[Jase007]

I figured several here have been through this with Chebby / GMC SUV / Trucks.

112,xxx on my '99 k1500 Suburban time for new shocks [plus ... supersprings added in rear have increased spring rate slightly].

Here are my options:

1. Rancho 9000X 10 way adjustable [bump and rebound together I believe]; 4 for = $359.99 [had the RS5000 on my '84 CJ-7 for 6 years = good shock]

2. Rancho RSX ;4 for $229 no adjustability but ... Impact Sensor Technology.

Tenneco Automotive calls the adjustable valve system in its Monroe Reflex and Rancho RSX shocks Impact Sensor Technology. When a bump is encountered, the valve cushions the impact in 12 milliseconds by letting more fluid through. The harder the bump, the more fluid is allowed to pass, so the damping becomes progressively softer. The shock returns to its firm/control damping in 15 milliseconds. This is particularly advantageous in taller vehicles such as SUVs—the shocks are firm for flat cornering but soften to absorb road irregularities. In evasive maneuvers, the Reflex reduces body roll by as much as 12% compared to new OE shocks. In ABS braking, the Monroe Reflex reduces pitch rate up to 18%. The RSX has heavy-duty seals and includes shock boots to help withstand off-road abuse.

3. Edelbrock IAS [4 for $304.00] Patented Ricor inertia active system has gotten good reviews in the 4wd rags and initial QC / leaking issues are gone. review here and ...:

As with most self-adjusting shocks, Edelbrock designs each of its IAS (Inertia Active System) units for the specific application. Furthermore, a standard shock has two circuits (compression and rebound), whereas the IAS has a third "compliance" circuit. Edelbrock says that this circuit can sense the difference between side loads (pitch and roll during braking and cornering) and vertical forces (such as potholes) and adjust itself accordingly. For example, during cornering or nose-dive braking, the IAS switches to a higher damping force to keep the chassis stable. Over bumps or potholes, the damping force softens to allow the wheel to follow the surface irregularities without transmitting the jolts to the chassis. Furthermore, Edelbrock claims that the Inertia Active valving has a wider damping range than conventional shocks: stiffer on-road than non-adjusting shocks that are valved for "performance" and softer than those biased toward comfort.

4. Bilstein HD; 4 for $260.00 [not really a fan ... even with "digressive valving"] ... OEM on the truck, believe it or not, was Bilstein "comfort" [betha didn't even know they had one of those ]

Not really interested in KYB, Sears or Auto-zone types ...

... and No KONI shocks available for my application


Thanks in advance

[Trak Ratt]

Timely post! Was discussing this with L just the other night. Looking to replace the F-150 shocks before the Glen. Will follow with interest.

[HoodPin]

My current '01 Sub has the Delco electromagnetic fluid stuff that works extremely well, but not looking forward to their eventual replacement (AFAIK no other alternatives yet).

But a really good board for Chevy truck stuff is:
http://www.oursuv.com/boards/GMSUV0407/index.html

A couple of people on that board like the IAS stuff. Post the question there and you'll get lots of responses.

Also, one of the Board's members has a Topics website for Chevy Suburbans that's very comprehensive:
http://aplsweb.com/Topics/Topics.htm

[Jase007]

Thanks Tony.

I frequent #1s site and he even linked to my intake manifold gasket how to on this board

That's where I learned about Edelbrock IAS initial QC problems.

I agree / do believe that delco electromagnetic fluid stuff / shocks are going to be a pretty penny when it is time to replace Must ride nice and I like the concept [introduced on the Cadillacs...?].

[HoodPin]

Originally Posted by Jase007

I agree / do believe that delco electromagnetic fluid stuff / shocks are going to be a pretty penny when it is time to replace Must ride nice and I like the concept [introduced on the Cadillacs...?].

The ride quality is very good with the Delco shocks, even after 111K miles, including how they adjust when in "Tow/Haul" mode. My only complaint with my Suburban is that it isn't offered with the Duramax diesel .

[Jase007]

Interesting ... on the Rancho site it says ride around normally on 9000s with setting at #1 = softest but firmer than stock. Set to #7 of 10 for tow / haul. Seems like a lot ...

[duramax diesel] = niiiiice ....

[William Miller]

I had a earlier Tahoe with the sport suspension and those Bilstien's were pretty good. I don't really like the soft suspension on the 05 Tahoe that we drive now. Biggest culpret is the tires that I'm wearing to the bone before the Fall.
Keep us posted on your choice!

[Racer29]

IMHO Bilstein HD offer good bang for the $. The adjustable stuff is good for off roadin'.

Cheers

[Cliff Claven]

This is timely for me as well. I'm tired of replacing the Monroe shocks.

[Jase007]

Funny ... they are experiencing "technical difficulties"

$50K for some shocks and lines ... those are almost nine-fo-fo prices ...

Items In Your Cart

• Edelbrock Performer IAS Shocks $19,998.00 Remove
• Edelbrock Performer IAS Shocks $19,998.00 Remove
• Goodridge G-Stop Stainless Steel Brake Lines $9,999.00 Remove
• $49,995.00 Sub Total:
• 

From testimonies and what I have researched / read ... am leaning towards the Edelbrock IAS ... as you can see.