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

"My order needed a slight change and the sales team was quick to make the adjustment. once it shipped the whole order only took about 3 days to deliver 1000mi away. The parts are very good quality "

"you guys are great, place a few orders with you now, and I always receive what I ordered fast. Thanks for your services!"

"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]"

"...ive ordered from you before and love your products and fast shipping. Thanks"

"Thank you with your help great service very happy now have a nice day. Jesse"

"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!"