The world’s top engine builders have chosen this spring kit for over 20 years when refreshing these BMW cylinder heads. The dual spring in this kit has been designed to allow for additional valve lift over OEM. They are wound from super clean chrome silicon wire that has been heat treated and shot peened, which exceeds OEM specifications. The FEA designed heat treated steel retainers and basewashers offer optimal fitment, keeping lateral movement to a minimum. This kit works together as a system providing long service life.
Confirm the exact year, make, model and trim before ordering. Send us SKU 963895 with your vehicle info and we can help verify fitment.
Shipping services and final delivery cost are shown at checkout. Returns are confirmed before an RMA is issued — parts generally need to be uninstalled, unused and in original packaging. Full policy.
