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YGQ Main Jet Kit Review: Wide size range for precise carburettor tuning

YGQ Main Jet Kit for Keihin Nibbi Carburetor FCR FCR-MX PE PJ PWK PWM 99101-357 (#168 - #230)
4.8
[Extensive Size Range]  Sizes 168–230 in multiple increments for precise jet selection.
[Wide Carburetor Compatibility]  Fits Keihin FCR/FCR-MX, OKO, KOSO, PE, PJ, PWK, PWM carburetors.
[Broad Vehicle Fitment]  Compatible with Honda, Yamaha, Kawasaki, KTM, Beta, Polaris, Suzuki, Husqvarna.
[Precision Fuel Tuning]  Aftermarket main jets enable accurate fuel delivery and optimized engine performance.
[Built for Powersports]  Ideal for dirt bikes, ATVs and off-road racing applications.
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Automotive parts for carburettor tuning, supplying a broad selection of main jet sizes for finer fuel delivery. Ideal for riders who want crisper throttle response and easier jetting on dirt bikes and ATVs. Are the sizes and compatibility in the YGQ Main Jet Kit right for serious tuners?

⚡ At a Glance
  • Jet Sizes: Sizes: 168, 170, 172, 175, 178, 180, 182, 185, 188, 190, 195, 200, 205, 210, 215, 220, 230
  • Best for: Mechanics and riders tuning carburettors on dirt bikes, ATVs and other powersport machines
  • Not ideal for: Owners who must match exact OEM part numbers from manufacturers

Main jet kit includes multiple sizes from 168 up to 230 for incremental fuel flow changes. Aftermarket compatibility covers Keihin-style carburettors including FCR and many similar types.


Precise jetting control - with a wide range of jet sizes

Jets come in incremental sizes from 168 to 230, letting tuners alter main jet orifice size to change fuel flow. Adjusting to a larger or smaller jet directly leans or richens the main fuel mixture.

Enables fine-tuning for altitude, fuel type or riding style, helping to reduce throttle hesitation and improve midrange response once matched correctly.

Broad carburettor compatibility - with aftermarket fit for Keihin-style carbs

Listed compatibility includes Nibbi Keihin FCR and FCR-MX, plus OKO, KOSO, PE, PJ, PWK and PWM types. Product descriptions explicitly reference fit for many HONDA, YAMAHA, KAWASAKI, KTM, BETA, POLARIS, SUZUKI and HUSQVARNA models.

Useful for workshops and owners who service multiple makes, reducing the need to buy different branded jets for each carburettor type.

Cost-effective spares and replacements - thanks to aftermarket availability and user feedback

Marketed as aftermarket main jets and noted in user reviews for performing as intended and costing less than branded alternatives. Multiple size variations are sold so tuners can choose the correct set before ordering.

Keeps spares on hand for track days or rapid jetting changes without relying on pricier branded parts, while still delivering reliable performance according to buyers.

✨ The 4 Key Reasons for YGQ Main Jet Kit
  1. Compatibility - Reduces downtime by allowing on-site jet swaps for varied bikes
  2. Size Variety - Offers 17 jet sizes for precise fuel flow adjustments
  3. Aftermarket Value - Lower-cost alternative to branded jets while matching practical performance
  4. Reliable Fitment - Customers report consistent operation once correctly matched to carburettor
📋 Technical Details at a Glance
  • Category: Automotive Parts and Accessories
  • Brand: YGQ
  • Type: Main Jet Kit
  • Compatible carburettors: Nibbi Keihin FCR, FCR-MX, OKO, KOSO, PE, PJ, PWK, PWM
  • Sizes included: 168, 170, 172, 175, 178, 180, 182, 185, 188, 190, 195, 200, 205, 210, 215, 220, 230
❓ Frequently Asked Questions

Q: Will these jets fit Keihin FCR carburettors?

A: Yes, sold as aftermarket main jets for Nibbi Keihin FCR and FCR-MX, and for other Keihin-style carburettors listed in the description.

Q: What sizes are included in the kit?

A: Available sizes include 168, 170, 172, 175, 178, 180, 182, 185, 188, 190, 195, 200, 205, 210, 215, 220 and 230; choose the correct variation as shown in the product images.

Q: Will these suit my dirt bike or ATV model?

A: Compatibility notes list many HONDA, YAMAHA, KAWASAKI, KTM, BETA, POLARIS, SUZUKI and HUSQVARNA models, so check the model list and size variation before ordering.

🏆 Our Verdict

Suitable for riders and technicians who need a broad selection of main jets to optimise Keihin-style carburettors. Wide size range and extensive compatibility across popular dirt bike and ATV models make accurate jetting simpler. Aftermarket focus and positive user reports on reliable performance make the kit a cost-effective long-term spares choice.