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

"Its great dealing with small companies like yours that still take care of their clientele."

"hi, just thought id let you know i have recieved my order, and am very happy with it, and extremely impressed with your service. i have passed on your good deeds to a few freinds who will be buying water to air intercoolers and other accesories very soon. cheers"

"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!"

"Simply the best! Keep it up - Thanks!!"

"Thank you Cody I appreciate the great customer service and great communication with quick response. I have ordered from you previously and will continue to buy from you guys based on the pleasing and painless transactions. Thank you."

"I ordered a 45 degree angle 2.5 inch diameter coupler and I want to say I am very satisfied with the quality. Fast shipping as well. Thank you."