3rd Gen General Discussion The place for non-technical discussion about 3rd Gen RX-7s or if there's no better place for your topic

Polyurethane front bumper question...

Old Sep 22, 2019 | 06:32 AM
  #1  
ecurbd02's Avatar
Thread Starter
Senior Member
Tenured Member: 5 Years
Liked
Loved
iTrader: (7)
 
Joined: Dec 2017
Posts: 723
Likes: 63
From: ohio
Polyurethane front bumper question...

So I recently purchased a KBD 99spec front bumper, for a good price, which is made of polyurethane. My concern is that it seems pretty flimsy. I have a 92 fd with a 99 oem front bumper, but I don’t have any of the support, which I believe consists of the foam and rebar. So I guess my question is, if I get it painted and mounted, will it be flimsy enough to where it will warp too much and crack the paint while driving? Or are they usually pretty stable once installed? Thanks!
Reply
Old Sep 22, 2019 | 08:07 AM
  #2  
NismoDome's Avatar
Full Member
 
Joined: Feb 2019
Posts: 50
Likes: 6
From: il
i also have a poly front 99spec bumper.
under hot summer days you will notice where it mounts to the rad support, it will start to droop down.
you will want to make some support brackets for the bottom of the lip to prevent that.
if you have a under shield that ties in that will also help.

best of luck!
Reply
Old Sep 22, 2019 | 10:42 AM
  #3  
ecurbd02's Avatar
Thread Starter
Senior Member
Tenured Member: 5 Years
Liked
Loved
iTrader: (7)
 
Joined: Dec 2017
Posts: 723
Likes: 63
From: ohio
Originally Posted by NismoDome
i also have a poly front 99spec bumper.
under hot summer days you will notice where it mounts to the rad support, it will start to droop down.
you will want to make some support brackets for the bottom of the lip to prevent that.
if you have a under shield that ties in that will also help.

best of luck!
Ok great thank you! I have the LRB undertray so I’m assuming that will work pretty well for support, I appreciate the input tho!
Reply
Old Sep 23, 2019 | 08:56 AM
  #4  
teebeekay's Avatar
Full Member
iTrader: (4)
 
Joined: Dec 2014
Posts: 196
Likes: 26
From: Wausau, WI
Mine was pretty flimsy until I installed an R1 lip. Helped stiffen it up a bit.
Reply
Old Sep 23, 2019 | 11:11 PM
  #5  
TwinCharged RX7's Avatar
Built Not Bought
Tenured Member: 15 Years
Top Answer: 1
iTrader: (14)
 
Joined: May 2008
Posts: 4,389
Likes: 964
From: Stamford, CT
How is the fitment on these?
Reply
Old Sep 25, 2019 | 04:33 PM
  #6  
ecurbd02's Avatar
Thread Starter
Senior Member
Tenured Member: 5 Years
Liked
Loved
iTrader: (7)
 
Joined: Dec 2017
Posts: 723
Likes: 63
From: ohio
Originally Posted by TwinCharged RX7
How is the fitment on these?
I haven’t personally put it on yet, previous owner said 9/10 fitment, and they’ve gotten a lot of good reviews as far as fitment so I’m hoping pretty well lol
Reply
Old Oct 5, 2019 | 07:38 PM
  #7  
RX78-1's Avatar
Junior Member
Tenured Member: 5 Years
 
Joined: Sep 2019
Posts: 13
Likes: 0
From: WI
Originally Posted by ecurbd02
So I recently purchased a KBD 99spec front bumper, for a good price, which is made of polyurethane. My concern is that it seems pretty flimsy. I have a 92 fd with a 99 oem front bumper, but I don’t have any of the support, which I believe consists of the foam and rebar. So I guess my question is, if I get it painted and mounted, will it be flimsy enough to where it will warp too much and crack the paint while driving? Or are they usually pretty stable once installed? Thanks!
Did you also get the front lip with it too? My KBD + Lip gets delivered on Wednesday. Really excited to dive in!
Reply
Old Oct 6, 2019 | 03:06 AM
  #8  
ecurbd02's Avatar
Thread Starter
Senior Member
Tenured Member: 5 Years
Liked
Loved
iTrader: (7)
 
Joined: Dec 2017
Posts: 723
Likes: 63
From: ohio
Yes I did get it! I’m not 100% sure I’m gonna use it tho, it’s just a tad more aggressive than stock, but ultimately I was after stock R1 look without the license plate
Reply
Old Mar 18, 2020 | 09:13 AM
  #9  
N2o_qc's Avatar
Junior Member
iTrader: (1)
 
