Ford 9" Aluminum Modular Differential Housing Section Only [8 Bolt] This feature is sometimes called

This feature is sometimes called an air gap design

This is a preloaded unit allowing for a faster reacting unit

Unlike our competitors that only use 3 or 4 pinion gears

this pulley ensures optimal performance and efficiency for supercharged setups

Kit includes adapter plate to permit use of certain square bore style carburetors

Ford 9" Aluminum Modular Differential Housing Section Only [8 Bolt] This feature is sometimes calledStay on track with Speedmaster 9 in. rear end housings. These rear ends have a reputation for being tough to handle the abuse of Circle Track racing. Built for performance, Speedmaster keeps you in the race with competitive pricing and quality parts.