The H&R 52485 is a Sport Spring lowering kit for the 1998-2002 Lexus RX300 (XU1 chassis). The manufacturer lists an approximate drop of 1.3 inches up front and 1.2 inches at the rear, which is enough to reduce the wide wheel-arch gap that stock RX300s show, especially on larger wheels. Owners on user forums often describe H&R as a stronger choice than some other budget spring brands, and the kit keeps your factory dampers in service, so you avoid the cost of a full coilover setup. The trade-off is a firmer ride. One owner on user forums reports that the car rides stiffer after installing lowering springs, so this is best for buyers who want a sharper stance without giving up everyday comfort.
Installation is a realistic weekend job for a home mechanic. Owners on user forums say you need a spring compressor, a ratchet, a set of 6-point sockets, a jack, and a lug wrench, and that no biggie for first time DIY applies to this type of work. Because stock shocks may wear faster on a stiffer spring, forum owners often pair the kit with upgraded dampers. Plan on a wheel alignment after the springs go in, and confirm your exact drivetrain and model year with the manufacturer before ordering. Search terms that match this product include 1998-2002 RX300 XU1 lowering springs, RX300 sport springs 1.3 front 1.2 rear, and H&R 52485 install.
The manufacturer lists approximate drops of 1.3 inches in front and 1.2 inches in the rear. Owners on user forums say the change is modest and is most noticeable when the car is parked next to a stock RX300.
Owners on user forums report that stock shocks can wear out sooner when paired with stiffer springs, and many choose to upgrade their dampers at the same time. The manufacturer's listing indicates the springs are designed to work with factory dampers.
The manufacturer lists this kit for the 1998-2002 RX300 XU1 chassis. Year listings differ across sources, so confirm your VIN and drivetrain with the manufacturer before ordering.
Owners on user forums describe this as a manageable DIY job for someone comfortable with coil spring work. Gather a spring compressor (some parts stores loan them), a ratchet, 6-point sockets, a jack, and a lug wrench. Compress each spring carefully before removing the strut hardware. Once the car is back together, get a professional alignment, since the altered ride height changes camber and toe settings.
