Sonnax Heavy-Duty Input Shafts

Upgrade Your Automatic Transmission for Maximum Strength!

Automatic transmission input shaft failure can be a common problem as power levels increase. Sonnax offers heavy and extreme-duty input shafts that are machined from specially heat-treated steel and utilize harder outer layers and ductile inner cores for strength and resistance. These shafts are suitable for any high-horsepower street, strip, or towing application.

Sonnax Heavy-Duty Input Shafts

Upgrade Your Automatic Transmission for Maximum Strength!

Ford

Sonnax 76655A-HD Heavy Duty Input Shaft, 4R70E/4R70W/4R75E/4R75W/AODE

Sonnax 76655A-HD Heavy Duty Input Shaft, 4R70E/4R70W/4R75E/4R75W/AODE

Sonnax Heavy-Duty Input Shaft

Sonnax Heavy-Duty Input Shaft

GM

Sonnax Heavy-Duty Input Shaft GM TH400, 30-Spline Front Tooth, 300M High-Strength Steel

Sonnax Heavy-Duty Input Shaft GM TH400, 30-Spline Front Tooth, 300M High-Strength Steel

Sonnax 77733-11KB Smart-Tech Input Housing Kit with Heavy Duty Input Shaft, 4L60-E/4L65-E/4L70-E

Sonnax 77733-11KB Smart-Tech Input Housing Kit with Heavy Duty Input Shaft, 4L60-E/4L65-E/4L70-E

Sonnax Extreme-Duty Input Shaft GM TH400, 30-Spline Front Tooth, 300M High-Strength Steel

Sonnax Extreme-Duty Input Shaft GM TH400, 30-Spline Front Tooth, 300M High-Strength Steel

Sonnax Heavy Duty Input Shaft 4L80E and 4L85E

Sonnax Heavy Duty Input Shaft 4L80E and 4L85E

Sonnax 77733-10SB Heavy Duty Input Shaft, 4L60/4L60-E

Sonnax 77733-10SB Heavy Duty Input Shaft, 4L60/4L60-E

Sonnax 77733-12KB Smart-Tech Input Housing Kit w/Heavy Duty Input Shaft for GM 4L60-E, 4L65-E, 4L70-E

Sonnax 77733-12KB Smart-Tech Input Housing Kit w/Heavy Duty Input Shaft for GM 4L60-E, 4L65-E, 4L70-E

Stator Support Tube Kit

Sonnax Big Shaft Stator Support Tube Kit GM Powerglide/TH400

Sonnax Big Shaft Stator Support Tube Kit GM Powerglide/TH400