2021 Genesis G80 2.5T (RG3) Sway Bars, Strut Tower Bar, Chassis Bracing Installed

[ahrajani]

I have the exact model that you do and experienced the same problem. Have you considered spring dampeners? They may be to aggressive considering the mods that you have done but they will help with the rebound effect that you are talking about. They are relatively cheap and can be installed easily at home.

I haven't seen any aftermarket dampers for this vehicle. Any links?

 

[bobo simpson]

I have the exact model that you do and experienced the same problem. Have you considered spring dampeners? They may be to aggressive considering the mods that you have done but they will help with the rebound effect that you are talking about. They are relatively cheap and can be installed easily at home.

I'd be interested in installing these. Do you have a link to compatible parts?

 

[warflea51]

I'd be interested in installing these. Do you have a link to compatible parts?

I ordered them off of Amazon. Just put in U.S. Rubbershox DraTPE coil spring buffer. For the 2021 G80 it is size B+. I tried both the CSB and the CSB pro. Just jack the car up enough to get the tire off of the ground and insert in between the springs. I used dish soap to help lubricate the spring buffers. It will raise your body up about 1/2 inch. It will look worse but the suspension will settle after a test drive. I also got spring dampers from Longacre racing for a 2010 genesis. Hope this helps.

 

[bobo simpson]

I ordered them off of Amazon. Just put in U.S. Rubbershox DraTPE coil spring buffer. For the 2021 G80 it is size B+. I tried both the CSB and the CSB pro. Just jack the car up enough to get the tire off of the ground and insert in between the springs. I used dish soap to help lubricate the spring buffers. It will raise your body up about 1/2 inch. It will look worse but the suspension will settle after a test drive. I also got spring dampers from Longacre racing for a 2010 genesis. Hope this helps.

Do you have the 2.5t or 3.5t? And did you go B+ all around?

 

[ahrajani]

I ordered them off of Amazon. Just put in U.S. Rubbershox DraTPE coil spring buffer. For the 2021 G80 it is size B+. I tried both the CSB and the CSB pro. Just jack the car up enough to get the tire off of the ground and insert in between the springs. I used dish soap to help lubricate the spring buffers. It will raise your body up about 1/2 inch. It will look worse but the suspension will settle after a test drive. I also got spring dampers from Longacre racing for a 2010 genesis. Hope this helps.

These are getting ordered today! Thanks for the tip.

 

[warflea51]

Do you have the 2.5t or 3.5t? And did you go B+ all around?

I have the 2.5T. B+ on all. Tried softer and firmer versions. I actually liked the firmer ones (pros) the best.

 

[warflea51]

These are getting ordered today! Thanks for the tip.

Glad to help. Let us know how they work out for you. They made me drive much faster than normal because of the flat corning feel.

 

[bobo simpson]

I got the front two on with no issues, it's the rear that is damn near impossible with the mudd guards rubbing into them. I had to remove those two. Thoughts on how you were able to get these installed without issues?

Below is a photo of the rear and how tight the space is



By the way, adding the front rubbershox alone is amazing so far. The problem i had with this car is it was too bouncy and not stable, and I definitely felt it in the front. I am getting a little bit of handling weirdness without the rears installed. I believe that once I get that done, this car will feel much better than before. Thank you again for the recommendation.

 

[warflea51]

I got the front two on with no issues, it's the rear that is damn near impossible with the mudd guards rubbing into them. I had to remove those two. Thoughts on how you were able to get these installed without issues?

Below is a photo of the rear and how tight the space is

View attachment 57551

By the way, adding the front rubbershox alone is amazing so far. The problem i had with this car is it was too bouncy and not stable, and I definitely felt it in the front. I am getting a little bit of handling weirdness without the rears installed. I believe that once I get that done, this car will feel much better than before. Thank you again for the recommendation.

Glad you like them! The rears can be tricky. I was able to get them in but removing them (to change firmness level) was much harder. I think I removed a top plastic screw in inner tire well. That gave me just enough movement to work my hand behind ( coming up from the inside of the tire) to remove it. You just have to work at it a little, but it can be done.

 

[ahrajani]

Here's an update.

-I ordered the size B+ U.S. RubberShox "DuraTPE" series coil spring buffers from Amazon. Link. Finally had some time to install them.

• I got all four spring buffers installed without removing any of the tires.
  
  
• For the front springs, it was pretty straightforward to slide them on and there was ample clearance.
  
