ULTIMATE CLASS 400-XLT KIT

• Includes all parts required for small diameter (5.8") billet aluminum rotating assembly between pump and center support
• 300m input
• 34 element sprag
• Set-up for 6 fwd and 6 direct clutch
• (up to 1200 hp)

The Coan Racing COA‑22870 “Ultimate Class” 400‑XLT Kit is a comprehensive transmission upgrade engineered for the most demanding Turbo Hydramatic 400 builds. It includes every component needed for a 5.8″ diameter billet aluminum rotating assembly between the pump and center support, featuring a 300M alloy input shaft and a heavy-duty 34-element sprag. This kit is configured for a full complement of six forward and six direct clutch plates, delivering robust durability capable of handling up to 1,200 hp.

Built to Coan’s premium “XLT” standards, the kit reduces rotating mass with lightweight yet strong billet aluminum components, while the 300M steel input shaft ensures torsional rigidity under extreme torque. The 34-element sprag provides reliable one-way clutch support essential for aggressive launches. Designed for racers and performance builders, it drops directly into TH400 cases without machining, offering a plug-and-play foundation for bracket racing, drag, or high-power street applications.

In summary, the COA‑22870 provides a turnkey performance package that balances precision, strength, and reliability, ideal for transmission builds pushing the limits of both power and performance.