XST Maximum Duty Straight Cut Planetary - Requires Coan XST Main Shaft Kit

XST MAXIMUM DUTY STRAIGHT CUT PLANETARY

(REQUIRES COAN XST MAIN SHAFT KIT)

The Coan Racing COA‑22717 XST Maximum Duty Straight‑Cut Planetary kit is a premium-grade upgrade designed for high-performance Turbo Hydramatic 400 transmissions running Coan’s XST main shaft kit. This rugged planetary assembly combines the strength and precision of straight-cut gears with the reliability of heavy-duty materials, delivering exceptional torque-handling capability for serious race builds. Engineered to outperform stock planetary sets, the COA‑22717 is purpose-built to withstand severe load cycles and maintain sharp, consistent gear engagement under extreme conditions typical of bracket drag and high-demand street/strip applications.

Crafted in the USA to Coan’s stringent manufacturing standards, this kit ensures exact gear mesh and optimum alignment when paired with the XST shaft system. The straight-cut design offers more uniform load distribution across the gear teeth, reducing the likelihood of fatigue failure and enhancing power transfer efficiency. The COA‑22717 provides more direct drivetrain feedback and improved mechanical strength, contributing to reliable performance and longevity in tough racing environments. Whether you're building a full race-spec Turbo 400 or strengthening a street/strip transmission, the XST Maximum Duty kit delivers racer-focused durability, precision, and confidence.