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Start ShoppingMIKUNI FTM42-6 Smoothbore Carburetor - High-Performance Fuel System for Powersports
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Description
Upgrade your powersports engine's performance with the MIKUNI FTM42-6 Smoothbore Carburetor, engineered for precision fuel delivery and consistent power output. This high-performance fuel system ensures optimal air-fuel mixture for maximum horsepower and fuel efficiency, making it an essential upgrade for serious riders.
Key Features
- Precision Fuel Tuning: Ensures optimal air-fuel mixture for maximum power and fuel efficiency.
- Durable Cast Aluminum Construction: Resists corrosion and heat, ensuring long-lasting reliability in demanding environments.
- Easy Installation Design: Streamlined setup saves time and minimizes downtime for quick performance gains.
- Universal Compatibility: Designed for high-output engines in ATVs, UTVs, and motorcycles for seamless integration.
Why Choose This Product
Whether you're racing or riding off-road, the MIKUNI FTM42-6 delivers consistent throttle response and smooth power delivery. Its robust build withstands extreme conditions, while the smoothbore design reduces turbulence for precise fuel control. This carburetor is a trusted choice for riders who demand peak performance without compromising reliability.
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Upgrade your powersports engine's performance with the MIKUNI FTM42-6 Smoothbore Carburetor, engineered for precision fuel delivery and consistent power output. This high-performance fuel system ensures optimal air-fuel mixture for maximum horsepower and fuel efficiency, making it an essential upgrade for serious riders.
Key Features
- Precision Fuel Tuning: Ensures optimal air-fuel mixture for maximum power and fuel efficiency.
- Durable Cast Aluminum Construction: Resists corrosion and heat, ensuring long-lasting reliability in demanding environments.
- Easy Installation Design: Streamlined setup saves time and minimizes downtime for quick performance gains.
- Universal Compatibility: Designed for high-output engines in ATVs, UTVs, and motorcycles for seamless integration.
Why Choose This Product
Whether you're racing or riding off-road, the MIKUNI FTM42-6 delivers consistent throttle response and smooth power delivery. Its robust build withstands extreme conditions, while the smoothbore design reduces turbulence for precise fuel control. This carburetor is a trusted choice for riders who demand peak performance without compromising reliability.
| SKU | GM599447C0 |
|---|---|
| MPN | FTM42-6 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Honda | CRF450R | 2019-2024 |
| Honda | CRF450RX | 2019-2024 |
| Honda | CRF450RL | 2020-2024 |
Frequently Asked Questions
Yes, direct bolt-on replacement for 2019+ CRF450R/RX models. Intake manifold and throttle cable compatible.
Includes Mikuni recommended jetting for stock exhaust and airbox. May need adjustment for aftermarket exhaust/filter.
No ECU changes needed. Functions with stock ECU. Fuel mapping optimized for smoothbore design.
Not CARB certified. Intended for off-road/competition use only.
Yes, stock Honda throttle cable works perfectly. Pull ratio is compatible.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 30 min
Tools Required
- Socket set (8-12mm)
- Torque wrench
- Carburetor screwdriver set
- Needle nose pliers
- Compressed air
Pro Tips
- Replace intake manifold/boot during install
- Use manifold heater delete plug if applicable
- Bench sync carbs before install
- Start with factory jetting specs
Common Mistakes to Avoid
- Not syncing throttle valves
- Incorrect float height adjustment
- Overlooking intake boot condition
Comparison vs Stock/OEM
Replaces Keihin 42mm throttle body with true flat-slide smoothbore design
Improvements
- Faster throttle response
- Better airflow (15-20% more)
- Easier tuning and jetting
- Reduced throttle restriction
Considerations
- Requires proper jetting setup
- Slightly more maintenance than EFI
Durability & Warranty
Expected Lifespan
5+ years with proper maintenance
Warranty
1 year Mikuni manufacturer warranty
Maintenance
Clean every 20 hours racing, rebuild every 100 hours, check float height seasonally
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