FAST SHAFTS F9-550 Ring and Pinion Kit, 5.50 Ratio, Ford 9-Inch

The FAST SHAFTS F9-550 Ring and Pinion Kit is designed for Ford 9-inch applications requiring a 5.50 gear ratio. This kit provides a matched ring and pinion set for drivetrain gear replacement or differential upgrades where the specified ratio and configuration are required.

The pinion features a 28-spline design, offering a clearly defined fitment specification for compatible Ford 9-inch differentials. Verify the differential application and spline requirements before installation to ensure this kit matches the vehicle or project.

With its 5.50 ratio, this FAST SHAFTS kit is intended for applications where that specific gearing is needed. The kit format combines the ring and pinion components into one product, helping simplify component selection for the differential service or build.

Part number F9-550 identifies this FAST SHAFTS Ford 9-inch ring and pinion kit. Use the brand and part number when confirming application details with your installation or drivetrain documentation.

Features:

• Brand: FAST SHAFTS
• Part Number: F9-550
• Product Type: Ring and pinion kit
• Gear Ratio: 5.50
• Application: Ford 9-inch
• Pinion Spline Count: 28 spline