Pro Street / Competition Automatic Transmission

PRO STREET/COMPETITION AUTOMATIC

• 5 pinion planetaries
• Heavy duty sunshell
• Billet servo
• Super input drum
• 300m alloy output shaft
• High performance band
• High energy 3-4 clutch pack

The COA‑111106 is Coan Racing’s premium Pro Street/Competition automatic transmission, expertly built on the robust 4L60E platform for high-powered street and competition use. This unit is built around a rugged five‑pinion planetary gear assembly that offers superior strength and torque capacity compared to standard gearsets. Reinforced by a heavy‑duty sunshell and a super input drum, it ensures structural integrity during high-load scenarios. The inclusion of a billet servo delivers precise band application control, while a 300M alloy output shaft adds aerospace-grade durability to withstand repeated stress peaks. Additionally, the transmission benefits from a high-performance band and a high‑energy 3–4 clutch pack, which together provide responsive, reliable shifting and enhanced clutch holding power. Every component is assembled in the USA to Coan Racing’s exacting standards, reflecting their commitment to delivering a transmission that blends street manners with track-ready resilience and power.