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

"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."

"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]"

"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!"

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

"WONDERFUL! Shipping is blinding fast! The site is great because there is an automatic inventory counter to tell you what is in or out of stock. Great site! Ordered from them several times without a hitch at all. And not to mention that their prices are CHEAP! "

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