Gruppe-S Engineering is the retail subsidiary of Dynamic Autosports Inc, a market leader in the automotive performance aftermarket. Through hard-work, a philosophy of low prices, and excellent customer service, Gruppe-S/DA has maintained its position as an industry leader for the last 19 years. Now operating from our 28,000 sq.ft. headquarters in Lake Forest, Southern California, we have over $1 million USD in inventory, 12 full-time employees, 4 full service lifts, and a 1200hp in ground Mustang-dyne AWD Dynamometer. We are the one-stop shop for all your automotive performance needs.

Our online policy is restricted by minimum advertised policy from manufacturers, we will not be undersold. Please contact our sales staff over the phone if you see anything advertised for less, we will match our beat our competitors. We strive to offer you excellent pricing and service, and we feel there are many fly by night competitors in the aftermarket industry who offer low prices and then go out of business. Buying from Gruppe-S is an assurance that we will be around to take care of any warranty or problems that may arise. Having a great trusted partner and 20 years experience in our industry is a great asset to all enthusiasts.

Enjoy your experience here!