Pro Street Automatic Transmission

PRO STREET AUTOMATIC

• 5 pinion planetaries
• Heavy duty sunshell
• Billet servo
• Super input drum
• High performance band
• High energy 3-4 clutch pack

Built on the stout 4L60E platform, the COA‑111105 is Coan Racing’s Pro Street automatic transmission, expertly assembled for serious street and light competition use. It features a rugged five-pinion planetary gearset that delivers enhanced gear strength and torque capacity, alongside a heavy-duty sunshell and super input drum designed to resist distortion under heavy load. A billet servo, high-performance band, and a high-energy 3‑4 clutch pack work in concert to ensure crisp, consistent shifting, even under aggressive throttle applications. Each assembly is precision-built in the USA to Coan Racing’s exacting standards, delivering a powerful and durable solution for performance builds seeking reliable, street-ready driveability with competition-grade resilience.