See the difference! We just weren't happy with any diff stud kits on the market so we decided to create our own. Our HD diff stud kits are the beefiest ones on the market with 10.9 corrosion resistant studs, extra thick stainless steel washers, and black oxide conical nuts, this kit will handle the abuse.
Brake cooling is one of the best upgrades you can do to your track car. Most brake ducting is 3" but the E30 ducts are square. Our new CAD Designed adapters takes care of this for you. A must have for any E30 track car.