Diff Positive Power Kit

The Whiteline Performance Diff Positive Power Kit (model KDT927) is a premium differential bushing upgrade engineered for Subaru Legacy and Outback models from 1999 through 2019. This polyurethane and steel bushing pair reduces unwanted differential movement during acceleration, cornering, and load transfer, delivering improved handling response and reduced wheel hop. Suspension bushings are critical chassis components that directly impact how your vehicle transmits power to the road and controls body roll.

Whiteline's polyurethane construction with zinc oxide plating offers superior durability and compliance compared to factory rubber bushings, which degrade over time and allow excessive compliance. The steel reinforcement cores maintain structural integrity under high cornering loads while the polyurethane elastomer absorbs vibration without the harshness of solid metal-to-metal contact. This dual-material approach provides a factory-friendly installation that requires no modifications to mounting points, making it an ideal choice for both street-driven vehicles and track-focused builds seeking measurable improvements in chassis control without sacrificing ride quality.

Subaru enthusiasts, performance drivers, and shop technicians benefit most from this kit's direct bolt-in compatibility with Legacy and Outback platforms across two decades of production. Installation is straightforward for anyone with basic suspension service experience, though professional alignment is recommended after bushing replacement to ensure optimal handling geometry. The kit ships as a pair, providing complete coverage for differential mounting points and immediate improvements in acceleration traction and cornering feel.