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Start ShoppingMIKUNI #135 Hex Main Jets - Precision Brass Fuel Jets for High-Performance Powersports Engines
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Description
Upgrade your powersports engine's fuel delivery system with MIKUNI's #135 Hex Main Jets. These precision-engineered brass jets deliver consistent fuel flow for enhanced power, responsiveness, and reliable performance in demanding riding conditions.
Key Features
- Jet Size #135: Optimized for high-performance engines requiring precise fuel metering at elevated RPMs.
- Brass Construction: Durable, corrosion-resistant material ensures long-lasting accuracy in fuel flow regulation.
- Hex Head Thread: Easy installation and adjustment with standard hex tools for hassle-free maintenance.
- M5 x 0.75 Thread: Universal compatibility with most Mikuni carburetor models for seamless integration.
- 0.5g Weight: Lightweight design reduces engine load while maintaining structural integrity.
Why Choose This Product
MIKUNI main jets are trusted by racers and enthusiasts for their unmatched precision and reliability. The brass material resists clogging and maintains consistent flow under extreme temperatures, while the hex thread design simplifies adjustments during tuning. Whether you're modifying a motocross bike, off-road vehicle, or high-speed scooter, these jets deliver the accuracy needed to maximize power output and fuel efficiency.
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Upgrade your powersports engine's fuel delivery system with MIKUNI's #135 Hex Main Jets. These precision-engineered brass jets deliver consistent fuel flow for enhanced power, responsiveness, and reliable performance in demanding riding conditions.
Key Features
- Jet Size #135: Optimized for high-performance engines requiring precise fuel metering at elevated RPMs.
- Brass Construction: Durable, corrosion-resistant material ensures long-lasting accuracy in fuel flow regulation.
- Hex Head Thread: Easy installation and adjustment with standard hex tools for hassle-free maintenance.
- M5 x 0.75 Thread: Universal compatibility with most Mikuni carburetor models for seamless integration.
- 0.5g Weight: Lightweight design reduces engine load while maintaining structural integrity.
Why Choose This Product
MIKUNI main jets are trusted by racers and enthusiasts for their unmatched precision and reliability. The brass material resists clogging and maintains consistent flow under extreme temperatures, while the hex thread design simplifies adjustments during tuning. Whether you're modifying a motocross bike, off-road vehicle, or high-speed scooter, these jets deliver the accuracy needed to maximize power output and fuel efficiency.
| SKU | GMA64D5DE4 |
|---|---|
| MPN | F4/042-135 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various | Mikuni TM/VM/PF Series Carburetors | 1980-2025 |
| Yamaha | XT600, YZ250F | 1990-2010 |
| Honda | XR600R, CRF450R | 1985-2005 |
| Kawasaki | KX500, KLX300 | 1995-2020 |
| Suzuki | DR-Z400 | 2000-2015 |
Frequently Asked Questions
Fits Mikuni TM, VM, and PF series carbs with round main jet needle (most powersports bikes 1980-2025). Confirm your carb model.
Yes, OEM Mikuni hex main jet, part number F4/042-135.
Yes, changing air filter, exhaust, or altitude may require new jet size like #135.
Yes, ideal for tuning fuel delivery in racing or modified setups.
Hex jets have wrench flats for easier installation/removal.
Installation Guide
Difficulty
Easy
Est. Time
5 min
Tools Required
- Flathead screwdriver
- 12mm socket or wrench
Pro Tips
- Count turns on air screw before removing jet
- Use carb cleaner to inspect jet orifice
Common Mistakes to Avoid
- Not cleaning carb bowl before install
- Installing wrong jet size
Comparison vs Stock/OEM
Direct OEM replacement for factory Mikuni carbs
Improvements
- Precise fuel metering for mods
- Easier hex install vs slotted jets
Considerations
- Must match engine mods; stock may be smaller size
Durability & Warranty
Expected Lifespan
Indefinite with proper maintenance
Warranty
Mikuni lifetime against defects
Maintenance
Inspect/clean during carb service (every 20-50 hours)
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