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

"looking forward to trying your products.haven't dealt much with an fittings and i hope that if i have any questions your company can help me out.your company came well recommended by some good friends of mine."

"Your website is a life saver, i would have spent double this at my local performance shop. "

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

"Thank you. This is a sign of a good business, keep up the good customer service."

"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!"

"Thank for quick and easy solutions to our silicone needs. Your website is so well designed and everything is easy to find it only took us 3 minutes to find everything! Keep up the good work guys!"