Originally Posted by MaX-D (Post 5988052)

I'm building a TRX-4 Sport kit. As I'm building it, should I install overdrive gears or just leave it stock. This truck is a pure crawler, no trailing.

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Originally Posted by JatoTheRipper (Post 5988055)

I put OD in the front and UD in the rear of my Sport and it's a trail truck.

Originally Posted by MaX-D (Post 5988057)

Cool. I'm installing it then. I'll definitely do UD later. Funds are low right now.

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Originally Posted by JatoTheRipper (Post 5988210)

That's fine.



On NYE, I noticed my TRX-4 Sport was bouncing on a rock during a climb. OSRC said he noticed one of his trucks started hopping when he installed both OD and UD gears so it's something to keep an eye out for. It's a very interesting observation!

Originally Posted by OSRC (Post 5988213)

Just had OD installed.... with the wheels turning at different speeds and great traction, you can certainly get some hop while climbing.

Originally Posted by OSRC (Post 5988213)

Just had OD installed.... with the wheels turning at different speeds and great traction, you can certainly get some hop while climbing.

Originally Posted by MaX-D (Post 5988215)

Thanks for the heads up on this. I will probably drive it with just the OD gears in for a while.

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Originally Posted by MaX-D (Post 5988216)

Is this the case with any manufacturers truck with OD, or is it more prone with the trx4?

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Originally Posted by crazee horse (Post 5988236)

If its a trail truck then sorely by oud get a lot of tire scrub/wear through different rotational speeds?

Originally Posted by JatoTheRipper (Post 5988221)

I stand corrected. That's what I get for relying on my memory...

It made complete sense when you said it.




There's only one way to find out if you like it and if it works for you in your situations - try it. I've removed more than one "upgrade" because I didn't like how it changed whatever truck it was installed on.




That shouldn't make too much of a difference. Different suspension setups would be more or less prone to bouncing though.

Don't overthink it. As I stated, just install it and try it out. That's the only way you'll know for sure if it works for you. "thumbsup"

Originally Posted by MaX-D (Post 5988239)

I've never driven a truck with OD installed on it. Should I throw the stock gears in first and drive it, then the overdrive so I can tell the difference?

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Originally Posted by MaX-D (Post 5988239)

I've never driven a truck with OD installed on it. Should I throw the stock gears in first and drive it, then the overdrive so I can tell the difference?

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Originally Posted by MaX-D (Post 5988247)

Awesome sauce! Thanks for the quick reply gentleman. I'll drive it stock first as I don't know anyone with a stock truck, then I'll throw the OD gears in so I can tell the difference.

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Originally Posted by JatoTheRipper (Post 5988263)

. Just pay close attention to the behalf of the truck. .

Originally Posted by smog (Post 5988268)

I recently installed the underdrive ring and pinion in my rear diff. I am pleased with the performance results so far.

Originally Posted by MaX-D (Post 5988288)

Did you leave the front stock?

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Originally Posted by MaX-D (Post 5988287)

What is the behalf of the truck?


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