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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. Glad to hear muffler wrap is coming. Amber was very helpful."

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"I'm a return customer and just wanted to say great job! everything was packaged nicely, and shipped promptly. I intend to remain a lifelong customer. Thanks for the hard work."

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"...the liquid to air system I purchased from you works awesome. I have a 5 gallon fuel cell for a water tank. I fill the cell with 22#s of ice, plus water, and after a turbo run there is no ice remaining in the cell!"

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"Hi, many thanks for your help. Great customer service :) .. as good as your products Have a great Friday Cheers"

http://crorkzz.com/

" Really informative article post. Awesome."

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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!"

1.5" Parts

1.625" Parts

1.75" Parts

2.0" Parts

2.25" Parts

2.5" Parts

2.75" Parts

3.0" Parts

3.5" Parts

4.0" + Parts

Schedule 10/40

Header Wrap

Silicone Couplers

Air Filters, Tools

AN Fittings

Aluminum Radiators

Pumps, Fans, Gauges

Clamps

Aluminum Intercoolers

Blowoff Valves

Thanks 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.