Paxton Superchargers 10-Rib 4.25" Supercharger Drive Pulley (1986-1993 Mustang) 4PFA031-425
10-Rib 4.25" Supercharger Drive Pulley for Fox Body Mustang Applications
The Paxton Superchargers 10-Rib 4.25" Supercharger Drive Pulley (PN 4PFA031-425) is engineered for 1986-1993 Ford Mustang platforms equipped with Paxton or Vortech centrifugal supercharger systems utilizing a 10-rib drive configuration. This pulley emphasizes stable belt engagement and consistent drive performance for supercharged Fox Body builds operating under sustained load.
With a 4.25-inch diameter, this pulley supports controlled supercharger speed tuning while the 10-rib belt profile increases contact area to help minimize belt slip at elevated RPM levels.
Performance & Drive Characteristics
- 10-rib belt configuration improves traction and load capacity
- 4.25" pulley diameter supports precise supercharger speed adjustments
- Enhances belt control in high-RPM and high-load environments
- Well-suited for street, strip, and competition Fox Body Mustang builds
Application & Compatibility
This supercharger drive pulley is intended for use with Paxton and Vortech centrifugal superchargers utilizing a 10-rib belt system on 1986-1993 Fox Body Mustang applications.
Important Installation & Tuning Notes
- Custom ECM tuning and fuel system calibration are required when changing supercharger pulley sizes
- Pulley diameter changes directly affect supercharger speed and boost levels
- Improper pulley selection may result in excessive impeller speed or engine damage
- Careful pulley sizing is critical for engine and supercharger longevity
Quick Specs
- Manufacturer: Paxton Superchargers
- Part Number: 4PFA031-425
- Pulley Diameter: 4.25"
- Belt Type: 10-Rib
- Application: 1986-1993 Ford Mustang
Emissions & Legal Notice
- Designed for off-road and competition use
- Not emissions legal for street-driven vehicles
Fitment
- 1986 Ford Mustang
- 1987 Ford Mustang
- 1988 Ford Mustang
- 1989 Ford Mustang
- 1990 Ford Mustang
- 1991 Ford Mustang
- 1992 Ford Mustang
- 1993 Ford Mustang
Why Buy from Beefcake Racing?
Beefcake Racing is an authorized Paxton Superchargers dealer with extensive experience supporting Fox Body Mustang supercharger systems. From selecting the correct pulley diameter to configuring a reliable 10-rib drive setup, our team helps ensure your build delivers consistent boost and long-term durability.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
