Add to Cart Powerflex Rear Ride Height Adjuster Shim - 11.4mm - PFR5-427 $34.25 Rear Ride Height Adjuster Shim - 11.4mm - PFR5-427 PFR5-427 is a solution for uneven ride-height issues found on RHD vehicles. It replaces the 5.7mm OE adjuster shim increasing the shim height to 11... $34.25 Add to Cart