To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
8,600-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.
Features:
Specs:
Whether you're hauling heavy loads in your bed or cargo area or 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 vehicle 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 your rear axle. Hollow rubber springs are bolted to the bottom of the bracket and hang down to where the bottom of the leaf 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 your 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 (2323 Customer Reviews)
8,600-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.Tough to decide, Timbrens or air suspension. I opted for Timbens in part because of price, but also no maintenance, while knowing there might be a trade-off in fine tuning the ride. I installed the Timbrens on an '09 Silverado C1500 crewcab, pulling a '13 Springdale 247FWRLLS. Last measured pin weight was 1,120 lbs. Install time was 14 minutes, clock started after purchasing and cutting a piece of 4x4 to help jack up the frame, allowing access to the space. Before Timbrens, 2" drop in bed height after hitching 5th wheel. After Timbren install, 1" drop. Ride unhitched is mostly unchanged, the bigger bumps transmit a more firm feel as the Timbrens connect though. When hitched to the 5th wheel, overall smoother, more confident ride. I'm happy with the purchase. Thank you eTrailer.com for the fast and dependable service you are known for! Tom Round Rock, TX 54799
I installed this product to help level my 2014 GMC 1500/4x4 when towing a 18ft trailer. They work great and yes I would buy them again. However it will stiffing the ride of your vehicle with no load. If you do not use your truck a lot to carry or pull loads you may not like them. They work just as instructed by the company. Took me only 15 mins to install and a good looking product. 170614
Received yesterday (quick shipping!), installed today on 2015 GMC Sierra 1500 4WD Crew Cab short box. What a difference between the Timbren's and OEM bump stop from GMC. Installed for towing large travel trailer. Used floor jack under rear hitch to raise up truck to get enough room for socket to install bolts. Use 10mm socket to remove OEM bolt & bump stop, use 17MM socket to install new bolt and Timbren. Very east installation process. 319774
Great product easy to install, took me longer to take the tire off and on than install the product. I hooked up the truck to the trailer and before it stood at 39 inches and when hooked up it dropped to 37 1/2 from the floor to the wheel weld. Overall ride is comfortable with an empty truck load. Purchesed Sunday and was delivered by Wednesday. Great product 518566
Installed last night in under 30 minutes very happy! 518226
Thay do not touch rear housing after loading One half inch gap Ronnie dobbins 572745
Heather A - 10/24/2018
Easy to install and keeps the rear from saging. Seems to help with sway control when pulling my 30 ft camper. Does make the ride a little harsher but worth it. Highly recommend. 595296
I ordered the product late one evening. When I received confirmation I noticed that I had reversed the the bill to: and ship to: immediately e-mailed CS as the office was closed. Very early the next morning I received a call from e-trailer and they immediately took, care of the situation and I had my order in two days, in Alaska! Have not yet installed the product. 210976
Peter S - 07/10/2016I put these on a Z71 1/2 ton truck. I found a gooseneck horse trailer with living qaurters 33' long total and when the dealer hooked it to my in bed hitch the truck dropped about six inches told too much trailer for my truck they suggested air bags never heard of timbren I installed the timbrens went back to dealer this time test pulled you would think its a 3/4 ton truck now only 3" sag bought trailer pulled it home thanks timbren! great product saved me from bying a different truck dealer thinks it will start selling these! 47330
FAST DELIVERY! Installed in 25 minutes. Fit was perfect. Reduced squat by 2 inches on 6000lb trailer without the WD bars attached. Should be even better with bars on. 2013 Chevy 1500. 102891
Easy to install and works exactly how I wanted. 1.25” clearance w/o a load on them. After connecting my enclosed trailer to my Chevy Silverado 1500, they were flush. Truck drives w/o the front being ‘squirly’ and the rear saggy. Nice and level. 499823
Etrailer expedited the package early due to returning customer. Parts delivered in double packaged boxes. Installed in 1/2 hour after fighting the old rusty bolts. Have not had a chance to load test yet. Will give another follow-up review after truck and trailer are loaded. 78488
Second set of Timbren’s that I have purchased for a different truck. Prefer these over air bags. Things can go wrong with air bags like loss of air, air bag punctured. These Timbren’s are made of very hard and durable rubber that can hold massive weight. These took the sag out of the back end of my truck when I hook up the camper. Sway and drift in the front end of my truck when towing is gone now. I feel like I in control of my truck when towing. These even helped with sway during towing. Not too difficult to install. Once you have the truck lifted, it took about 10-15 Mins per side to finish the installation. etrailer had them shipping amdnat my door in two days! The right package arrived for my specific Chevy Truck. Priced very fairly too. Thanks etrailer! 522266
Installed these Timbren bump stops on my 2015 GMC Sierra 1500 and couldn't be happier! You must follow install directions exactly, meaning you must take all weight off the rear axle. I blocked the front wheels and then used my floor jack at the rear hitch to lift the rear off the ground. Once this is done you have the clearance needed to get tools in for the removal of the old and replacement of the new ones. Watch the short install video and you'll have all the info you need to accomplish this. Old GM bump stops look like "toys" compared to these. Great purchase. 277397
