Koni / Bilstein rear shocks

v8hgt

Well-Known Member
Joined
Mar 31, 2016
Threads
52
Messages
1,231
Reaction score
443
Location
Cheshire, UK
First Name
Nick
Vehicle(s)
Race Red GT PP Coupe
Vehicle Showcase
1
Hi guys. I have a 2017 performance pack GT and I’ve had BMR min drop springs on it for ages now. I love the stance.
Recently I’ve been thinking that the rear end feels too floaty through high speed bends and bouncy over fast undulating roads. I use it as a fast road car, not a track car.

I have no issues with the front end at all.

looking round I see loads of people recommend the frpp shock kits, but that’s 4 shocks and £800+ here. I figure I can get away with just upgrading the rear shocks. Which for me narrows it to koni sport (twin tube with adjustable rebound) for £300-380 or Bilstein B6 (mono tube non adjustable ) for a similar price. Viking and other brands are not available.
Have any of you tried a similar set up? Can anyone report on the koni or bilstein ?

 
Last edited:

OF5.0

Well-Known Member
Joined
Mar 28, 2019
Threads
14
Messages
413
Reaction score
213
Location
Pittsburgh
First Name
Scott
Vehicle(s)
2021 Shelby GT500
The Bilstein B6 shocks and rear shock mounts (Steeda, in my case) got rid of the rear bounce. In my opinion, I believe that a quality aftermarket rear shock mount upgrade is vital in order to get rid of the rear bounce by eliminating deflection that the stock rear shock mount‘s rubber bushing allows. So, if swapping out the rear shocks doesn’t give you complete satisfaction, try replacing the rear shock mounts with a quality aftermarket upgrade.
 
OP
OP
v8hgt

v8hgt

Well-Known Member
Joined
Mar 31, 2016
Threads
52
Messages
1,231
Reaction score
443
Location
Cheshire, UK
First Name
Nick
Vehicle(s)
Race Red GT PP Coupe
Vehicle Showcase
1
Thanks for that reply. I’m edging towards the Bilstein b6 over the koni yellow due to the mono tube design. I suspect the frpp parts are probably made in the same factory….. keep reading bad things about konis leaking etc. Plus there is a discount on here for the Bilstein shocks.

I want to stick to the stock mounts if possible as a while ago I saw a post about aftermarket mounts ripping the body shell mounting nuts through the steel plating after hitting a pot hole (probably on much stiffer coil overs) . The stock mounts provide a sacrificial weakness in the system to prevent this and the body in this area isn’t that tough.
 

blind*guardian

Well-Known Member
Joined
Jul 20, 2019
Threads
5
Messages
154
Reaction score
94
Location
Reseda, CA
First Name
Mike
Vehicle(s)
2019 Mustang GT
I think you’ll be good with Bilsteins. Seems like a lot of people use B6s with very good things to say. I have B16s all around and that definitely got rid of all floatiness.
 

GT 550

Well-Known Member
Joined
Sep 4, 2017
Threads
29
Messages
1,757
Reaction score
1,364
Location
Australia
Vehicle(s)
Black GT MT S550
Koni Special Actives installed on mine with Eibach bump stops, no bounce present.
 


OP
OP
v8hgt

v8hgt

Well-Known Member
Joined
Mar 31, 2016
Threads
52
Messages
1,231
Reaction score
443
Location
Cheshire, UK
First Name
Nick
Vehicle(s)
Race Red GT PP Coupe
Vehicle Showcase
1
are all you Bilstein B6 users running them all round or just at the back?
 

OF5.0

Well-Known Member
Joined
Mar 28, 2019
Threads
14
Messages
413
Reaction score
213
Location
Pittsburgh
First Name
Scott
Vehicle(s)
2021 Shelby GT500
are all you Bilstein B6 users running them all round or just at the back?
As of now, I am only using them in the back. When I finally get my GT350R springs for all four corners, I will get the B6 front struts.
 

Dana Pants

Well-Known Member
Joined
Oct 11, 2018
Threads
8
Messages
642
Reaction score
526
Location
Burlington MA
First Name
Dana
Vehicle(s)
2018 GT PP1
I have Koni adjustables and it’s pretty clear that at some point the back stops being yeeted into the sky as you turn up the rebound.
 

TeeLew

Well-Known Member
Joined
Apr 27, 2020
Threads
7
Messages
2,129
Reaction score
1,317
Location
So Cal
First Name
Tim
Vehicle(s)
Honda Odyssey, Toyota Tacoma, 89 GT project, 2020 Magnetic EB HPP w/ 6M
I have Koni adjustables and it’s pretty clear that at some point the back stops being yeeted into the sky as you turn up the rebound.
?
 
OP
OP
v8hgt

v8hgt

Well-Known Member
Joined
Mar 31, 2016
Threads
52
Messages
1,231
Reaction score
443
Location
Cheshire, UK
First Name
Nick
Vehicle(s)
Race Red GT PP Coupe
Vehicle Showcase
1
Bilstein b6 here

FD32E0DB-4541-4E8A-83F4-FB9BD72B2242.jpeg
Dumb question time... Is that the stock shock mount or a different item? From my reading there is a FRPP top mount available with a different sized hole in the centre for FRPP and other after market shocks. Before buying the B6's I want to know if they will work with my stock 2017 PP mounts or if I also need to invest in a different mounting solution. Many thanks
 

tangguy

Well-Known Member
Joined
Jun 12, 2020
Threads
60
Messages
274
Reaction score
123
Location
Virginia
First Name
Raul
Vehicle(s)
2018 Mustang GT PP1
Dumb question time... Is that the stock shock mount or a different item? From my reading there is a FRPP top mount available with a different sized hole in the centre for FRPP and other after market shocks. Before buying the B6's I want to know if they will work with my stock 2017 PP mounts or if I also need to invest in a different mounting solution. Many thanks
Mine are stock 2018 PP mounts.
 

tangguy

Well-Known Member
Joined
Jun 12, 2020
Threads
60
Messages
274
Reaction score
123
Location
Virginia
First Name
Raul
Vehicle(s)
2018 Mustang GT PP1
Also, the B6 rear shock rods are little over 5mm thicker than the stock pp1 shocks. Just FYI..

762DC1FB-1125-4AA6-94D7-B0EA51C54CC5.jpeg


82529794-2CB7-4183-AF0E-0AD115D26AD8.jpeg
 

 
160 - PK Auto Designs - 1
Top