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.

Full rebuild kit for HD, Race, or Marine version Vortech and Paxton Superchargers
Refurbished gear set fits M90, MP90, M112, MP112, M122, MP122
supercharger rotor pack seals- left and right
Replacement input shaft bearings STREET 