Etrailer shipped very fast! Awesome people to deal with. The install went just as fast! Probably 20 minutes. I used a farm jack on the trailer hitch to bring both rear wheels up enough to have room to work. I put jack stands under the hitch for safety. Didn’t need to remove the wheels and they weren’t off the ground. Removed the old stop and attached the new ones. Simple! Test drove (in the rain) with nothing in the bed and never felt it till I hit a speed bump. Felt a little bump. I’ll be taking my RV out in a week. Looking forward to seeing what it will do for that. This was put on a 2018 GMC 1500 with big tow package. 581466
Caveat: I just installed these and have only road-tested unloaded. 1. As usual, etrailer filled my order quickly and accurately. 2. Installation was as easy as advertised. I did not have use of a lift and did it in my driveway. I did not remove the tires. I lifted one side at a time, blocked all other wheels and used a jack stand to back up my bottle jack. Hint #1: the higher you lift the truck, the more clearance you will have to work over the tire and insert your socket into the jounce stop and Aeron spring. Hint#2: The hole in the bottom of the factory jounce stop is small. Use a 3/8" drive 10mm socket. My 1/2" 10mm socket wouldn't go in the hole. 3. Installed, I ended up with a little more than 3/4" clearance. My road-test showed me that the Timbren SES has NO influence on unloaded ride unless you drive like an eedjit and hit speed bumps too fast (which I purposefully did.) Once you eliminate the 3/4" clearance between the SES and the axle you'll feel the extra stiffness right away, but it was not a shocking hit. I'd describe it as "authoritative." I'm happy. 566992
Great product, quick install. Fast delivery! Very pleased with product. Installed on 2007 Chevy Silverado 1500(new body style). Used Firestone air bags on last truck and always had to add air. timbrens are ready for work everyday without maintenance. 178862
Super Fast shipping. Ordered on Monday( a holiday) and reviewed Tuesday afternoon. Very easy install. Thank you. 67446
Ordered by telephone around 10:30 AM, product was delivered via UPS around 1:30 PM the next day. I had them installed that evening after getting home. I hooked up my travel trailer to my truck, everything leveled out, no sag. Can't wait to see how they do on the road pulling my trailer. 65385
Added these Timbrens with two 1" spacers on each side on a 2011 GMC Sierra with a 2" lift. Fit great, easy to install. Was more work getting old bump stops off than installing the new Timbrens with spacers. I did need to get 2" longer bolts than what was included to complete the install, but that was to be expected. 488613
I have a 2014 Silverado 1500 and 24’ gooseneck weekender horse trailer. I just got the trailer and the guy I got it from recommended the Timbren’s to me. When I first dropped the trailer on my truck empty it squatted me 4.5” in the rear. The trailer weighs just under 5,000 pounds empty. When I first pulled the trailer empty I wasn’t sure about the Timbren’s they seemed really bouncy on my road. My road is not the smoothest road though. This past weekend I loaded 3 horses into my trailer and traveled about 1.5 hours away and I was blown away at how well my truck drove and handled fully loaded. With the Timbren’s my truck barely squats now. The trailer rode a hundred times better loaded with horses, which most big trailers ride bad when empty anyway. As far as driving with no load at all the truck rides just like normal. However if you hit a big hump in the road sometimes it will be enough to make it hit the Timbren’s and gives a little jolt. As far as recommending I definitely recommend these especially if you have a 1/2 ton truck and pulling a fairly heavy load. 656849
I have waited till I had a heavy on the truck to review this product, it did a great job loaded. On a smooth road I can not tell any difference in the ride of the truck with no load. It is pretty stiff when you hit a big bump with no load. Installation was very easy. Overall I am very satisfied with this product. 504926
This has proved perfect for my application of towing our yacht. Leveled it up perfectly. Installed just as instructed. 479111
I was pleasantly surprised to find the installation procedure to be even simpler than the instructions sent with the "Timbrens". So easy even a cave man could do it. Same with the mirror extensions, very simple to install. I can't provide useful feedback (or a meaningful rating) regarding how well these products work. I haven't had a chance to use either the timbren system or the mirrors. My first trip with the trailer will be late September. I'll let you know when I get back....thanks. Dave G 99667
Dave G - 09/12/2014Easy to install. bumpers didn’t touch axle with boat attached. Loaded with fire wood and bumpers were in contact. when driving with fire wood load on truck the truck seemed to bounce on the bumpers and was a little rougher a ride than normal but the back of the truck did not sag like it did without the Timbrens installed. Not quit the same as helper springs but they didn’t jack the back of the truck up like the helpers, so I didn’t have to raise the front of the truck to Level it when empty. Ride is great when empty and I don’t have a load on it often so they’re doing the job. 502190
Do you have a question about this Vehicle Suspension?
Info for this part was:
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Helpful Link
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.