Sonnax SmartShell® Heavy Duty Reaction Shell Kit 

Upgrade over factory Sun Shell:

• Stops spline stripping

• Prevents hub breakage

• Eliminates planetary bearing failure

Sonnax 2nd Gear "Corvette" Ratio Servo Kit  

• Upgrade used for high performance or heavy-duty towing applications

• Improved D-ring sealing configuration

• Increased apply area resulting in improved holding power for firmer 1-2 shifts and 3-4 shifts