33-2040 Pinion shaft assembly +1/4" for 4" bore V-series

This S&S pinion shaft assembly is specifically engineered for high-displacement V-series engines. It is designed to fit 1984–1999 V-style 107-inch and 113-inch S&S 4-inch bore Evolution SSW engines, excluding the 4-inch XL Sportster variants. This particular shaft is a quarter-inch (+.250") longer than the standard stock shaft, making it a necessary component for specific S&S SA cases when running S&S BL, SL, SM, or stock flywheels. When you're dealing with the increased stresses of a large-bore Evo build, using precision-machined S&S internals is the only way to ensure the bottom end stays together. This assembly provides the exact tolerances required for a professional-grade engine rebuild or performance upgrade.