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

"WONDERFUL! Shipping is blinding fast! The site is great because there is an automatic inventory counter to tell you what is in or out of stock. Great site! Ordered from them several times without a hitch at all. And not to mention that their prices are CHEAP! "

"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!"

"First I would like to say thank you for the great reliability to shipping and guarantee that your site provides and your customer service is outstanding! I wish everyone is as reliable and this easy to work with."

"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! "

"i have their W2A ic core/ice box/pump, i got some tbolt clamps and couplers, also a 3" vband clamp with fittings. All very fast shipping and everything is perfect thus far."

"I finally got to test my new silicone intake and it worked perfectly fine. There are no issues with the hoses colapsing like my friends suggested might be a problem. Thank you! Thanks to Holly, Sean and Jon for quick feedback about fitment!"