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Perrin Differential Subframe Lockdown System for select Subaru models is a direct-fit lockdown kit that secures the rear differential and subframe to reduce movement under load. It is specified for 2015–2021 WRX and WRX STI, 2012–2025 Impreza, and 2024–2025 Crosstrek applications, providing a straightforward upgrade for drivers seeking a more stable driveline mounting.
PERRIN 15-21 Subaru WRX & STI / 12-25 Impreza / 24-25 Crosstrek Differential Lockdown System
