Sumo Springs or Airbags?

[Dthiss]

I’m trying to decide which one to do. Who here is running air bags on their TB? What brand are you using? I’m looking at the Firestone Ride-Rite 2906 kit with the spacers and the Loadlifter 5000 Ultimate 88388. The Firestone kit looks easier to install, but I’m not sure that is a good thing or bad. I’m also looking at the Sumo Springs 1500# set. If you have any of these installed I would appreciate comments and pictures of them installed (specif I’d like to see pics of the Sumo Springs installed).

 

[Marcus016]

I just placed an order five minutes ago for Timbren GMRS15 rear SES. I wanted additional support for RV towing and didn't want to have the continual adjustment of the airbag system. I was torn on Sumo or Timbren, went with Timbren although there seems to be fans of both. I called Timbren to confirm the fitment after finding differently referenced part number on the forums. Some people used GMR15MR. Anyone have any feedback?

 

[That21TrailBossguy]

I have timbrens on my plow truck. Work great

 

[Blueicebob]

I also installed timbrens for hauling my work trailer. Works great

 

[Marcus016]

I also installed timbrens for hauling my work trailer. Works great

Do you know what part number you ordered and did you need a spacer? What gap do you have to the axle when unloaded.

 

[Dthiss]

Do you know what part number you ordered and did you need a spacer? What gap do you have to the axle when unloaded.

This is why I would love some picture of them installed.

 

[Brando]

I second the Timbrens, had them on my last truck and my current trail boss, they are great for towing in my experience. I ordered from etrailer.com along with an additional 1" spacer. There are a bunch of pictures on their product page as well.

Timbren Rear Suspension Enhancement System​

Item # TGMRCK15S

 

[Marcus016]

I received the Timbrens yesterday. I will install this weekend. I ordered the ones recommended by their tech support. I was concerned about the different part numbers quoted and the lack of the TB being an option on their selector tool.

Chevy & GMC 1500 Timbren SES Suspension Enhancement System - Rear Kit

Upgrade your Chevy or GMC suspension with the rear suspension kit from Timbren. Improve towing, stability, and ride comfort today.

timbren.com

GMRS15

Looks like they may combine the standard rubber spring with a 1" additional washer to make up the truck specific kit. I held it up to the old bump stop and it appears to give approximately the suggested 1" gap to the bump stop. I assume that the extra height bump stop on the TB accommodates for the factory lift and is what makes this part work for all 4x4 Silverados.

 

[Brando]

I received the Timbrens yesterday. I will install this weekend. I ordered the ones recommended by their tech support. I was concerned about the different part numbers quoted and the lack of the TB being an option on their selector tool.

Chevy & GMC 1500 Timbren SES Suspension Enhancement System - Rear Kit

Upgrade your Chevy or GMC suspension with the rear suspension kit from Timbren. Improve towing, stability, and ride comfort today.

timbren.com

GMRS15

Looks like they may combine the standard rubber spring with a 1" additional washer to make up the truck specific kit. I held it up to the old bump stop and it appears to give approximately the suggested 1" gap to the bump stop. I assume that the extra height bump stop on the TB accommodates for the factory lift and is what makes this part work for all 4x4 Silverados.

Sounds good, from my experience it is easier to install by removing the lower tall bump stops on the TB to give more clearance to install the bolt through the upper rubber portion.

 

[Johnny5272]

Any updates on the Timbren system? Debating Timbren or Sumo now for my 21 TB occasionally towing a 26’ travel trailer.

 

[Dsurf]

Any updates on the Timbren system? Debating Timbren or Sumo now for my 21 TB occasionally towing a 26’ travel trailer.

I've been running with sumosprings on my 22 since Aug of 22. Towing really made the rear end squat, the sumo springs help a lot. I tow a work trailer pretty frequently. They came with some different size spacers, I started with the biggest ones and changed them out after a few days. I was pretty rough ride when not towing, with smaller spacers it's perfect.

 

[Johnny5272]

I've been running with sumosprings on my 22 since Aug of 22. Towing really made the rear end squat, the sumo springs help a lot. I tow a work trailer pretty frequently. They came with some different size spacers, I started with the biggest ones and changed them out after a few days. I was pretty rough ride when not towing, with smaller spacers it's perfect.

Thanks for the update! Couple questions. Did you go with Blue? Also, the instructions say to remove the bump stop block that is attached to the axle. Did you remove or leave it in place? I’m leaning toward blue and per a sumospring rep the bump stop block didn’t have to be removed.

 

[Dsurf]

Thanks for the update! Couple questions. Did you go with Blue? Also, the instructions say to remove the bump stop block that is attached to the axle. Did you remove or leave it in place? I’m leaning toward blue and per a sumospring rep the bump stop block didn’t have to be removed.

The ones I got were black (link to them on Etrailer) I'm pretty sure I just took out the stock bump stop and swapped it out. One bolt per side. I would have gotten blue if they were all the same. I'll try to take a pic tomorrow