06-07 Duramax LBZ Custom 5" RPI Intake Stage 2

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  • Regular price $339.99

This is our full metal 5" Cold Air Intake system for 06-07.5 LBZ Duramax, this is the biggest system on the market! 

This system uses a huge 5 Inch T6 Aluminum intake tube for ultimate air flow!

Click here to view available powder coating colors.

You will have faster spool up, lower egt's, Noticeable Horsepower gain, some Mpg gain, and a turbo whistle that will make people look when your going through town!

Our system adds Horsepower you can feel!

This system is made for stock MAF (Mass Air Flow Sensor) calibration. Meaning this system works perfect with no check engine lights, no matter if your truck is stock, or highly modified. 

Has a bolt in heat shield that is vary well sealed to keep underhood temps away from the large Filter, it provides a fresh cold air supply straight to the filter for lower egt's and better performance. It is normal to see 150-250 deg drop in egt's with this system.

We use only the best filters on all our intake systems


These are Custom built to order,  so it takes 10-20 days to ship out, depending on how many orders we have that week.

Has RPI Logo on top of heat shield lid, we can do Custom lids that say: LB7, 6.6, or other options. For custom cutouts on lid it is an extra $25



Ask a Question
  • I saw that there are 4 options for filters. Which one is the best for flow? Which is the best for filtration? Which one do you recommend to people? Thanks.

    Well the amsoil is the best seller, but green filter is really good also for flow and filtration. If it were my truck, I would use any of the 3 filters: Amsoil, aFe Pro Dry S, Green Filter

  • Does it come with rubber boot and clamps?

    Yes it does come with them, everything needed to install is included

  • Will the 5" rpi intake work with factory turbo inlet?

    Yes it will

  • Will this work with other than stock turbo inlets? Such as WCFab or HSP.

    Yes it fits with hsp or wcfab mouthpieces 

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