Helper Springs for a 2002 Chevy Avalanche Z71 with 6 Inch Lift

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Question:

Hello, I was wondering if this Firestone #F4108 air spring kit would fit my vehicle. Its stated to fit 2002 Chevy Avalanche but mine is Z71 with 6 inch Fabtech suspension lift in which I replaced the rear springs that came with the Fabtech kit. Would there be a spacer or different air spring I would need to get? Will the F4108 work with this longer spring still?

asked by: Ryan G

0

Expert Reply:

Since the springs are longer than stock on your 2002 Chevy Avalanche air bags that fit inside the springs, such as # F4108 will not work. There are not spacers available that would work either. But I do have a solution for you.

You could use Timbren springs # TGMRG25C for a 1500 or # TGMRSB4S for a 2500. Then you would need 8 of the 1 inch spacers, # A25723-90AH00, 4 for each side. Timbren does not recommend using any more spacers than that so there will still be a little travel before the helper springs engage. You will also need much longer hardware because of the spacers and it will need to be obtained locally.

The problem with this is that lateral stability could be a problem because of the amount of spacers needed.

Another option would be to use SumoSprings # CSS-1125R. The space between the coils would have to be 1-1/8 inches for these to fit.

expert reply by: Michael H

0

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Answer 1

In terms of capacity, the Timbren Rear Suspension Enhancement System, #TGMRG25C, for a 2003 Chevy Avalanche 1500 has quite a bit more; a total capacity of 6,000 pounds. Compare that to the maximum 1,000 pound capacity of the Firestone Vehicle…

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Answer 2

Both the Firestone #F4108 and Air Lift #AL60769 helper springs are confirmed to fit your Cadillac Escalade as long as you don't have the auto-leveling option. If your Caddy has the auto-leveling you'll need to go with the Firestone.…

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Answer 3

It is not recommended to use any type of suspension enhancement when using a weight distribution system. The two systems will work against each other and would provide an unsafe, unpredictable ride quality. Your best option would be to make sure…

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Answer 4

For your 2018 Cadillac Escalade the Timbren Rear Suspension Enhancement System #TGMRYS4 will work great. These jounce-style springs are confirmed to fit your vehicle and will simply replace the factory bump stop on the frame to provide additional…

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Answer 5

What I recommend is going with the Timbren vehicle suspension #TGMRYS4 (2WD or 4WD)because the hollow rubber springs sit above the axle and they are easy to install. It will also be compatible with your auto-leveling system. Also, the Timbren…

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Answer 6

I spoke with my contact over at Timbren about helper springs #TGMRYS4. The overall height of the whole assembly is 4-3/4 inches. The spring by itself is 3-3/4 inches. You'll want an inch to an inch and a half of space between the frame/axle and…

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Answer 7

We sure do! For the rear axle of your 2018 Cadillac Escalade I recommend the Timbren Rear Suspension Enhancement System #TGMRYS4. These are confirmed to fit your vehicle and will simply replace the factory bump stops on the frame to provide…

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Answer 8

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Helper Springs for a 2002 Chevy Avalanche Z71 with 6 Inch Lift

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