These are designed to be used on the billet aluminum spring kits from Billet Aluminum Springs. These spacers are CNC machined from billet aluminum and are designed to be used on many different spring kits. These spacer have a round profile and measure 3/16∪ thick
These spacers are also great for use on other aftermarket spring kits that require a preload spacer.
2 cnc machined billet aluminum spring preload spacer