S&S Cycle 84-04 BT Street Performance .585in Valve Spring Kit

If you're working on a 1999-2004 Twin Cam 88 Big Twin with stock heads and looking to upgrade your camshafts, this S&S Cycle Street Performance Valve Spring Kit is a solid option. This kit is designed to handle camshaft lift up to 0.585 inches, giving you more flexibility when choosing performance cams for your ride. It's built to work with a wide range of Harley-Davidson models, including popular bikes like the Road King, Electra Glide, and Dyna Super Glide.

What you get in this kit are the springs themselves, along with top and bottom collars, keepers, and shims, so you have the necessary pieces to get the job done right. The springs feature a single wire conical shape, which is a common design for performance valve springs. This setup helps ensure consistent valve control, especially as you increase engine performance. It’s a well-built kit that provides the foundation for improved engine breathing.

When you're upgrading your valve springs, it's always a good idea to consult your service manual for the specific installation procedures for your Harley-Davidson model. This ensures everything is torqued correctly and installed as the manufacturer intended.