D&D Machine Doubler NP231 - $650

[Wildman]

D&D Machine Doubler NP231
Mt Pleasant, MI

D&D Machine doubler all set up with an NP231 reduction box. Good condition. Not easy to come by considering they don't make these anymore. Has an upgraded 6 gear planetary and 23 spline input for coupling to most older jeep transfer cases. Also have a 21 spline input if desired that I can include for an extra $25. Add an extra 2.72 reduction to your rig!

https://www.facebook.com/groups/cra...80199292290177/?sale_post_id=3180199292290177
You'll have to join the group to see this.

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[RINC]

I am book faceless but am curious.

 

[P man]

So being totally clueless about doublers..how many parts are specific to this doubler? I'm having flashbacks of the Tera flex case I had and no readily avaialble parts so it went into the scrap bin.

 

[Wildman]

I am book faceless but am curious.

I'll help ya out where I can.

So being totally clueless about doublers..how many parts are specific to this doubler? I'm having flashbacks of the Tera flex case I had and no readily avaialble parts so it went into the scrap bin.

The case is a stock 231 front section and the output is cut off.

So the doubler parts are the shaft/clocking plate/block off plate.

This might help explain it better. https://www.frogfab.com/custom-build/231-300-doubler-kit

https://froehlichsuspension-com.3dcartstores.com/NP231-Doubler-Adapter_p_14.html

And a Pirate thread when the doublers first came out.

https://www.pirate4x4.com/threads/np231-doubler-case.507163/

 

[Wildman]

Here's a thread on here about doublers that might help explain stuff a bit more. What is NICE about this one is that it has the better planetary setup with 6 gears instead of the stock 3 gears. Much stronger. And it's already welded and ready to be installed. If I'd stretched my TJ longer I'd love to throw this in front of my STaK's 3 speed which would then give me 2 hi & 4 low ranges.