Dirt Bike Carburertor Main Jets
Dirt Bike Carburetor Main Jets & Jet Needles for Mikuni Carbs on Honda, Yamaha & KTM at JJ Motorsports
Fine-tune your dirt bike's fuel mixture for optimal power and efficiency with premium carburetor main jets and jet needles from JJ Motorsports. Our selection includes high-precision brass main jets (sizes 100-140) and tapered jet needles designed for consistent mid-range performance, smooth throttle response, and easy tuning in motocross, enduro, and trail riding. Compatible with Mikuni VM series carbs on popular models like Honda CRF, Yamaha YZ/WR, Kawasaki KX, Suzuki RM, and KTM SX/EXC, these Japanese-made components ensure accurate metering, reduced lean spots, and reliable operation in dusty, high-RPM conditions. From 4/042 main jets for VM18/26 carbs to J8-series needles for mid-throttle control, stock up on the parts needed for a full carb rebuild or jetting upgrade.
Shop trusted brands like Mikuni for OEM-quality precision. Explore related categories such as dirt bike carburetor rebuild kits for complete maintenance or dirt bike air and fuel for reeds and filters.
Top Dirt Bike Carburetor Main Jets & Needles
- Mikuni Jet Needle J8-6F08 – Precision tapered jet needle for mid-range fuel control in Mikuni VM series carbs; fits various OE applications, made in Japan for smooth throttle response.
- Mikuni Main Jet #100 - 4-Pack (4/042-100) – Brass main jet pack for VM18, VM24/26, TMX carbs; 6mm diameter, 12mm length, ideal for leaner mixtures in dirt bikes.
- Mikuni Main Jet #125 - 4-Pack (4/042-125) – High-flow brass jets for richer high-RPM tuning; compatible with Mikuni VM series and OE carbs on Honda, Yamaha, and KTM models.
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
-
WSM Keihin Low-Speed Jet 006-6075
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0066075- SKU:
- 0066075
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- JET SIZE:
- 75
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- EACH
- TYPE:
- PILOT
$2.17 -
WSM Keihin Low-Speed Jet 006-6078
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0066078- SKU:
- 0066078
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- JET SIZE:
- 78
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- PILOT
- UNITS:
- EACH
$2.17 -
WSM Keihin Low-Speed Jet 006-6080
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0066080- SKU:
- 0066080
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- JET SIZE:
- 80
- TYPE:
- PILOT
- UNITS:
- EACH
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
$2.17 -
WSM Keihin Low-Speed Jet 006-6082
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0066082- SKU:
- 0066082
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- JET SIZE:
- 82
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- PILOT
- UNITS:
- EACH
- PRODUCT NAME:
- JET
$2.17 -
WSM Keihin Low-Speed Jet 006-6085
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0066085- SKU:
- 0066085
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- JET SIZE:
- 85
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- PILOT
- PRODUCT NAME:
- JET
- UNITS:
- EACH
$2.17Qty in Cart: 0Quantity:Price:$2.17Subtotal: -
WSM Keihin Low-Speed Jet 006-6088
WSM
$2.07For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0066088- SKU:
- 0066088
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- PILOT
- JET SIZE:
- 88
$2.07Qty in Cart: 0Quantity:Price:$2.07Subtotal: -
WSM Keihin Low-Speed Jet 006-6095
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0066095- SKU:
- 0066095
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- JET
- UNITS:
- EACH
- JET SIZE:
- 95
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- PILOT
$2.17 -
WSM Keihin High-Speed Jet 006-7110
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0067110- SKU:
- 0067110
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- EACH
- JET SIZE:
- 110
- MATERIAL:
- BRASS
- RIDING STYLE:
- WATERCRAFT
- MODEL:
- KEIHIN
- PRODUCT NAME:
- JET
- TYPE:
- MAIN
$2.17 -
WSM Keihin High-Speed Jet 006-7115
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0067115- SKU:
- 0067115
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- MODEL:
