Since our inception in 1999, Inline Four has become Southern California's premier Acura and Honda performance and service facility. Our new 5,000 sq. ft. facility is well equipped with top of the line equipment so we can facilitate your needs efficiently and effectively. Our in-house Dynapack dynomometer allows us to perform vehicle pre-race testing and diagnostics, simulating realtime racing load characteristics. We also have a retail storefront where you can purchase everything found on our online store, in person. As always, our knowledgeable and friendly sales staff is aimed at helping you find the right part for your vehicle, the first time. Our online webstore, inlinefour.com is not your typical "auto botique" type of website. Our website is a direct extension of Inline Four, run by the same knowledgeable staff. Unlike other websites, we sell what we use. We can actually make reccomendations or suggestions that will put you on the right path. Knowing this, you can be confident that we are not trying to "just sell you a part". We take pride in the ability to educate our customers. If we can better educate you, our customer, then you will become a smarter and happier customer, knowing more about the products and services that we can provide to you.

Take a look around our website and see the many high-quality products and technical services that we provide. We offer products from all aspects of the vehicle. From interior trim pieces and accessories to exterior door visors and wheels. From B-series and H-series engines to K-series and F-series engines. Transmission components such as final drives and close-ratio gearsets. Even spark plugs, oil and genuine OEM parts. We have what you need, why shop anywhere else? Welcome to inlinefour.com..."The Specialists in Acura/Honda Tuning!"