Celebrating 20 years of selling the highest quality parts at the lowest prices. Guaranteed.

"[RE 600HP Water/Air intercooler kit] This is the best intercooler setup you can run on a dsm. It was better than any FMIC I have encountered. "

"Meredith, You're my favorite customer service person of all time, just to let you know how highly I think of you. I tell all my car buddies to ask for you by name."

"I'm a return customer and just wanted to say great job! everything was packaged nicely, and shipped promptly. I intend to remain a lifelong customer. Thanks for the hard work."

"Thanks for the response. We have an inside joke that you guys only hire ninjas with how fast your service is. SIS is definitely the first place I check for parts. You guys have a great thing going on there. Thanks!"

"Just wanted to say thank you. I have ordered from you guys 3 times now your shipping time is very fast, and the product is very accurate as well as high quality."

"Just wanted to drop you a line to say "thank you for my order".. I recieved it today , and I am very impressed with the quality of the hoses .. Man they are 100% super !! Great Quality!!!"