Nibbi Racing PWK 28 YJ Black – 28mm Racing Carburetor with Powerjet
A performance-oriented PWK carburetor for demanding scooter tuning projects!
The Nibbi Racing PWK 28 YJ Black is a 28mm carburetor featuring an adjustable Powerjet system. It is particularly suitable for modified two-stroke engines requiring precise fuel mixture tuning.
With its black finish, red details and compact PWK design, this carburetor combines a sporty appearance with flexible adjustment options.
It is especially interesting for tuned Piaggio Maxi engines, including applications such as the Gilera Runner, Piaggio TPH and Piaggio SKR.
Key Features
- 28mm carburetor diameter for performance engine setups
- Adjustable Powerjet system for additional mixture tuning
- PWK-style design for various tuning applications
- Black racing finish with red accents
- Pre-installed main and pilot jets
- 50mm air filter connection
- 35mm intake manifold connection
Adjustable Powerjet System
One of the main features of this carburetor is its adjustable Powerjet system.
The Powerjet provides an additional fuel supply under certain operating conditions, offering another way to fine-tune the fuel mixture for your specific engine configuration.
This additional adjustment can be particularly useful for modified two-stroke engines.
Our Practical Experience
We have already used the Nibbi PWK 28 in a tuned engine setup and were able to retain the pre-installed jetting as a starting point.
Further adjustments were primarily made through the adjustable Powerjet system. Depending on weather conditions and altitude, additional Powerjet adjustments were required.
Please note: These observations are based on our specific test setup. Other engines may require changes to the main jet, pilot jet, needle position and Powerjet settings.
Technical Specifications
- Manufacturer: Nibbi Racing
- Model: PWK 28 YJ Black
- Venturi diameter: 28 mm
- Air filter connection: 50 mm
- Intake manifold connection: 35 mm
- Main jet: #118 (pre-installed)
- Pilot jet: #32 (pre-installed)
- Powerjet: Adjustable
- Color: Black
Suitable Applications
- Gilera Runner 125 / 180 with Piaggio Maxi engine
- Piaggio TPH 125
- Piaggio SKR 125
- Other tuned engines with compatible mounting dimensions
Important: Installation depends on the intake manifold, air filter or intake hose and available installation space. Additional modifications may be necessary.
Package Contents
- 1 Nibbi Racing PWK 28 YJ Black carburetor
- Pre-installed #118 main jet and #32 pilot jet
- Integrated adjustable Powerjet system
Note: The carburetor must be correctly tuned for the individual engine before use. Incorrect fuel mixture settings may cause engine damage.
Nibbi Racing PWK 28 – flexible tuning options for your next performance project.
