Description
Exact fit JB Performance direct fit replacement counter-clockwise billet XB-1A trim style impeller. The blades must curve in a clockwise pattern.
Direct fit for the following Powerdyne XB-1A Superchargers.
Comparisons:
XB-1A stock cast impeller:
- 50,000 maximum RPM.
- Balanced by grinding, clipping, sanding, drilling.
- Weight: xxx ounces.
JB Performance billet impeller:
- 3.6% more airflow.
- 52,000 maximum RPM.
- Direct fit with no machine work.
- Narrower center section to allow more air to flow.
- A2000 Alcoa Aluminum for stronger blade support.
- Thinner blade design to allow more air to pass through same pocket size.
- 10mm larger exducer diameter by using patented flared tip.
- Digitally designed and tested by a company that specializes in improved air flow designs.
- CNC balanced. by removing specific material with a cutting tool in the precise area.
- Crack checked with X-ray technology.
- Weight: 10.2 ounces.
- 3 year warranty against blade failure when installed by JB Performance with a full rebuild. requires the supercharger RPM to not be exceeded as published here.
Want to save even more? Trade in your un-damaged XB-1A cast impeller for $100 USD at any time.

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