Timbren Rear Suspension Enhancement System
(4784 reviews)
Price: $465.47
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Timbren Rear Suspension Enhancement System
Item # TFRSD
Retail:$547.61
Our Price: $465.47
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Timbren Vehicle Suspension - TFRSD
- Jounce-Style Springs
- Rear Axle Suspension Enhancement
- Timbren
- Extra Heavy Duty
12,000-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:
- Improves suspension, handling and safety
- Provides additional support as needed so you always have a smooth, comfortable ride
- Allows the leaf spring ample movement while cushioning light loads
- Becomes more rigid as more weight is added
- Increases stability - providing great performance while hauling heavy loads
- Reduces vehicle sag
- Works independently - side-to-side
- Helps compensate for off-center loads
- Reduces body roll when swerving and turning corners
- Acts as shock absorbers, taking the brunt of bumps and rough roads
- Extends the life of your vehicle's suspension
Specs:
- Includes 2 Aeon hollow rubber springs, vehicle-specific brackets and hardware for simple installation
- Replaces axle bump stops on frame
- No drilling required
- Capacity: 12,000 lbs
- Do not exceed the vehicle's weight-carrying capacity
- Designed to work with a suspension system that is in good working order
- Limited lifetime warranty - satisfaction guarantee
When hauling heavy loads in the cargo area or by pulling a trailer, you will often see the rear of the vehicle sag while the front end rises. In these cases, the rear axle is handling not only the weight of the cargo, but more of the vehicle's weight as well. 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. The resistance from Timbren's Suspension Enhancement System works with the vehicle's factory suspension to keep the vehicle level and improve your driving performance.
The Timbren system has a vehicle-specific bracket that will be 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 one inch 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 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 provides increased resistance, stiffening the suspension and keeping the vehicle level.
Each hollow rubber spring works independently to support the driver's or passenger's side of the 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 hauling off-center loads.
Because the vehicle handles better with the springs, less turbulence will be passed along to the trailer helping 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 passing of a semi) because the movement from the trailer is not transferred to the vehicle. This also works to make the sway subside quicker.
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 as the rubber springs work to prevent bottoming out on rough roads.
Compared to the competition:
Timbren's suspension enhancement systems are much easier to install than air springs - no air hoses are needed to be run, no compressors or gauges to hook up, and no manual adjustments necessary. The rubber construction causes Timbren's springs to be more elastic than similar products constructed of micro-cellular urethane. More elasticity allows for a more comfortable ride because the rubber has more travel.
FRSD - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren
Installation Details
This Product Fits The Following Vehicles
- 1999 - 2006 Ford F-350, 450, and 550 Cab and Chassis F-450
- 1999 - 2006 Ford F-350, 450, and 550 Cab and Chassis F-550
Customer Satisfaction Score:
88% were satisfied with this product
12% of customers were not satisfied
- Product did not meet expectations
- Wrong item was ordered
Customer Reviews
Timbren Rear Suspension Enhancement System - TFRSD
Average Customer Rating: 4.7 out of 5 stars (4784 Customer Reviews)
12,000-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.by: Tadpole07/29/2021
It seems like it helps prevent the squat of my Ford F550 when we have loads on it. So far so good
Comments
Very good. Helps to alleviate some of the squat when we haul heavier loads
Randall S - 07/30/2022by: Randy11/20/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
The hardest part was the de-installation of the factory bump stop. Installation of the Timbren’s was simple and easy.
My truck is 2008 F250 V10 Crew Cab 4x4 with factory overload springs. I have a B&W fifth wheel & gooseneck hitch installed. I did notice the difference in towing my 34’ fifth wheel trailer. The ride and handling was improved. I would recommend them.
by: Shaughn10/21/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
About a 1/2 inch difference in gap at the bump stop perch but still within parameters. Truck sits perfect with trailer attached. Haven’t towed yet. After towing if they perform like they should will upgrade to a 5 star. Easy to install, definitely needed 2x4 and jack. 2011 Silverado ext cab with 30 ft Genisis 5th wheel.
by: Paul10/20/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
Haven’t had it on long, but so far so good. 1999 F350 dually. Bolted up nicely. Total job took 10 minutes. Have hauled two gooseneck loads of hay and truck drives SO much better. Nice and level. Money well spent so far.
by: Robert12/18/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
I installed Timbren on front and rear of Georgetown motorhome. The install was easy and the improvement in overall handling was noticeable. No more bottoming out on bad roads, and a reduction in sway or lean in and out of turns. Worth the money, especially in conjunction with my other bolt on upgrades. Safety steer, Rear sway bar, and Rear trac bar
by: Gary08/05/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
The Timbren rear suspension enhancement system helped with the truck swaying side to side when the slide in camper is on the truck.
