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

"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 "

"Just got my order, everything looks great! Thanks."

"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!"

"Your products rock! I really enjoy your stuff, it makes building a car so much better. All the angles, bends, sizes, etc-- great stuff. I really like the new intercooler piping that has the heat cores-- too cool. "

"Its great dealing with small companies like yours that still take care of their clientele."

"[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. "