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  • 3D scanning of the installed manifold to begin heatshield design
  • 3D printed adapter being test fitted while Gunner supervises
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  • Thermal image of original exhaust decklid after 20 minute drive, mattress installed 70 degree ambient.
  • Thermal image of RG9 exhaust decklid after 20 minute drive, mattress installed 70 degree ambient. Peak temps down 20%

Product Description

This is included in RG9 and later versions of the conversion.

NOTE: May be incompatible with existing AC line routing for those with AC already installed. May require different compressor block/line rerouting. 

This kit includes the four point exhaust hanger kit as well. The exhaust catalytic converter/manifold is purchased off-the-shelf, see guide on purchase with this link.  They cost $160-$330.


With RG9 came the introduction of the 3rd major revision to the SK-E/exhaust of the Bostig conversion.

The revision provides the following benefits:

  • Significantly greater clearance to the decklid/lower decklid temps
  • Allows use of a longer flex coupler to extend its life
  • Allows purchase of catalytic converter off-the-shelf
  • Places muffler further from AC compressor for those with AC
  • Backward compatible with current muffler, but also allows for different mufflers by changing the downpipe alone. 
  • Allows full coverage heat shielding
  • Easier O2 sensor access


The new exhaust is similar in idea to the core idea of the conversion itself: Design simple and rugged non-wearable custom parts to allow use of off-the-shelf complex wearable parts.


The new exhaust is the most technologically advanced design process workflow that has been achieved at Bostig to date. Advances in 3D scanning, 3D printing, and CAD made the design and execution possible. I wish I had access to these tools years ago!

Product Videos

Bostig 3D scanning for manifold adapter
  • Bostig 3D scanning for manifold adapter

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RG9+ Exhaust

34.00 LBS
Calculated at checkout
Current Stock: