Perrin Performance Diff Subframe Lockdown Kit for 2015-2021 STI & 2015-2025 WRX

PERRIN Performance Diff Subframe Lockdown Kit — STI (2015–2021) & WRX (2015–2025) Increase drivetrain rigidity and sharpen throttle response with the PERRIN Differential (Diff) Subframe Lockdown Kit. Engineered specifically for 2015–2021 Subaru STI and 2015–2025 WRX models, this kit reduces subframe movement to deliver crisper power transfer and improved handling feel. Direct-fit design — mounts cleanly to factory locations for a precise, durable installation. Improved stability — minimizes differential and subframe flex under acceleration, cornering, and hard launches. Enhanced throttle precision — quicker, more consistent power delivery to the wheels for better traction and driver confidence. High-quality materials — corrosion-resistant hardware and robust brackets built to last on street and track. Easy installation — uses factory points and includes all necessary fasteners; detailed instructions included. Perfect for enthusiasts seeking a straightforward upgrade that complements suspension, drivetrain, and power mods. Restore factory alignment under load and feel the difference in every shift and turn.