YJRHHW Limited Slip Differential — E46 / E90 / E91 / E92 / E93

YJRHHW constructs this unit from high-grade metal throughout, designed to handle the kind of sustained torque loads that open differentials simply weren't built for. Whether that means repeated full-throttle corner exits on track or aggressive back-road driving, the robust internal construction is purpose-built for conditions beyond everyday street use. It meets or exceeds OEM specifications for fit, finish, and function — so integration with your existing drivetrain hardware is clean and precise.

Every unit leaves the factory having passed both dyno and road testing, which means the LSD you receive has already proven itself under real load conditions — not just passed a visual inspection on an assembly line. That's a meaningful distinction for a component that lives inside your rear axle and directly influences how power reaches the pavement.

For E46 and E90-generation 3 Series owners, the real-world payoff is sharper, more planted corner exits and a significant reduction in inside-wheel spin when putting power down mid-corner. YJRHHW supports this unit with a 2-year warranty, providing reasonable coverage for what is a serious mechanical investment in your car's performance.