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

"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!"

"looking forward to trying your products.haven't dealt much with an fittings and i hope that if i have any questions your company can help me out.your company came well recommended by some good friends of mine."

"you have an excellent website.Yoy have really expanded since I first ordered. I have told several of my friends at dealerships about you. Say they have passed this on to friends who were impressed."

"Howdy, just found your website and really glad I did. Really great how you are making intercooler piping AFFORDABLE. I had just paid About $180 for only a few pieces of piping, and it makes me sick...but now I know where to get it, and I'm gonna tell my buddies about this site too! "

"[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. "

"My order needed a slight change and the sales team was quick to make the adjustment. once it shipped the whole order only took about 3 days to deliver 1000mi away. The parts are very good quality "