"Extreme Performance" Shorty 18" w/ Instant Reaction Pro Tree 5 Brake

EXTREME PERFORMANCE SHORTY 18" W/INSTANT REACTION PRO TREE 5 BRAKE

• Steel hub
• Super shaft
• "Extreme Duty" 1.80 planetary w/alum. carrier
• Billet output shaft
• 9 clutch
• Roller bearing output
• Deep alum. pan

The Coan Racing COA‑11146‑180 “Extreme Performance” Shorty 18″ Transmission with Instant Reaction Pro Tree 5‑Brake is a high-caliber race transmission tailored for competitive Powerglide setups in tight-fitting builds. Its compact 18″ housing is built around a rugged steel hub and reinforced “Super Shaft,” designed to endure aggressive launch forces in drag and circle track racing. The transmission utilizes Coan’s robust “Extreme Duty” 1.80 planetary gearset housed in an aluminum carrier, ensuring precise power delivery under extreme load conditions.

Featuring a Pro Tree 5-brake valve body, this unit allows quick and accurate brake engagement and release. A billet output shaft paired with an 9‑clutch drum and roller-bearing supported output ensures superior durability and pressure containment while the deep aluminum pan enhances fluid capacity and cooling under extended use. The COA‑11146‑180 offers a plug-and-play, race-ready solution delivering explosive performance in compact fitments.