Output Shaft Support Kit – Kawasaki ZX-10R (2004–2005) When you’re chasing 1.30 (and quicker) 60-foot times, drivetrain loads skyrocket, and the risk of catastrophic output shaft failure becomes very real. This Output Shaft Support Kit is engineered to stabilize the transmission output shaft under extreme load, dramatically reducing flex, preventing breakage, and protecting your engine cases from costly damage. This is a proven upgrade for serious drag race builds where stock components simply aren’t designed to survive the power and shock of aggressive launches. FITMENT Kawasaki ZX-10 / 2004-2005 Important: The factory mechanical water pump is not compatible with this kit. An electric water pump is required for proper installation. Why You Need It Hard launches, extended swingarms, sticky tires, and high-horsepower combinations place massive side-load forces on the countershaft. Without proper support, that stress can result in: Snapped output shafts Cracked engine cases Premature bearing failure Expensive engine repairs and downtime This kit adds a critical structural support point behind the front sprocket—helping keep your drivetrain alive when the power comes in hard. How It Works Utilizes the water pump mounting locator as a rigid anchor point Support plate slides over the anchor and bolts securely to the engine cases using the included hardware A specially designed extended countershaft sprocket nut rides on an integrated bearing within the plate The bearing provides constant, stable support to the output shaft under load The result: improved reliability, reduced flex, and increased confidence on every launch.