If you have 240Z hubs, but wish to convert the backside offset to that of the 260Z or 280Z (If you have 260Z or 280Z brakes), then these these hub rings will do the trick. Machined for both 4 and 5 lug bolt patterns, these add the extra thickness of the 260Z/280Z hubs to your 240Z hubs.
Billet Aluminum
Gold anodized for corosion resistance