SKU: FSHF9-557
MPN: F9-557
The Ring & Pinion Ford 9in 5.57 is a precision gear set designed for performance builds and street/strip applications where optimizing the final drive ratio is essential. Built by FAST SHAFTS under part number F9-557, this 5.57 ring and pinion combination is specifically engineered for Ford 9-inch differentials, which are widely recognized in drag racing and high-performance street applications.
This gear set features precision-cut ring and pinion teeth manufactured to tight tolerances, ensuring smooth engagement and consistent power delivery under load. The design minimizes backlash and enhances durability, making it suitable for sustained track use and high-horsepower applications. Proper setup with quality bearing preload, backlash shimming, and gear oil is crucial for longevity and noise reduction.
Enthusiasts upgrading stock or worn differential gearsets will find this ring and pinion set ideal for building dedicated weekend warriors or competition vehicles. It is particularly beneficial for those running 400+ horsepower, whether naturally aspirated or boosted, ensuring optimal performance without highway cruising penalties.
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