Instant Reaction 28" w/ Pro Tree 5 Brake

INSTANT REACTION 28" W/PRO TREE 5 BRAKE

• Steel hub
• 300m alloy shaft (TH spline)
• "Extreme Duty" planetary
• 8 clutches
• Billet servo
• Deep alum pan

The Coan Racing COA‑11128 “Instant Reaction” 28″ Transmission with Pro Tree 5‑Brake is a race-focused Powerglide built for rapid, reliable launch performance. Equipped with a 5-brake Pro Tree valve body featuring reverse lockout, this transmission allows drivers to pre-charge and release the braking system instantly, enabling lightning-fast, transbrake-style starts without the risk of accidentally engaging reverse. At its core, the unit features a robust steel hub backed by an “Extreme Duty” planetary gearset and a high-tensile 300M alloy shaft with TH splines, producing a durable drivetrain designed to endure aggressive launches and high horsepower output.

With eight clutches in the drum and a billet servo housed under a deep aluminum pan, the COA‑11128 delivers consistently strong line pressure and thermal resilience under competition conditions. This 28-inch bolt-in package offers a perfect blend of structural strength, quick-launch performance, and ease of installation, ideal for drag racers who demand reliability, responsiveness, and control on the track.