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

"Hi There, Nothing to say but AWESOME! Thanks for your great service and really really fast shipment. I'll pass your site on to my friends."

"cold air intake for my civic at 1/4 the price, and 10X the looks"

"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!"

"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 "

"Hi, many thanks for your help. Great customer service :) .. as good as your products Have a great Friday Cheers"

"My blue silicone vacuum hoses i ordered from you in 2008 still look brand new today.Great hoses.Thanks "