Manufacturer: TEIN. (Japanese patent number 4347712). With zero claims for stuck parts due to rust in 500,000 shock absorbers, TEIN shock absorbers are amazingly rustproof. A New Formula and a New Structure!
Though these coilovers are only around $500, do not let that fool you. The price to performance of these are amazing. For the price range of coilovers that these fall within, I would say they are probably some of the best ones. They do not ride rough, and they handle pretty well. One thing you will need is a spring compressor in order to take the top hats off of your stock suspension, but you can rent one from most auto parts stores. Overall these are a very good product for the cost, and I would highly recommend.