GOOFIT
Carburetor 21mm PHBG for 2-Stroke 50cc 70cc 90cc 100cc Scooter Moped
Carburetor 21mm PHBG for 2-Stroke 50cc 70cc 90cc 100cc Scooter Moped
5.0 / 5.0
(2) 2 total reviews
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GOOFIT 21mm PHBG High-Performance Carburetor for 2-Stroke Scooters & Mopeds
Dominate the track and the street with ultimate airflow. This high-performance 21mm PHBG-style Carburetor is the premier choice for riders looking to maximize the power of their 2-stroke engines. Perfectly sized for heavily modified 50cc engines or 70cc–100cc Big Bore kits, this 21mm bore provides the high-volume fuel delivery required for high-RPM operation and aggressive acceleration.
Constructed from premium aluminum alloy, the carburetor body features a professional anodized finish. This advanced treatment significantly enhances abrasion and corrosion resistance while providing superior heat insulation—ensuring your fuel remains cool to prevent "vapor lock" during intense racing or long-distance rides.
Product Compatibility
- Engine Type: 2-Stroke 50cc, 70cc, 80cc, 90cc, 100cc.
- Vehicle Types: Racing Scooters, Performance Mopeds, and 2-Stroke Pit Bikes.
- Tuning Grade: Racing / High-Output (Ideal for port-matched cylinders and expansion chamber exhausts).
Key Technical Specifications:
- Intake Side Inner Diameter: 21mm
- Material: Anodized Aluminum Alloy for heat management and durability.
- Design: PHBG-style precision jetting for fine-tuned performance.
- Function: Solves difficult starting and unstable idling in high-performance builds.
Why Choose This 21mm Racing Carburetor?
- Peak Power Delivery: The large 21mm bore allows for massive air intake, providing the "punch" needed for top-end speed and mid-range torque on tuned 2-stroke motors.
- Anodized Protection: The specialized coating protects internal and external surfaces against corrosive modern fuels and environmental wear, ensuring long-term reliability.
- Consistent Engine Response: Precision-machined throttle paths eliminate "dead spots" in acceleration, giving you a crisp, immediate response every time you twist the throttle.
- Race-Ready Reliability: Engineered to replace aging or restricted factory units, this carburetor provides a rock-solid idle even on high-compression racing engines.
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Fitment FAQ
Will this part fit my specific model and year?
This carburetor is intended for Engine Type: 2-Stroke 50cc, 70cc, 80cc, 90cc, 100cc.; Vehicle Types: Racing Scooters, Performance Mopeds, and 2-Stroke Pit Bikes.; Tuning Grade: Racing / High-Output (Ideal for port-matched cylinders and expansion chamber exhausts).. Key physical/spec details from the product data include Intake Side Inner Diameter: 21mm, 21mm, 50cc. Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. If your original part has a stamped OEM or manufacturer number, match that number first before ordering. For this carburetor, also compare the intake diameter, outlet diameter, flange/bolt spacing, choke type, throttle-cable connection, fuel/vacuum ports, and engine displacement.
What models or situations does this part not fit?
Do not order this carburetor for machines outside the listed compatibility, or for units with different intake sizes, cable/choke styles, flange spacing, jetting requirements, or fuel/vacuum port layouts. Do not rely only on the model name or engine size.
What should I check before ordering?
Before ordering, compare your original part with the photos and check the intake diameter, outlet diameter, flange/bolt spacing, choke type, throttle-cable connection, fuel/vacuum ports, and engine displacement. Recheck listed specs such as Intake Side Inner Diameter: 21mm, 21mm, 50cc. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.
The GOOFIT 21mm Carburetor replacement is a game-changer for my 80cc Aprilia. With a 21mm inner diameter on the intake side, it's a perfect performance upgrade for any 2-stroke 50cc to 100cc scooters and mopeds. The aluminum used on this is top notch with an anodized finish. I found idle, responsiveness when accelerating and idling to far outperform the original damaged carburetor.
I wanted to upgrade my carburetor on my motorized bicycle, but I wanted the same clamp on style as the stock carburetor that comes with the motor kit. As I don’t like the look of a rubber hose and hose clamps in order to attach it to the intake or in my case the reed valve. Finally I found this carburetor I had to get a bigger intake for my reed valve which is available and I got the 21mm version. Two things I didn’t realize which might be two things that other people might like about this version of the carb. First thing the fuel mixture screw and idle screw are on the right side where my exhausts runs and burning my hands was not an option to tune adjust the carburetor. So either I found new exhausts that bends a different way or I get a different carburetor, which luckily there is a version of the carburetor which all the adjustments on the left side as I will put a picture showing that one. Second thing I don’t like which again might be what someone is looking for and likes about this carb is that it has a cable operated choke. I just like haveing less parts to have to replace when they go bad and another cable is just another part that could go bad! Plus I’d have to mount a choke lever somewhere. But other than those two things the performance I got from this carburetor is Awsome. It gives me power all the way through from start to full throttle. The fuel bowl is big and doesn’t run out which was one issue I was haveing with the stock carburetor. The only adjustments I made was I replaced the needle, atomizer and main jet sizes to better fine tune it but it ran without doing any of those three things I was just trying to get most performance I could and I did. My bike went from 47 mph to 55. Mph once it was tuned and dialed in. I might add your gonna have to tune any new carburetor as every motor is different and where you live as far as sea level can also change how your carburetor is tuned
