http://www.soloperformance.com More Autocross related, but some good stuff for track day events.
Source for aluminum brake duct flanges:
Neck brace (non HANS):
Good silicone hoses, with some unique size/shape transitions:
Favorite hardware supply for bolts, drills, taps:
Wilwood Brake caliper adapters (etc):
Light 15" Racing Wheels (great for the $$):
A life frittered away disgusts God; he loves those who run straight for the finish line.
Never Ending 1.8T Corrado Project
Turbo Cabriolet / Turbo Scirocco / Track Golf IV.... a 1.8T Project Thread
New England Hillclimb Association (NEHA): www.hillclimb.org
Vermont Based VW/Audi Club: www.Dubsnorth.org
these are some of my favorites
cheap supplier for carbon fiber, fiberglass and resin.
Marine wire supplies. I get a lot of expandable braided sleeving here.
Awsome source for fuel/plumbing fittings, almost any thread/style you can think of and more than youll ever need.
Cheapest online supplier ive found for mandrel bends pipe and tube. second to local exhaust shop dumpsters.
Lots of race oriented parts.
Metal Supply including 4130 chromoly
the site kind of sucks but how about the place that makes sparco's seat brackets and harness bars. Then i know sparco has made 1 off seats for at this shops request. then you have all recaro, arai, alpinestars equipment in stock 99% of the time.
www.425motorsports.com if you like OMP
For other fellow Canucks, Blitzkrieg Autowerks in Vancouver is a good one to check out for fabrication/car set up. They specialize in VW/Audi/Porsche. Very nice work.
For racing supply: www.driversedgeautosport.com - racewear, seats, brake pads, etc.
They actually stock castrol srf - great price on Super Blue too!