Lower the rear of my Trail Boss

saber · May 3, 2019

I only haul a dirt bike in my truck and like a level look so loading is not an issue.

I'm not getting bigger tires and don't want to raise the front any higher.

Can I take out the spring blocks out and mill them down? Are they steel or aluminum? Can I get shorter U bolts?

Thanks in advance.

CamGTP · May 3, 2019

Removing the block completely should net a 1 to 1.25in rear drop. That is, if they didn't change the block height from the previous body style and ones before that.

I removed mine on my 2016 without issue, the u-bolts had good threads still and I didn't need any extra washers to make it work. I believe they are cast aluminum because they weight almost nothing.

JR09country · May 3, 2019

Yes, what@camGTP said. Don't mill a rear block, those are to cheap to put any work into. If the blocks are 2" instead of 1.25”, just buy a ORU zero rate and that will net 1" of lift. So remove the factory block and replace with the zero rate and you "should" be level.

You shouldn't need new u bolts but I can't confirm that, I would need to measure the threads on my trail boss to see if there are enough to make up for the loss of the block.

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z1boss · May 3, 2019

9 hours ago, CamGTP said:

Removing the block completely should net a 1 to 1.25in rear drop. That is, if they didn't change the block height from the previous body style and ones before that.

I removed mine on my 2016 without issue, the u-bolts had good threads still and I didn't need any extra washers to make it work. I believe they are cast aluminum because they weight almost nothing.

The Trail Boss blocks are 2", I measured mine.

saber · May 3, 2019

11 hours ago, JR09country said:

Yes, what@camGTP said. Don't mill a rear block, those are to cheap to put any work into. If the blocks are 2" instead of 1.25”, just buy a ORU zero rate and that will net 1" of lift. So remove the factory block and replace with the zero rate and you "should" be level.

You shouldn't need new u bolts but I can't confirm that, I would need to measure the threads on my trail boss to see if there are enough to make up for the loss of the block.

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Hey JR09 What is an ORU zero rate and where do I get one? Looks like I'll need shorted U bolts as there is not much thread left.

Thanks

f8l vnm · May 3, 2019

I mean this was no disrespect but WHY!!!!???

Why not just get an RST or LT if you didn't want the rear TB height.

Good Luck , not trying to be a Di**

AJMBLAZER · May 3, 2019

58 minutes ago, saber said:

Hey JR09 What is an ORU zero rate and where do I get one? Looks like I'll need shorted U bolts as there is not much thread left.

Thanks

He’s mistaken. Not ORU. ORD Zero rate.

It’s a 1” block that bolts to the spring pack and thus reduces block related axle wrap.

https://www.offroaddesign.com/catalog/Zero Rates.htm

amxguy1970 · May 3, 2019

53 minutes ago, f8l vnm said:

I mean this was no disrespect but WHY!!!!???

Why not just get an RST or LT if you didn't want the rear TB height.

Good Luck , not trying to be a Di**

I am going to go out on a limb and say because it looks cooler and the off road image and black wheels are all the rage...

Tyler

JR09country · May 3, 2019

He’s mistaken. Not ORU. ORD Zero rate.

It’s a 1” block that bolts to the spring pack and thus reduces block related axle wrap.

https://www.offroaddesign.com/catalog/Zero Rates.htm

That's one. They probably have the shorter ubolts too, do we know if the 14bolt semi float has the same axle tube size as the axles on the T1?

I've thought about doing the same thing instead of raising the front even more. I would do the zero rate and then try the u bolt flip and see if that would work, should give the truck a level stance. The ass high look is terrible looking but I get why they do it.

https://www.offroaddesign.com/catalog/Zero%20Rates.htm

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SILVER SLED · May 3, 2019

It seems to me that the DC Trail Boss's have too much rake. I think it would look good leveled by lowering the back a little.

AJMBLAZER · May 3, 2019

1 hour ago, JR09country said:

That's one. They probably have the shorter ubolts too, do we know if the 14bolt semi float has the same axle tube size as the axles on the T1?

U bolts wouldn’t be hard to get at any good parts store.

Axle tubes...unsure of. I don’t know why they felt the need to change the 14SF into the 12SF but they obviously did. However a lot of the internal components are still the same. I wouldn’t hazard a guess until I put a tape measure to it.

Dea1276 · May 4, 2019

Follow this. Post pics if you do it. I am back and forth on leveling my truck. I think this may be the way to do it. No undue strain on the cv joints or rough ride from lifting the front to high.

Balls · May 4, 2019

9 hours ago, saber said:

Hey JR09 What is an ORU zero rate and where do I get one? Looks like I'll need shorted U bolts as there is not much thread left.

Thanks

All you need to do is get spacers (bigger nuts) that make up the difference, use them as washers.

saber · May 4, 2019

What do you guys think about lowering the rear with these shackles?

https://wulfsuspensions.com/collections/chevrolet-gmc/products/2004-2014-ford-f150-rear-shackle-leveling-lift-kit

Billet Bowtie · May 4, 2019

2 hours ago, saber said:

What do you guys think about lowering the rear with these shackles?

https://wulfsuspensions.com/collections/chevrolet-gmc/products/2004-2014-ford-f150-rear-shackle-leveling-lift-kit

I installed those on my truck they worked fine. If you can take out the lifting block I would do that first though. My truck did not have a spacer. I'm assuming just the trail boss models do because the front is lifted.

Edited May 4, 2019 by Billet Bowtie