- KEIHIN
- JET SIZE:
- 115
- MATERIAL:
- BRASS
- UNITS:
- EACH
- TYPE:
- MAIN
$2.17 -
WSM Keihin High-Speed Jet 006-7125
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0067125- SKU:
- 0067125
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- WATERCRAFT
- JET SIZE:
- 125
- UNITS:
- EACH
- MATERIAL:
- BRASS
- MODEL:
- KEIHIN
- PRODUCT NAME:
- JET
- TYPE:
- MAIN
$2.17 -
WSM Keihin High-Speed Jet 006-7128
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0067128- SKU:
- 0067128
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- JET
- TYPE:
- MAIN
- MODEL:
- KEIHIN
- JET SIZE:
- 128
- RIDING STYLE:
- WATERCRAFT
- MATERIAL:
- BRASS
- UNITS:
- EACH
$2.17Qty in Cart: 0Quantity:Price:$2.17Subtotal: -
WSM Keihin High-Speed Jet 006-7145
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0067145- SKU:
- 0067145
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- KEIHIN
- UNITS:
- EACH
- JET SIZE:
- 145
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- MAIN
- MATERIAL:
- BRASS
$2.17 -
WSM Keihin High-Speed Jet 006-7148
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0067148- SKU:
- 0067148
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- EACH
- JET SIZE:
- 148
- MODEL:
- KEIHIN
- TYPE:
- MAIN
- MATERIAL:
- BRASS
$2.17Qty in Cart: 0Quantity:Price:$2.17Subtotal: -
WSM Keihin High-Speed Jet 006-7152
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0067152- SKU:
- 0067152
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- MODEL:
- KEIHIN
- UNITS:
- EACH
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- MAIN
- JET SIZE:
- 152
- MATERIAL:
- BRASS
$2.17 -
WSM Keihin High-Speed Jet 006-7158
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0067158- SKU:
- 0067158
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- PRODUCT NAME:
- JET
- TYPE:
- MAIN
- JET SIZE:
- 158
- MODEL:
- KEIHIN
- MATERIAL:
- BRASS
- UNITS:
- EACH
- RIDING STYLE:
- WATERCRAFT
$2.17Qty in Cart: 0Quantity:Price:$2.17Subtotal: -
WSM Keihin High-Speed Jet 006-7160
WSM
$2.17For Keihin CDK 2 watercraft carbs, Made in Japan for WSM0067160- SKU:
- 0067160
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- JET SIZE:
- 160
- MODEL:
- KEIHIN
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- MAIN
- MATERIAL:
- BRASS
- UNITS:
- EACH
$2.17 -
MIKUNI Jet Needle J8-6DP01
MIKUNI
$10.50Fitments include several Mikuni VM model and some OE Mikuni carburetors, Jet needles control the fuel mixture in the mid-range throttle position, Some jet needles don't have measurements provided by Mikuni, Use charting to verify dimensions in...6DP1- SKU:
- 6DP1
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- MODEL:
- J8-6DP01
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$10.50 -
MIKUNI Jet Needle (Replacement for/6DP5) J8-6DP17
MIKUNI
$10.50Fitments include several Mikuni VM model and some OE Mikuni carburetors, Jet needles control the fuel mixture in the mid-range throttle position, Some jet needles don't have measurements provided by Mikuni, Use charting to verify dimensions in...6DP17- SKU:
- 6DP17
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- J8-6DP17
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$10.50 -
MIKUNI Jet Needle J8-6EJ12-56
MIKUNI
$10.50Fitments include several Mikuni VM model and some OE Mikuni carburetors, Jet needles control the fuel mixture in the mid-range throttle position, Some jet needles don't have measurements provided by Mikuni, Use charting to verify dimensions in...6EJ1256- SKU:
- 6EJ1256
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MODEL:
- J8-6EJ12-56
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- TYPE:
- NEEDLE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$10.50 -
MIKUNI Jet Needle J8-6EJ12-57
MIKUNI
$10.50Fitments include several Mikuni VM model and some OE Mikuni carburetors, Jet needles control the fuel mixture in the mid-range throttle position, Some jet needles don't have measurements provided by Mikuni, Use charting to verify dimensions in...6EJ1257- SKU:
- 6EJ1257
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- MODEL:
- J8-6EJ12-57
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$10.50
