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Start ShoppingMikuni FTM42-6PK Smoothbore Carburetor - High-Performance Fuel System for Powersports
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Description
Upgrade your powersports engine's performance with the Mikuni FTM42-6PK smoothbore carburetor, engineered for precision fuel atomization and reliable operation in high-performance applications.
Key Features
- 42mm Bore Size: Optimized airflow for enhanced engine efficiency and power output.
- Aluminum Body with Brass Internals: Durable construction resists corrosion while ensuring precise fuel metering.
- Gravity- or Pump-Fed Compatibility: Versatile setup options for diverse fuel system configurations.
- Smoothbore Design: Promotes even fuel distribution for consistent throttle response and performance.
Why Choose This Product
Whether you're modifying a motorcycle, ATV, or off-road vehicle, the FTM42-6PK delivers unmatched fuel delivery control. Its robust aluminum housing and corrosion-resistant brass components ensure long-term reliability, while the smoothbore design minimizes fuel turbulence for smoother acceleration. Perfect for riders seeking precise power delivery without compromising durability in demanding environments.
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Upgrade your powersports engine's performance with the Mikuni FTM42-6PK smoothbore carburetor, engineered for precision fuel atomization and reliable operation in high-performance applications.
Key Features
- 42mm Bore Size: Optimized airflow for enhanced engine efficiency and power output.
- Aluminum Body with Brass Internals: Durable construction resists corrosion while ensuring precise fuel metering.
- Gravity- or Pump-Fed Compatibility: Versatile setup options for diverse fuel system configurations.
- Smoothbore Design: Promotes even fuel distribution for consistent throttle response and performance.
Why Choose This Product
Whether you're modifying a motorcycle, ATV, or off-road vehicle, the FTM42-6PK delivers unmatched fuel delivery control. Its robust aluminum housing and corrosion-resistant brass components ensure long-term reliability, while the smoothbore design minimizes fuel turbulence for smoother acceleration. Perfect for riders seeking precise power delivery without compromising durability in demanding environments.
| SKU | GMA6809640 |
|---|---|
| MPN | FTM42-6PK |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Frequently Asked Questions
The FTM42-6PK is a universal smoothbore carburetor designed for custom and racing applications. Compatibility depends on your specific engine's intake manifold diameter and fuel system. Consult Mikuni's fitment guide or contact a carburetor specialist.
Smoothbore carburetors like the FTM42-6PK are primarily designed for racing and high-performance applications. They may require more frequent tuning adjustments for street use compared to standard carburetors.
Smoothbore carburetors have a straight, unrestricted venturi design that improves fuel atomization and flow, providing better performance at high RPMs. Standard carburetors have a tapered venturi for better low-end response and easier tuning.
Yes, most custom carburetor installations require jetting adjustments to match your specific engine, altitude, and fuel type. Proper jetting is critical for performance and reliability.
Warranty information varies by retailer and region. Contact Mikuni directly or your authorized dealer for specific warranty details on the FTM42-6PK.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- Socket set
- Screwdrivers (Phillips and flathead)
- Torque wrench
- Fuel line clamps
- Gasket scraper
Pro Tips
- Use quality gaskets - do not reuse old ones
- Apply thread sealant to fuel line connections
- Verify fuel pressure compatibility before installation
- Keep carburetor clean during installation to prevent debris entry
Common Mistakes to Avoid
- Over-tightening mounting bolts (can crack carburetor body)
- Incorrect fuel line routing
- Failing to properly seat gaskets
- Not adjusting idle mixture after installation
Comparison vs Stock/OEM
This is a custom/racing carburetor designed to replace standard carburetors with improved performance characteristics
Improvements
- Smoothbore design for unrestricted fuel flow
- Better high-RPM performance
- Improved fuel atomization
- Lighter weight than many OEM carburetors
- Tunable for specific engine configurations
Considerations
- Requires professional jetting and tuning
- May not be street-legal in some jurisdictions
- Requires more maintenance than OEM carburetors
- Not suitable for beginners without carburetor knowledge
Durability & Warranty
Expected Lifespan
5-10+ years with proper maintenance and tuning
Warranty
Contact Mikuni or authorized retailers for specific warranty information
Maintenance
['Regular cleaning and inspection', 'Periodic jetting adjustments based on conditions', 'Fuel system cleaning every season', 'Gasket replacement as needed', 'Proper storage with fuel stabilizer if not in use']
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