The photos show right and left rear with Timbren’s installed (2 photos), with slide in camper on the truck (2 photos) and when the camper was removed (2photos).
by: Roger10/18/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
I have used Timberns on 2 other vehicles, a Toyota 4Runner and an S10 Blazer with out complaint.
I transport RVs as a contractor for an RV transport company. My truck is 2021 Ram 3500 crew cab, 6.7 diesel.
Because the weight of the units is different with each unit I haul I wanted an easy, no maintenance solution to maintain as level a ride as possible. I haul both bumper pull and 5th wheel units. In addition to the weight of the unit I'm hauling I can carry 110 gallons of fuel with both the factory fuel tank and my auxiliary tank. Additionally, there is the weight of my Curt 25K 5th wheel hitch, Curt 14K equalizer hitch and bars, and approximately 300 pounds in tools.
I don't have to worry about airbags not inflating. The suspension settles about an inch before making contact with the Timberns. Squat while loaded is negligible. The ride empty is the same as it was before installation. The ride loaded is smooth and controlled even when hitting large bumps at highway speeds.
Installation was simple and straightforward. It took me about a half hour.
by: Paul 01/13/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
Went on fairly easy, jacked the rear of truck up pulled out old bump stops,soapy water on new ones positioned them and with the help of two short pieces of 2×4s under each side lowered the truck, they slid right in place. Very easy. Won't be hooking up to 5th wheel for a couple of months, looking forward on how they work on truck squat. Might follow up then and give another star.
Comments
1 year later, they work as advertised, kept rear of truck at a more level stance, also a very smooth ride with very little bounce over rough highways. I would highly recommend.
Paul - 01/14/2023by: Keton09/16/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
Great product, it works perfect on my truck. Sometimes I tow up to 30k lbs including my trailer and my truck stays level. No more high beam flashing in my eyes from drivers going in the opposite direction on the road.
by: DocLane09/12/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
They definitely support and did lift my 2014 toyota tundra up about 1.5 inches.
This application with my weight has trunk riding on the cushions all the time.
That has teavel and bounce issues that do make some driving situations interesting.
I may go ahead and replace with airbags but for now support things well!
by: Robert01/18/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
I used this on my Isuzu tow truck. The blocks in and of themselves are fine, they support the weight. Here's the problem: They are pre-loaded, meaning that they always touch between the frame and the rear axle. As you load the vehicle this puts more pressure on the frame in this 5" area where the blocks are. The springs have not yet taken as much weight as they normally would. Now, all this upward pinpoint pressure bends the frame. This is what happened to me on my rollback tow truck. After many hours and now double plating the frame all is well again, but a tremendous amount of work. Yes, the blocks are fine, but the result of installing this product resulted in a bent frame. The vehicle was not overloaded and was within the GVWR.
Comments
I have reached out to the manufacturer who will be reaching out to you.
-- 
Jenny N - 01/20/2022by: Philip09/15/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
Makes my truck feel better while towing a 5th wheel camper, especially over expansion joints of the expressway.
by: Earl09/17/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
Very simple to remove and install. I took all of 15 minutes without even removing the wheels
by: Paul07/18/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
I think I will be very happy with the ride when I tow our fifth wheel, it definitely needed the extra support especially on rough roads.I chose not to use the spacers because I like the softer ride when the truck is unloaded.
by: JWK64712/02/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
2022 Ram 3500, 30 minute install time, great product. Hooked up camper without sway bars and only squat 3/4 inch, where before 4 to 5 inches. Recieved product in 3 days with etrailer staff sending me numerous emails. Great job to etrailer staff. Thanks
by: Blake 12/29/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
After a year on the road, and a few thousand miles of towing our 5th wheel, the Timbren bump-stops work great. Had air bags that required tinkering and always needed to adjust the pressures. No adjustments needed with Timbren.
