Perrin Rear Differential Lockdown System (DLS) Subaru STi / WRX 02-07


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Rear Differential Lockdown; Urethane Bushings

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The Perrin subframe lockdown kit for WRX / STI 02-07 includes 2 urethane bushings, two metal sleeve washers and 2 bolts. They work together to solidify and lock the rear subframe in place, eliminating all driveline slop and that annoying thud from first to second gear. The Perrin rear diff lock down (DLS) also includes 4 urethane bushings that lock the differential by stiffening the front and rear mounts for zero movement under extreme conditions such as drag racing and road racing. This DLS removes the twisting movement from the rear differential which can cause a ''squishy'' or spongy feeling at the point of initial acceleration.

Installation Guides and Links

Installation Guide
Describes how to install Perrin's subframe lockdown system on Subaru STi / WRX 02-07



Product Review

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Perrin Rear Differential Lockdown System (DLS)
Rear Differential Lockdown; Urethane Bushings
Subaru STi / WRX 02-07
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(Based on 1 Review )
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Great kit!
This set is excellent. It is one of the most complete kits to stiffen up the rear differential. The install is easy (if your bolts aren't rusty). There IS increased NVH despite many people saying they don't notice it, but it isn't bad and the improved feel is well worth it. My only complaint is that the instructions don't advise you to thread chase/tap out the threads for the lockout bolts.
Pros: -
Cons: -
Would you recommend this product to a friend? Definetely yes