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Celebrating 20 years of selling the highest quality parts at the lowest prices. Guaranteed.
What Our Customers Say
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"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!"
http://crrork.com/
"Hey there, You have done an excellent job. I'll certainly dig it and personally recommend to my friends. I am confident they'll be benefited from this web site."
Customer Email
"that will be ok i love the service i got from your company yal rock... i will tell all my hot rod friends about your service ,i just got my car done today and it runs very good thanks jerome..."
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"Hi There, Nothing to say but AWESOME! Thanks for your great service and really really fast shipment. I'll pass your site on to my friends."
Verified Customer
"I recently bought reducers for a modified intake. Units fit perfectly, which made the job much easier to complete. "
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"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 "
1.5" Parts
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1.625" Parts
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1.75" Parts
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2.0" Parts
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2.25" Parts
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2.5" Parts
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2.75" Parts
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3.0" Parts
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3.5" Parts
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4.0" + Parts
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Schedule 10/40
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Header Wrap
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Silicone Couplers
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Air Filters, Tools
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AN Fittings
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Aluminum Radiators
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Pumps, Fans, Gauges
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Clamps
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Aluminum Intercoolers
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Blowoff Valves
See MoreThanks for visiting! Here's a quick checklist to help you make sure you're getting the right pipes for your installation.
- Make sure your pipes have mandrel bends!
Our aluminum bends and stainless steel bends all have mandrel bends*, which are far superior to the press bends that some retailers sell. Mandrel bends maintain a uniform inner diameter through the bend, unlike press bends which are easier to manufacture and get smaller in the bend. This means that mandrel bends flow better and can be cut and welded on the bends. - Make sure your pipes look great!
Our aluminum pipes and stainless steel pipes have an incredible mirror-polished finish*. A lot of installers cut corners here, but why bother when our prices are so low for show quality products? - Make sure your pipes are the right size!
Our aluminum pipes and stainless steel pipes are listed by outer diameter*, as is typical in automotive intake, exhaust, and other piping systems. - Make sure your pipes are the correct material!
Our aluminum pipes are 6061-T grade*, with good weldability, machinability, corrosion resistance and light weight. Our stainless steel pipes are 304 Stainless Steel*, with excellent rust resistance and easy welding to many existing components.
*Information refers to our main product line - some products may vary. Please check our product descriptions for full details.