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Start ShoppingMIKUNI FTM45-2K Smoothbore Carburetor - High-Performance Fuel System for Powersports
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Description
Upgrade your powersports engine's performance with the MIKUNI FTM45-2K Smoothbore Carburetor, designed for precise fuel metering and reliable operation in high-performance applications. This carburetor delivers consistent power output while maintaining fuel efficiency for riders who demand peak performance.
Key Features
- Smoothbore Design: Ensures even fuel distribution for balanced engine response and reduced turbulence.
- High-Flow Construction: Optimized internal passages maximize airflow while maintaining fuel efficiency.
- Durable Materials: Cast aluminum housing resists corrosion and withstands harsh off-road conditions.
- Easy Adjustment: Simple float level calibration allows quick tuning for different riding conditions.
Why Choose This Product
The FTM45-2K combines MIKUNI's reputation for precision engineering with a streamlined design that enhances throttle response and fuel economy. Its robust build ensures long-term reliability, while the smoothbore configuration minimizes fuel vapor lock risks. Perfect for modifying or maintaining engines in ATVs, dirt bikes, and other powersports vehicles, this carburetor offers a balance of performance and practicality for riders who push their machines to the limit.
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Upgrade your powersports engine's performance with the MIKUNI FTM45-2K Smoothbore Carburetor, designed for precise fuel metering and reliable operation in high-performance applications. This carburetor delivers consistent power output while maintaining fuel efficiency for riders who demand peak performance.
Key Features
- Smoothbore Design: Ensures even fuel distribution for balanced engine response and reduced turbulence.
- High-Flow Construction: Optimized internal passages maximize airflow while maintaining fuel efficiency.
- Durable Materials: Cast aluminum housing resists corrosion and withstands harsh off-road conditions.
- Easy Adjustment: Simple float level calibration allows quick tuning for different riding conditions.
Why Choose This Product
The FTM45-2K combines MIKUNI's reputation for precision engineering with a streamlined design that enhances throttle response and fuel economy. Its robust build ensures long-term reliability, while the smoothbore configuration minimizes fuel vapor lock risks. Perfect for modifying or maintaining engines in ATVs, dirt bikes, and other powersports vehicles, this carburetor offers a balance of performance and practicality for riders who push their machines to the limit.
| SKU | GMDDEB17C3 |
|---|---|
| MPN | FTM45-2K |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Honda | CRF450R | 2019-2025 |
| Honda | CRF450RX | 2019-2025 |
| Honda | CRF450RL | 2020-2025 |
| KTM | 450 SX-F | 2021-2025 |
| KTM | 450 EXC-F | 2021-2025 |
Frequently Asked Questions
Yes, direct bolt-on replacement for 2019+ Honda CRF450R/RX models. Manifold and throttle cable compatible.
Comes with main jets 142-158, pilot 25-35, air jets, and needles. Sea level starting point is typically 152 main / 30 pilot.
Yes, always rejet based on your elevation, temperature, and mods. Plug chop method recommended for proper tuning.
Requires Mikuni adapter kit for KTM/Husqvarna. Check fitment tab for details.
No airbox modification required. Works with stock airbox and lid.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- 8mm-12mm sockets
- torque wrench
- carb cleaner
- screwdrivers
- needle nose pliers
- jetting kit
Pro Tips
- Clean intake manifold before install
- Use manifold gasket sealant
- Start with included jetting and adjust based on elevation/temp
- Torque manifold bolts to 8-10 ft-lbs
Common Mistakes to Avoid
- Incorrect jetting leading to lean/rich conditions
- Not syncing throttle valves
- Damaging o-rings during install
- Forgetting to check float height
Comparison vs Stock/OEM
Much faster throttle response and better mid-top power vs stock Keihin/PWK carbs
Improvements
- Lightning quick throttle response
- Smoother power delivery
- Better atomization
- Easier tuning
- 20-30% more top-end power potential
Considerations
- Requires proper jetting expertise
- More expensive than stock replacement
Durability & Warranty
Expected Lifespan
3-5 years with proper jetting/maintenance
Warranty
1 year manufacturer defect warranty
Maintenance
Clean every 10-20 hours racing, rebuild every 50-100 hours, check float height regularly
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