TEIN S. Tech Springs for the VW Golf GTI MK4 (1999-2005) are an excellent step towards suspension tuning offering a more aggressive appearance and increased road holding capability. Designed to be used with OEM or OEM replacement shocks. Each application is road tested in North America for the proper balance between performance and comfort. Comes with a 1 year limited warranty, spring length is guaranteed not to sag more than 5mm, and be clear of any manufacturer defects.