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

"Best prices anywhere! Thanks!!"

"Thank you so much for the prompt service. Your silicone couplings, lengths etc. are second to none, great quality and the t-bolt clamps are top notch. Thanks for the help on my GTI-R swapped 91 sentra its really quick."

"i have their W2A ic core/ice box/pump, i got some tbolt clamps and couplers, also a 3" vband clamp with fittings. All very fast shipping and everything is perfect thus far."

"Great products, great service. Customer for life. "

"They had the exact part that I needed and I requested that it had to arrive at the location at a specific time and they performed with excellence! These guys rock "

"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!"