Joined: Jun 2017
Posts: 33
Likes: 4
From: Montreal, Quebec
Originally Posted by RX78-1
Did you also get the front lip with it too? My KBD + Lip gets delivered on Wednesday. Really excited to dive in!
So how did the install went ?
Any pictures of the fitment ?
I also have one in order with the lip.
Reply
Old Mar 22, 2020 | 08:43 PM
  #10  
teebeekay's Avatar
Full Member
iTrader: (4)
 
Joined: Dec 2014
Posts: 196
Likes: 26
From: Wausau, WI
I have a KBD bumper. Installed an R1 lip and it helped stiffen it up. Then I revisited and properly installed the undertray by bolting it together with the lip to the bumper and now everything is nice and rigid.
Reply
Old Jul 24, 2020 | 06:21 PM
  #11  
Lupin3rd's Avatar
Full Member
 
Joined: Sep 2019
Posts: 96
Likes: 24
From: San Diego
Can anyone comment on the KBD bumper fitment and install time? Do have any pictures of the fitment.
Reply
Old Mar 28, 2021 | 12:31 PM
  #12  
TwinCharged RX7's Avatar
Built Not Bought
Tenured Member: 15 Years
Top Answer: 1
iTrader: (14)
 
Joined: May 2008
Posts: 4,389
Likes: 964
From: Stamford, CT
Anyone have pictures of one of these yet? I have a wavy 93 front bumper and car is going to get painted. Plan to either go with one of these or get the least aggressive shine offering (burnout or sanai).

Last edited by TwinCharged RX7; Mar 28, 2021 at 12:36 PM.
Reply
Old Mar 28, 2021 | 04:07 PM
  #13  
N2o_qc's Avatar
Junior Member
iTrader: (1)
 
Joined: Jun 2017
Posts: 33
Likes: 4
From: Montreal, Quebec
I installed my KBD replica this winter. Waiting on bodyshop to take the car to paint.
Fitting is not bad I think.. but I dont have experience with other bumpers.
Worst angle is like all aftermarket bumper.. when you look at it from the front, very low, you can see a gap with the hood.
Not perfect, but we'll see when it comes back from the bodyshop.
I have a picture on my instagram : @n2o_qc
Reply
Old Oct 7, 2021 | 04:00 PM
  #14  
Iconic Graphix's Avatar
Junior Member
 
Joined: Dec 2019
Posts: 17
Likes: 1
From: Long Island NY
Originally Posted by N2o_qc
I installed my KBD replica this winter. Waiting on bodyshop to take the car to paint.
Fitting is not bad I think.. but I dont have experience with other bumpers.
Worst angle is like all aftermarket bumper.. when you look at it from the front, very low, you can see a gap with the hood.
Not perfect, but we'll see when it comes back from the bodyshop.
I have a picture on my instagram : @n2o_qc
I tried looking for your ig and couldn’t find it. I kno this was a bit ago so wanted to see if you or anyone else has an update on the figment of these bumpers cause I’m coming up with mixed reviews
Reply
Old Oct 7, 2021 | 04:09 PM
  #15  
N2o_qc's Avatar
Junior Member
iTrader: (1)
 
Joined: Jun 2017
Posts: 33
Likes: 4
From: Montreal, Quebec
Originally Posted by Iconic Graphix
I tried looking for your ig and couldn’t find it. I kno this was a bit ago so wanted to see if you or anyone else has an update on the figment of these bumpers cause I’m coming up with mixed reviews
Here : https://www.instagram.com/p/CI_yCSEHNiV/
If you look in there you'll see the initial fitment. It's not bad, but definatly not perfect. Someone local here run it as is.. it's not too bad once painted... but definatly not good for OCD people lol
My car is currently in the bodyshop. Bodyshop had to fill in the gap with the hood and adjust the ones with the popups for it to be perfect.
He also took liberty to reinforce it with stainless rebar along the hood line from inside.
Really looking forward to see it painted !
I'll come back post pics here once painted.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
renjiv2
3rd Generation Specific (1993-2002)
1
Dec 21, 2014 12:38 PM
jdmdavey
2nd Generation Specific (1986-1992)
2
Dec 6, 2007 08:17 PM
Whizbang
2nd Generation Specific (1986-1992)
2
Oct 14, 2004 08:22 AM
FDNewbie
Interior / Exterior / Audio
6
Oct 21, 2003 05:13 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 05:37 PM.