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6" diameter ring gear
They're machined from billet aluminum for lasting durability and good looks
For those with applications that require the fast and consistent action of and air shift this is exactly the shifter for you
Speedmaster offers all the accessories you will need to find the proper configuration for your supercharger combination
GM 4L80 Transmission Billet Aluminum Full Manual Valve Body - Silver 6" diameter ring gearSpeedmaster billet aluminum valve bodies are a direct replacement for your original valve body. These valve bodies shift quickly and incorporate an adjustable pressure regulator. Fully 5 axis CNC machined from billet aluminum, these valve bodies will help your project shed some weight.
