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Old 08-25-2019, 08:49 AM   #1
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Location: Henderson Nevada
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Replacing my shocks. Update on air leaks

Well after 3 trips to different shops I finally got my air leaks stopped. Many leaks in the real selenoids. Replaced all O rings

Sheís holding air and level and Iím starting to fell after a year of constant upgrades /repairs/ service to chassis and house Iím getting the reason why people love country coach. When functioning as built sheís a dream.

So now Iím replacing shocks. My coach has 120,000 miles on it and these are original. I called Kevin as I am a subscriber to his service and he gave me part numbers

Rear Shocks: #90-1951SP2P

Front Shocks: #90-2497SP1

Tag Shocks: #8805-1011

I had the shop Iím at in Vegas order these but after reading all this info on shocks it appears these OEM replacements would not be the choice for most

I have not had installed yet and Iím sure for shipping cost I can replace or upgrade.

Is it possible that the 15 years since mine were installed the Koni sp1 have been improved to be the right choice ?

Appreciate the assistance


Tom Z
2005 Country Coach Magna 630 Rembrandt
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Old 08-25-2019, 11:04 PM   #2
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If not too late, and if it's available for your coach - I think you'd be much happier with the Koni EVO-99's. It's like the FSD, just much more robust, as it was developed to support the large highway traveling busses in Europe.


On the rear's and tag's, suggest you see if Koni SP3 Adjustable shocks are available for your size.

Since you have some model numbers, call Koni's Tech Support to ask about the rears. Or if you do cal Brazel's on the EVO-99's, review with them too...

Best of luck to you. The SP1's would have been working pretty hard on your IFS! At least you had the 90 series, vs the 88 series of SP1's that were installed on my real Allure's - same shock I had on my 18K F53 chassis on my T-28 Bounder. The IFS just overwhelmed them!


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Old 08-25-2019, 11:36 PM   #3
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The magna front suspension is a challenging to damper. With the ifs the shock placement creates a 2-1 load ratio so with 9k thats 18k that needs to be slowed down. That kind of load will just walk all over shocks and work the hell out of them.
From my reading the koni evo99s or the more expensive king 3 inch. The 3inch bore has almost 4 times less internal presure due to the piston displacement.
Mine has fsds on the rear and they seemed to work ok but the rear shocks have half the load of the front.
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Old 08-26-2019, 06:35 AM   #4
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Replacing my shocks. Update on air leaks

In a pinch last spring I had to replace my Roadkings with Koniís due to a broken joint on a Roadking. Iíve had them repaired and this morning Kaiser will install them for me.

The Koniís I bought in a pinch were the adjustable ones but not the EVO99ís. Wish I had because these ones donít perform as well as the RKís. I guess Iíll keep them as spares.

I also replaced my drive shocks this summer. Henderson sold me 9044-1004 with limiting straps. They seem to be OK.
Gwen & Curtis Nikel
2009 CC Affinity
2015 Dodge RAM Ecodiesel 1500 Toad
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Old 08-26-2019, 07:44 AM   #5
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Thanks guys. Will see what I can do to change course.
Tom Z
2005 Country Coach Magna 630 Rembrandt
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air, leak, leaks, shocks

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