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PHBG 19mm Racing Carburetor for 2-Stroke 50cc 70cc Mopeds
PHBG 19mm Racing Carburetor for 2-Stroke 50cc 70cc Mopeds
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Product Overview
Upgrade your 2-stroke moped, scooter, or mini bike with this PHBG 19mm racing carburetor, designed for 50cc–70cc sport setups that need quicker throttle response, smoother fuel delivery, and better mid-range acceleration.
The 19mm bore is a practical choice for riders who want improved performance without going too large for a smaller 2-stroke engine. It works well for many 50cc and 70cc platforms, including RS50, RX50, MX50, SX50-style, MBK 50, and similar 2-stroke moped or scooter builds.
Its PHBG-style design allows fine adjustment of idle, needle position, and jetting, making it suitable for tuned engines, sport cylinders, and light performance upgrades. Proper tuning is required after installation.
Product Compatibility
| Category | Fitment |
|---|---|
| Engine Type | 2-Stroke / 2T engines |
| Engine Range | 50cc–70cc sport setups |
| Target Vehicles | Mopeds, scooters, mini bikes, small 2-stroke racing builds |
| Example Platforms | RS50, RX50, MX50, SX50-style, MBK 50 and similar models |
| Best Use | Throttle response, fuel economy balance, sport riding |
Specifications
| Specification | Details |
|---|---|
| Product Type | PHBG-Style Racing Carburetor |
| Bore Size | 19mm / 0.74" |
| Engine Type | 2-Stroke |
| Recommended Engine Range | 50cc–70cc |
| Material | High-strength alloy |
| Application | Moped / Scooter / Mini Bike / 2T Performance Build |
| Condition | New |
Key Features
- 19mm Bore Size – Ideal for 50cc–70cc sport builds that need better throttle response.
- PHBG-Style Tuning Design – Supports idle, needle, and jetting adjustment.
- Improved Fuel Atomization – Helps reduce hesitation and dead spots during acceleration.
- Balanced Performance – Good choice for riders who want response without oversizing the carburetor.
- Built for 2-Stroke Engines – Suitable for tuned mopeds, scooters, and small racing platforms.
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Fitment FAQ
Will this part fit my specific model and year?
This PHBG 19mm carburetor may fit many 50cc–70cc 2-stroke mopeds, scooters, and mini bike builds, including RS50, RX50, MX50, SX50-style, MBK 50, and similar platforms. However, fitment depends on your engine setup, intake manifold size, throttle cable style, choke type, air filter connection, and available installation space. Please compare your original carburetor and intake setup before ordering.
Do I need to match the OEM part number?
Not usually. This is an aftermarket PHBG-style racing carburetor, not a factory OEM direct replacement. OEM numbers may help identify your original setup, but for this performance carburetor, physical fitment is more important. Please check the bore size, intake side, air filter side, cable connection, choke style, and fuel line layout.
What models or situations does this part not fit?
This 19mm carburetor may not fit 4-stroke engines, stock engines with incompatible intake manifolds, models using a different throttle cable or choke system, or bikes with limited space around the carburetor. It is also not the best choice for larger 80cc–90cc big bore racing builds that need more airflow.
What should I check before ordering?
Before ordering, please check your engine displacement, 2-stroke engine type, current carburetor size, intake manifold diameter, air filter connection size, throttle cable end, choke style, fuel line position, and installation clearance. Tuning and jetting adjustment may be required after installation.