RE: {Chrysler 300} 300F Shock Absorbers

Bob J:

The leaking KYB rear shocks has been noted on our listserver posts for about the last 10 years. Some samples seem to leak; others do not. We had an update in 2013 posted at the end of our shock installation tech page here:

The post is as follows:

2013 update on the rear shocks. Some users have noticed oil leaks from shocks after a tire change.
It may be that the KYB shock doesn't have sufficient stroke and bottoms out during a tire change, damaging the shock seals.
From the web, the KG5511 has an extended length of 21.57" and a compressed length of 13.39" for a stroke of 8.19"
The Monroe 31131 (Rock Auto recommendation for the 300K)
has an extended length of 23.375" and a compressed length of 14.125" for a stroke of 9.25"
While the KYB is 1.8"short on full extension and 1" short on stroke, I have had no problems with the KYB .

This problem evidently did not exist in older units, or had not been reported, suggesting a possible quality control problem as the basic shock design had not been altered by KYB as we know.

I had 2 of 4 rear shocks leak on 2 different cars. Since then I do not let the rear ends dangle.

Carl B.

From: Bob Jasinski
Sent: Sunday, October 23, 2022 12:04 PM
To: finsruskw@xxxxxxxxxxxxxxx; 'Cox'; 'ridgleyracing65'
Cc: 'Chrysler 300 Club International'
Subject: RE: {Chrysler 300} 300F Shock Absorbers

Dave,

Thanks for your comment, it is disturbing to read. I’ve had the KYBs on my 300G for about 14 years, and have a lift that lets all the wheels hang. I’ve never had a problem, and this is the first time I’ve heard of lift use causing damage to the shocks. Could you elaborate a bit because this is the first time I’ve heard this. Anyone else have KYBs that had this issue? As far as I know they are the best shock out there for many (not sure on the years) letter cars.

Bob J

From: chrysler-300-club-international@xxxxxxxxxxxxxxxx <chrysler-300-club-international@xxxxxxxxxxxxxxxx> On Behalf Of finsruskw@xxxxxxxxxxxxxxx
Sent: Sunday, October 23, 2022 7:28 AM
To: 'Cox' <scooter465@xxxxxxx>; 'ridgleyracing65' <ridgleyracing65@xxxxxxxxx>
Cc: 'Chrysler 300 Club International' <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: RE: {Chrysler 300} 300F Shock Absorbers

Only issue I had with them was leaking on the rears.

You cannot leave the rear axle suspended from the shocks without anything under it.

The travel will be at it’s extreme end and will induce a leak if left that way for an extended length of time.

I found this out the hard way.

Dave Schwandt

From: chrysler-300-club-international@xxxxxxxxxxxxxxxx <chrysler-300-club-international@xxxxxxxxxxxxxxxx> On Behalf Of Cox
Sent: Sunday, October 23, 2022 9:09 AM
To: ridgleyracing65 <ridgleyracing65@xxxxxxxxx>
Cc: Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: Re: {Chrysler 300} 300F Shock Absorbers

As John Hertog and I

Found out the best shocks

To firm up a big Chrysler

Are the KYBs.

They do a great job cars

Handle much better in the

Curves and ride is great

Not to firm.

Bob Haag

On Oct 23, 2022, at 10:02 AM, ridgleyracing65 <ridgleyracing65@xxxxxxxxx> wrote:

This subject is primarily about my 300F, but most probably applies to all the unibody "Letter Cars". What shocks are Club members using on their cars? My car currently has standard, probably generic, Monroe-Matics. They are just too "soft" and I can't believe they are anywhere close to the "stiffness" of the factory original units. Have any Club members found a good quality "high performance" shock for these cars?
--
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
---
You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx.
To view this discussion on the web visit https://groups.google.com/d/msgid/chrysler-300-club-international/1f9a396a-122f-4166-b87b-2c74eb5fb6d6n%40googlegroups.com.

--
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
---
You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx.
To view this discussion on the web visit https://groups.google.com/d/msgid/chrysler-300-club-international/B497767F-2C70-4D7E-8387-1BD0E4918FCA%40cox.net.