Pros: Easy to install, no adjustments, adds stability while towing heavy loads.
Cons: Unloaded, makes driving over seriously large bumps a bit rough with only about an inch or so of factory suspension travel.
by: Little Doc11/29/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
I’d seen similar products rated in the 4,000 lb ratings but I went with these. I’m not a mechanic but I removed the factory bump stops and installed both these in 30 minutes or less. I used my rolling jack and lifted from the drop hitch and easily removed the old ones and soapy water and 1/4 twist and these were on. Placed a block of wood in the space between these coils and lowered the jacks then pressed it with my tractor to confirm full engagement. I carry a lot of tools on a 2020 Chevy 2500 I do feel a bit of butt bounce on large bumps but other than that I’m very pleased.
by: Jeffery08/03/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
The timbrens actually did what they were suppose to do. However, once I starter driving out west I notice the timbrens were riding on the axle which cause the speedometer to jump around depending on the road. I would recommend them if you are hauling or towing a camper or RV. I was going to contact etrailer about maybe removing a spacer for one set however the other set came as one unit. The bottom line is the Timbrens does stabilize your load for safe travels. I will be contacting etrailer soon to assist in correcting the problem...Road trip from Idaho,Colorado,Wyoming,and Utah were beautiful... Thank you etrailer
by: Will C07/07/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
I haven’t hooked up to the fifth wheel yet or else it might be a 5 star. Based on the 15 minute installation time and the price compared to air bags this appears to be a logical way to go. I will update this as I hook up and put a load on it.
by: Johnny10/15/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
I have the timbren enhancement system on my 2020 canyon. I haul a trailer with Ranger that I pull about 250 miles to hunting camp. It tows great!
by: Daniel08/04/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
Installed these with only one issue, which was on the driver side rear axle. The axle had a ABS sensor cable bracket on the axle that need to be readjusted and trimmed down. The BumpStock was hitting this bracket on one edge. So actually, it's not and exact fit. But this issue is really a FORD placement issue of that cable. So just be aware that some extra work may be needed to install them. Passenger rear side install perfectly. Next is the drive to see how much better the coach drives, heard great reviews on that
by: Kevin12/26/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
They may be a great product but they did not work on my 22 f350. Even with the spacers provided they would not make contact with the trucks axle even with a heavy slide in camper. If I am going to keep them I’ll have to make welding modifications to extend the bracket so it will work on my truck model pictures with and without the camper loaded.
I would like to update my review to say that Timbren came through and made my application work by sending me the right parts so my truck doesn’t squat and it handles my truck camper much better. Timbren has great customer service
Comments
I see what youre saying here. From the photos, it looks like you have everything set up the way it should be. 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.
-- Brooke M - 12/29/2022by: Kevin07/17/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
Worked great on our 2019 Honda Odyssey Elite to the East coast.Fully loaded with 4 people and a car top carrier,the Timbrens kept the van stable and level.
Sold the 2019 but took the Timbren system out and put them in our new 2022 Elite. Very easy to install, highly recommend.
by: J sosa10/04/2022
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
I will say they are perfect for towing but when your not towing cause they are so close to the bottom it feels stiffer when not towing! They should make long enough so that it touches besides that these are perfect
by: Patrick11/06/2021
Review from a similar Timbren Aeon Spring System in Vehicle Suspension
Too early to give a ride review but I received the TFFF53B fronts and the TFRF53A rears for my 2019 Fleetwood Southwind 35K while at a campground this week. Easy enough to change out while there. It is about.a 2 hour job to change out all 4. The front right took me the longest and you have to reuse the existing bolt. A washer should be provided because the hole in the bracket is almost as large as the bolt head. I will be placing a large flat washer there. The rears took less time to change.. I used the first and third slots in the mounting brackets and they actually put the unit more over the center of the axle than the original bump stops. Same was true in the front. No clearance issue or interference with my trac bar.
