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7,000-lb Capacity hollow rubber springs sit above the rear axle to help stabilize and level your GMC Sierra. Provides a comfortable ride by absorbing road shock and improving stability. Ideal for trucks with slide-in campers or an in-bed salt spreader.
Features:
Specs:
Whether you're hauling heavy loads in your bed or cargo area or you're towing a trailer, you will often see the rear of your vehicle sag while the front end rises. In these cases, the rear axle is handling not only the weight of the cargo, but also more of the vehicle's weight. Because less weight is on the front axle, the front tires are making less contact with the road. Overall handling - traction, steering, and braking - is negatively affected. But the resistance from Timbren's Suspension Enhancement System works with your factory suspension to keep your vehicle level and improve your driving experience.
The Timbren system comes with custom-fit brackets that are bolted onto each frame rail above the rear axle. Hollow rubber springs are bolted to the bottom of the bracket and hang down to where the bottom of the spring sits, 1" above the axle. The inch of clearance allows the existing factory suspension to operate normally under light loads and standard terrain, ensuring the smooth, comfortable ride that you are used to.
Timbren Suspension Enhancement Systems are designed to work progressively. When the hollow rubber springs are compressed, the convoluted design causes them to quickly collapse along the folds. Once the folds are compacted, the stacked barrel shape increases resistance, stiffening the suspension and keeping your vehicle level.
Each hollow rubber spring works independently to support the driver's side or passenger's side of your vehicle. This is helpful when you swerve or make sharp turns. Each spring is activated when it is needed, so body roll is greatly reduced. The independent action also works well when you are hauling off-center loads.
Because the vehicle handles better with the springs, less turbulence will be passed along to the trailer, and this helps to keep the trailer in line. Your driving comfort is further enhanced if the trailer does begin to sway (from a gust of wind or a passing semi), because the movement from the trailer is not transferred to your vehicle. This also works to make the sway subside more quickly.
Another great feature of the rubber construction is that the springs absorb most of the road shock, creating a smoother, more stable ride overall. Wear and tear on the factory suspension is also lessened because the rubber springs work to prevent bottoming out on rough roads.
Timbren's Suspension Enhancement Systems are much easier to install than air springs - there are no air hoses to run, no compressors or gauges to hook up, and no manual adjustments to make. The rubber construction makes Timbren's springs more elastic than similar products constructed of microcellular urethane. And more elasticity allows for a more comfortable ride because the rubber has more travel.
Average Customer Rating: 4.7 out of 5 stars (5967 Customer Reviews)
7,000-lb Capacity hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. Provides a comfortable ride by absorbing road shock and improving stability. Ideal for trucks with slide-in campers or an in-bed salt spreader.
I don't know what I thought this was, but, it definitely was not that. In my mind, this is just a fancy spring stop that replaces the one supplied by the manufacturer. Because of the thickness, my truck bottomed out more and quicker than with the factory stops. I had in my head (from reading from others) that this would help the suspension softness. It did not.
I ended up putting airbags on the truck. It had weaker springs due to age (2005 model) and the stop would not help that. The airbags were a blessing. They eliminated the too-soft ride. Had I put the airbags on first, I doubt I would have ever put this product on. (Although we did find out that the factory stops were worn out and needed replacement.)
I can not, and will not, degrade this product as it is well made and it was exactly as it was advertised. It just was not the product that I needed. Make sure what you need BEFORE you buy.
Stiff ride at first. Now they have relaxed and not offering any load support. I went with coil over shocks.
Not really sure what to say there not what I expected probably going go to air bags to get a smoother ride on bumps .
It works great! It helps handle the weight of my camper and car trailer but doesn’t take away the smooth factory ride.
Overall great products really does what it's supposed to and absolutely no sag or roll one towing heavy loads
The overload boosters made a big difference in my truck’s ability to handle a truck bed camper. Works well!
No instructions were included. I tried to find something on line but I couldn't find anything that looked like my kit.
Mike L.
4/28/2018
Sorry that instructions werent included. If you use the link provided, you can see or print the installation instructions.
Helpful Links
They are great when you are loaded heavy or towing. They destroyed my pickups ride when empty. I have considered airbags ever since I installed them.
Truck rides like a go-cart after installation. The ses is resting on the axle when truck is unloaded. Not happy at all.
Heather A.
2/3/2022
There should be about 1 inch to 1 and a half inch of space between the axle and spring when the 2014 GMC Sierra 1500 is unloaded. You can achieve this by removing the spacer. That will improve the ride quality.
Great product, stopped sagging problem when pulling trailers
When towing travel trailer, too harsh of a ride, like a log wagen. Bought air lift AL59565 and they ride great.
I ordered it late Monday received it Wednesday very fast turn around good price helpful customer service overall very pleased I installed it same day using it for a trip next day Thanks
i was pleasantly surprised to how easy installation was
Everything arrived as promised been towing with the product a week or so really helps with truck Sway and bounce
it gave a terrible ride. removed from v ehical
Good product, good quality...
Used product before worked as expected service very good.
Quality,super fast shipping. Never any problems.
Easy to Install work great
Very easy install... A little early to know how well it works.
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Jenny N.
9/20/2022
The Timbren springs will be more robust and larger then the factory stops. This means when the truck is unloaded and the truck goes over bumps, the springs will hit the frame quicker which can make a rougher ride for some. Air bags are a good alternative if this would be bothersome.