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

"Your customer service is absolutely top notch!! I will definitely continue to do business with you guys in the future and try to send as many people your way as I can. Thank you again!! Brandon "

"Thanks for your great products,I gained app 40 to 50 hp from stock intercooler to type 14 with no other mods. App. 5 mph [on a jetski]"

"Thank you for the quick response. I've had nothing but good service in the past and will continue to be a customer in the future."

"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! "

"Keep up the good work,"

"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!"