Comments
Have had these on my RV for over a year nowhere and I am completely satisfied. The fact that these always maintain contact with the axles greatly reduce body roll on turns and uneven roads.
Patrick - 11/07/202225
3501
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See what our Experts say about this Timbren Vehicle Suspension
- What Trucks Does Timbren Helper Springs FRSD FitTimbren rear helper springs # TFRSD are designed to fit the following vehicles: 1999 - 2006 Ford F-350, 450, and 550 Cab and Chassis F-450 1988 - 1998 Ford F-450 and 550 Cab and Chassis F-450 1999 - 2006 Ford F-350, 450, and 550 Cab and Chassis F-550 1988 - 1998 Ford F-450 and 550 Cab and Chassis F-550 But no 2010 models. A cab and chassis model is what they make service and utility vehicles out of. You have probably seen them on lots with the cab and no truck bed. If you can tell me...
view full answer... - Recommendations to Reduce Sag Caused by Hauling Heavy Loads and Trailer TowingThe Timbren Rear Suspension Enhancement System # TFRSD will absolutely make a big difference in reducing the sag and create resistance that works with your 2006 Ford F-550 dump truck's factory suspension to help level out heavy loads - without affecting your unloaded ride. Timbrens also can help provide weight distribution and sway control for applications where weight distribution systems cannot be used, like when towing 5th wheel or gooseneck trailers. Check out the attached FAQ for...
view full answer... - Difference Between the Two Recommended Timbren Systems for a 2003 Ford F-450 Cab and ChassisThe difference between the two part numbers is the capacity of the spring or the amount of support it can provide. Both the part # TFRSD and the # TFFSD4B (not the part # tfrtt350f) are confirmed to fit your 2003 Ford F-450 Cab and Chassis. The # TFRSD has a capacity of 12,000 lbs so it would be for heavier duty applications whereas the # TFFSD4B is for 6k loads. You want to go with the one closest to what you would need since going to heavy would cause a harsh ride and too light would...
view full answer... - Weight Distribution System for a 2002 Jayco JayhawkTo stabilize your car trailer behind your Jayco Jayhawk I recommend the Blue Ox TrackPro Weight Distribution w/ Sway Control item # BLU36FR. This weight distribution system has built-in sway control that limits side-to-side movement of your trailer. It has a tongue weight range of 200 lbs - 600 lbs and a maximum capacity of 6,000 lbs. This will do a far better job of addressing stability when pulling a trailer than the Timbren Rear Suspension Enhancement System item # TFRSD you were looking...
view full answer... - Help Controlling Body Sway as a Motorhome Travels Down the HighwayOne of the biggest complaints the motorhome owner's have is controlling body sway. There are a couple of things that you can do that might help decrease the body sway the you are experiencing. First, installing an Anti-Sway Bars, like the Roadmaster Rear Anti-Sway Bar # RM-1139-143 and the front sway bar # RM-1139-148. Installing anti-sway bars will help minimize the side-to-side and will allow your motorhome to keep an level ride. Next, installing a suspension enhancement system, like...
view full answer... - Recommended Suspension Enhancement for 2000 Fleetwood Motorhome on Ford ChassisFor your 2000 Fleetwood motorhome a little more information would help. A Ford F-550 chassis is a class C motorhome and a F-53 chassis is the class A motorhome. If you are just looking for shock absorption assistance that will help with body roll and stability, but sway control and steering are better addressed with other products. SInce you haven't hinted at that issue, I'll give you some recommendations for shock only. If you have the F-550 chassis motorhome, I recommend the Timbren...
view full answer... - Recommended Sway Control and Ride Suspension for 2004 Gulfstream Independence with Ford f-550 FrameFor your 2004 Ford F-550 motorhome chassis, the Roadmaster Rear Anti-Sway Bar # RM-1139-143 is the correct fit for your motorhome if it is up to 34 feet long. It if it longer, then you will instead use # 1139-144. The rear anti-sway is the most help out of all components. You will likely need longer u-bolts # RM-590050-00 or # RM-590050-10. Next, the Front Anti-Sway Bar # RM-1139-148 is the next best step followed by the Roadmaster Reflex Steering Stabilizer with Mounting Brackets for...
view full answer...
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