A modification package designed to transform a Subaru vehicle from its factory-standard all-wheel drive (AWD) configuration to a rear-wheel drive (RWD) system. Such a package typically includes components necessary to disable the front drivetrain, reroute power solely to the rear wheels, and potentially address any resulting mechanical or electronic imbalances. As an example, a kit might consist of a modified or replaced transmission tailshaft, front axle removal components, and electronic control unit (ECU) recalibration to prevent error codes.
The motivation behind altering the drivetrain stems from several factors. Some enthusiasts seek improved handling characteristics more akin to traditional sports cars, finding RWD provides a more engaging and potentially predictable driving experience, especially in performance driving scenarios like drifting. Furthermore, a reduction in drivetrain components can lead to a slight decrease in vehicle weight and potentially improved fuel economy, although these benefits may be marginal. Historically, the conversion has been a niche modification, primarily pursued by individuals interested in motorsport or those seeking a unique driving dynamic.