GM 4L80 Stock Spline Automatic Transmission 300M Input Shaft [34670-01] Speedmaster 1st & 2nd gear

Speedmaster 1st & 2nd gear synchronizer shift keys with springs for Ford top loader manual transmission

The rods are x-rayed and ultrasonically tested with all surfaces shot peened and stress relieved

Stay on track with Speedmaster 9 in

plain design that adds a unique look to your engine

heat-resistant PTFE rod with a braided stainless steel cover

GM 4L80 Stock Spline Automatic Transmission 300M Input Shaft [34670-01] Speedmaster 1st & 2nd gearHigh horsepower and hard launches can cause tremendous stresses on the internal transmission components. Speedmaster automatic transmission input shafts can withstand the stresses and the added power.