  
• For the rears, much less of the coil is exposed due to the shield that's there, so installation was trickier. I tried for a good 15-20 minutes to get the buffers threaded into the channels, but it was just too narrow a space. However, the installation materials and videos say that you can cut away as much as 1/4" of the interior channel to help threading onto the spring. I used some snips and took off small strips of material. I ended up cutting about 1/8" or 3/16" of material. I still had to press very firmly and wrangle it, but there was just enough clearance to thread it onto the portion of the spring that is exposed. I then slowly rotated the buffer counterclockwise and got it threaded little by little.
  
  

• I used WD-40 and it worked fine.
  
• The ride height initially increased +3/4". After about 30 minutes, the height decreased to +1/2". By the following day, after driving the car twice for short errands, ride height was down to +1/4", which is not very noticeable with my aftermarket wheels.
  

• I haven't driven the car long enough to draw any final conclusions and both of my test drives were in a lot of rain, so I couldn't really push the car as hard as I wanted around corners. My preliminary impressions are that body roll is decreased a fair bit, the ride on highways is less bouncy/floaty, and the car seems to handle sweeping turns a bit better. Will post on some longer-term impressions after a week or two.

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[ctrcbob]

1. Ah, to be young again and care about things like that.

2. When I was younger, I had a 1970 ‘Cuda 340 AAR. Did not come with the Rear Sway Bar that brochure said it would have. I installed an aftermarket one myself.

I no longer care.
See Number 1 above.

 

[bobo simpson]

Here's an update.

-I ordered the size B+ U.S. RubberShox "DuraTPE" series coil spring buffers from Amazon. Link. Finally had some time to install them.

• I got all four spring buffers installed without removing any of the tires.
  
  
• For the front springs, it was pretty straightforward to slide them on and there was ample clearance.
  
  
• For the rears, much less of the coil is exposed due to the shield that's there, so installation was trickier. I tried for a good 15-20 minutes to get the buffers threaded into the channels, but it was just too narrow a space. However, the installation materials and videos say that you can cut away as much as 1/4" of the interior channel to help threading onto the spring. I used some snips and took off small strips of material. I ended up cutting about 1/8" or 3/16" of material. I still had to press very firmly and wrangle it, but there was just enough clearance to thread it onto the portion of the spring that is exposed. I then slowly rotated the buffer counterclockwise and got it threaded little by little.
  
  View attachment 57646

View attachment 57647

• I used WD-40 and it worked fine.
• The ride height initially increased +3/4". After about 30 minutes, the height decreased to +1/2". By the following day, after driving the car twice for short errands, ride height was down to +1/4", which is not very noticeable with my aftermarket wheels.

View attachment 57648

View attachment 57649

• I haven't driven the car long enough to draw any final conclusions and both of my test drives were in a lot of rain, so I couldn't really push the car as hard as I wanted around corners. My preliminary impressions are that body roll is decreased a fair bit, the ride on highways is less bouncy/floaty, and the car seems to handle sweeping turns a bit better. Will post on some longer-term impressions after a week or two.

After some time with the shox, are you keeping them on?

 

[ahrajani]

After some time with the shox, are you keeping them on?

Yes I’ll keep them on for at least one oil change and decide what to do after that. So far so good. When I feel the bumps, it’s a little more harsh, but it’s one and done — no constant swaying and bobbing. Definitely corners flatter. Might need to redo alignment though.

 

[bobo simpson]

Yes I’ll keep them on for at least one oil change and decide what to do after that. So far so good. When I feel the bumps, it’s a little more harsh, but it’s one and done — no constant swaying and bobbing. Definitely corners flatter. Might need to redo alignment though.

I wanted to ask you about other issues that are related to suspension and see if you've dealt with the same:

1) vehicle doesnt feel stable - feel every bump, corkscrew type of motion on rough road, passengers some times feel carsick

2) very loud road noise - sometimes almost deafening road noise and vehicle vibration.

3) bent wheels - all wheels were bent at some point in the last year due to normal pot holes. the vehicle feels heavy and low to the ground before adding the spring buffers.

I've had the following work done: new wheels, alignments every 4 months, upgrading tires to Michelin Pilot Sport 4 S, new shocks and struts, and had diagnostics on all control arms.

 

[tintin186]

KW is the only company that makes coilovers for the RG3 G80 if I recall. The V4 coilover kit retails for 41k CNY ($5700 US). Pretty pricey and wouldn't be surprised if they haven't sold a single kit yet.