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

"Great products, great service. Customer for life. "

"Hi Dana, Thank you for the great customer service in upholding the in-stock guarantee! I will surely be buying my intercooler set-up from yall. Best, Ryan "

"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 "

"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!"

"Great blog! I am loving it!! Will come back again. I am taking your feeds also."

"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. "