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Located in the heart of the Rocky Mountains, is your # 1 source for anything diesel! We carry the most up-to-date major manufacturers in-house, with no middle man involved. We are your direct source for diesel performance parts and always offer a no-hassle return policy. Here at GOS you can rest assured that the product you purchase is the best money can buy. Customer service is our #1 priority before, during, and after the sale, which is why our technical support team is second-to-none.

With a full service shop directly attached to our warehouse, we not only sell all of the products on site, we also install them. We have five full-time ASE certified technicians with at least one tech certified under each manufacturer. What does this mean for our customers? Unparalleled support, period. Need help with torque specs? We have the answers. Need help with proper install procedures? We have the answers.

It doesn't matter if you are an online retail customer, a customer in our shop, or one of our many jobbers, your satisfaction before and after the sale is more important than our bottom line. Can't find the part or information you need? Please call us at 1-800-620-4467, or e-mail us at sales@gosperformance.com