The Eibach Pro-Kit 8434.140 is a four-spring set of progressive-rate lowering springs for the first-generation Volvo S60 R. The manufacturer lists a 1.2-inch drop at both the front and rear, and the springs are built to work with factory dampers. Lowering the center of gravity reduces squat under acceleration, body roll in corners, and nose-dive under braking. Compared with stock springs, the kit also fills excess fender-well gap. Compared with cheaper generic springs, the Pro-Kit is engineered for this specific chassis, and the manufacturer backs it with its Million Mile Warranty. Search terms this kit matches include 2004-2007 Volvo S60 R lowering springs, S60 R without leveling control, Eibach Pro-Kit 8434.140 drop, and progressive rate S60 R springs.
Fitment is the main thing to confirm before you order. The manufacturer's listing specifies vehicles without Leveling Control, so check your car's rear suspension setup first. Listings show different year ranges, with some covering 2004-2007 and others 2004-2008, so verify your model year with the manufacturer. Owners on user forums say that a lowered S60 with stock shocks can show faster wear, so inspect your dampers before installation.
The manufacturer lists this kit for vehicles without Leveling Control. Confirm your car's rear suspension setup before ordering.
The manufacturer says the springs are designed to work with factory dampers. Owners on user forums report that a lowered car on worn stock shocks can wear faster, so inspect them during installation.
The manufacturer states that factory mounting hardware is reused for installation. Owners on user forums recommend replacing any fasteners that are meant to be single-use and torquing the rest to specification.
Owners on user forums report about an hour for the rear springs and about two hours for the front, though times vary with experience and tools. Front installation usually means compressing the springs to reuse the top mounts, so a spring compressor is required. Forum users also advise doing final torque with the suspension loaded to avoid creaking noises. One owner found a failing front strut during installation, so inspect the struts and bushings while the car is apart. After installation, get a wheel alignment, since the ride height change alters camber and toe.
