EMD Auto 15mm Wheel Spacer Pair With Bolts - 5x112 57.1 Center Bore A6/S6/RS6 (C5) An extremely stiff spring is

An extremely stiff spring is not required any longer

we frequently found that we were limited to ARP2000 head studs

2 quarter mile

our ARP 625+ material outperforms any stud available on the market

The Brisk Silver Racing plugs have a fine wire center electrode (not just the tip)

EMD Auto 15mm Wheel Spacer Pair With Bolts - 5x112 57.1 Center Bore A6/S6/RS6 (C5) An extremely stiff spring isOur wheel spacers are manufactured out of high quality 6061 T6 aluminum, which is black anodized for corrosion resistance. We also machine slots into the back of each spacer, for ease of removal (gone are the days of chiseling the spacer to get it off the hub!). Price includes (2) 15mm wheel spacers and (10) extended ball seat or cone seat wheel bolts. We use high quality OE spec European wheel bolts, not the cheap Chinese bolts that others sell with