"Pro Tree" Instant Reaction Trans Brake Kit - Reversed Pattern, PRN123

PRO TREE INSTANT REACTION TRANS BRAKE KIT (REVERSED PATTERN)

The Coan Racing COA‑22023 “Pro Tree” Instant Reaction Trans Brake Kit (Reversed Pattern PRN123) is a race-focused hydraulic control upgrade for Turbo-Hydramatic 400 transmissions designed to optimize launch performance while maintaining safety. This kit replaces the factory valve body with a manual, reversed-pattern setup (PRN123), and adds a Pro Tree-style trans brake that delivers instant reaction at staging while locking out reverse to prevent accidental engagement. It includes a billet solenoid, brake valve, springs, manual selector valve, updated accumulator spring, and separator plate, collectively engineered to sustain firm line pressure and rapider clutch engagement under extreme launch loads. The result is a fully manual, transbrake-enabled transmission build that offers drag racers enhanced control, consistent performance, and improved staging responsiveness without compromising reverse safety.

Replacement Parts For COA-22023:

• Separator Plate - CCP-0220590D
• Manual Select Valve - CCP-0220730A
• Trans Brake Solenoid - COA-22040
• Pro Tree Trans Brake Valve & Spring - COA-22041A
• Trans Brake Spring Kit - COA-22042
• Reverse Servo Spring - COA-22043
• Modulator, Solenoid, Case Connector O-Ring - COA-22163