idle tuning benefits from pilot jets (sizes 15-60) in multi-carb setups for smooth response in urban or touring conditions.
- Components and Upgrades: Choose 4-packs with brass construction, slotted heads for easy adjustment, and OEM-quality specs. Focus on ethanol-resistant materials and precise sizing for tuning fuel mixture, throttle response, and engine efficiency.
- Brand and Quality: Opt for Mikuni for premium, Japan-made jets or EBC for compatible alternatives. Prioritize brass slotted designs for durability, accurate flow, and longevity in modern fuels.
- Installation and Cost: Jets are simple to swap with basic tools for DIY tuning; sold in 4-packs for convenience. Prices are $5.20 per pack—consider bulk for multiple sizes and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What street bike models do these carburetor main jets support? Jets fit models with Mikuni carbs like Suzuki GSX-R, Honda CBR, Kawasaki ZX, and Yamaha R-series—use the year/make/model filter for exact compatibility, especially if stock Mikuni-equipped.
- Main jets vs. pilot jets: What's the difference? Main jets (e.g., sizes 100-210) control high-RPM fuel; pilot jets (e.g., sizes 15-60) handle idle/low-speed for smooth acceleration and response.
- How do brass jets improve tuning? Slotted brass construction allows easy adjustment, precise metering, and resistance to modern fuels, optimizing mixture for better throttle and performance.
- Are these jets sold individually? No, available in 4-packs for convenience in tuning multiple carbs or testing sizes.
- What if a jet size doesn't match my bike? Verify carb type and size before buying. Our returns policy allows exchanges or refunds if it doesn't fit.
- Can I find related air and fuel parts? Yes—explore rebuild kits, needles, or full carbs in the street bike air and fuel category to complement your jet upgrade for complete tuning.
