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

"Great site guys! Found everything I needed at a great price!"

"I purchased a slimline radiator fan from this website. They had the best price available by far. The fan worked with zero issues."

"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. "

"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!"

"I do accept as true with all of the concepts you have offered in your post. They're really convincing and will definitely work. Still, the posts are very brief for beginners. May you please extend them a little from next time? Thanks for the post. "

"Ive bought a bunch from you guys great price and quality I recommend you guys to many of my customers"