Originally Posted by Elmo370z

Im looking to eventually raise my redline to 9,000 rpms. Stock springs run out at around 8500 rpms, still at that point i don't want to be pushing my stock springs to the limit every time i track or do some spirited runs and eventually have to replace themselves, hence the term kill all the birds with one stone. If you plan to stay at a 7500 rpms redline no you don't need to replace anything, you're correct on that note, but someone on also asked about the durability of stock springs, and that all to be questioned, that came straight from the manufacturer. Some people like to push the evenlope, other are just contempt with what they got.