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  1. Vehicle Suspension
  2. Timbren
  3. Bump Stops
  4. Towing/Load Leveling
  5. Rear Axle Suspension Enhancement
  6. Extra Heavy Duty
THIS ITEM IS NOT A FIT FOR
2011 Kia Optima
Timbren

Timbren Rear Suspension Enhancement System

Part Number: TFR250SDF
In Stock
$269.36
Retail:$316.90
You Save: $47.54
Vehicle Suspension
Not Confirmed to Fit

2011 Kia Optima

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6,000-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. Great Prices for the best vehicle suspension from Timbren. Timbren Rear Suspension Enhancement System part number TFR250SDF can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension - TFR250SDF

  • Bump Stops
  • Towing/Load Leveling
  • Timbren
  • Rear Axle Suspension Enhancement
  • Extra Heavy Duty
  • Suspension Only

6,000-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 when towing or hauling gear
    • 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: 6,000 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


An example of sag on a vehicle's rear axle under a heavy load

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.


Diagram of the Timbren spring installed

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.


Animation of a standard Timbren rubber spring

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.


Timbren suspension system works to prevent body roll

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.


An example of a trailers swaying

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.


An empty truck on a bumpy road without Timbren

Another great feature of the rubber construction is that the springs absorb most of the road shock, creating a smoother, more stable ride overall when loaded. Wear and tear on the factory suspension is also lessened because the rubber springs work to prevent bottoming out on rough roads.


Timbren Suspension Enhancement Compared to the Competition

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 when loaded or towing because the rubber has more travel.



FR250SDF - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren



This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.7

3552 reviews
5 Stars
(2827)
4 Stars
(462)
3 Stars
(114)
2 Stars
(68)
1 Star
(81)
6,000-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:

Would be great to have better instructions and car specific.



by:

Great product, reasonable price, easy to install and great customer service!



by:

So far so good works great, now let's see how long they last?



by:

Installed this on my 2001 Explorer. Install is easy (assemble unit, bolt on in place of existing bump stop). Annoyed to find it doesn't fit. Specs are gap 1/2"-1-1/2"; there was a gap of 2-3/4". Yeah, they sell spacers for $27 each, but it's really annoying to buy a $225 product that says it fits your truck, only to find that you have to spend 50% more to actually adapt it to your truck!



by:

Fast shipping would definitely recommend



by:

We put theese on all our trucks they work great if you use your truck to carry heavy payloads or pull trailers .



by:

Easy install. Haven't hauled my trailer yet.



by:

Worked excellent for trailering.



by:

Very easy to install took about 30 minutes. If it manages the weight of my trailer I will be more impressed with your product.



by:

Works great will never have air bags ag ain



by:

Easy to install. Works as advertised. Etrailer rocks!



by:

I have not fully loaded my Odyssey yet BUT compare to original “pacifiers” which are made from kinda tough popcorn, those timbers are looking reliable.



by:

Fast shipping



by:

Got them in yesterday took about 30 minutes to install hook up my travel trailer it help a lot I'm very please. Troy



by:

Fast shipping, just what I I ordered!



by:

easy to install, Solved my trailer bouncing over bumps problem.



by:

Got them a day ago and installed the next day. Super easy installation.



by:

Great product there leveled the load and made tow way better.

Thanks



by:

I bought a set for my F250 and like them so much that I bought a set for my F350. It prevents the vehicle from sagging in the rear when hauling towing heavy objects. Makes for a smoother and more stable riding experience.



by:

Really not sure it's doing anything. No noticeable difference when towing my camper.



by:

These were delivered quickly and installed in minutes. I can't wait to give them a ride with my Airstream in tow.



by:

Easy installation and perfect fit!



by:

Customer service was great. Fast delivery. Very easy to install. 35 minutes it was done.



by:

Very easy installation!



by:

Easy install and work well on my 2500 S uburban


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3552
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See what our Experts say about this Timbren Vehicle Suspension

  • Recommended Timbrens for a 2010 Ford F-250
    Hey Patrick! We've got two options to add Timbrens to your 2010 Ford F-250. Which one you need is going to be determined by what you use your truck for. I have listed the options below: If you haul a in bed camper, routinely haul heavy loads like rock or dirt, have a work bed setup, or use a salt spreader, you'll want the Timbren Suspension Enhancement System - Severe Service item # TFRTT350F. These have a 8,000 lbs capacity. If you tow a trailer or haul gear in your truck bed, I recommend...
    view full answer...
  • Are SuperSprings SuperSway Stops Compatible With Timbren SES on 2006 Ford F-250 XLT
    Hi Michael; the SuperSprings SuperSway Stops # SS65GR and Timbren SES # TFR250SDF install in two different locations so they can be used together on your F-250.
    view full answer...
  • Which Weight Rating Timbren Rear Suspension Enhancement Should I use on my 2009 Ford F-250
    It depends on the loads you are putting in your 2009 Ford F-250. The Timbren Suspension Enhancement Systems for F-250 rear axle have the following capacities: 6,000 pounds for part # TFR250SDF and 12,000 pounds for part # TFRTT350F. If the total weight of what is in the bed of the truck and the tongue weight of any trailer used is less than 6,000 pounds, use part # TFR250SDF. If the combined weight of what is in the bed an any trailer tongue weight is more than 6,000 pounds, use part #...
    view full answer...
  • Will Timbren # TFR250SDF Suspension Enhancement fit 2001 Ford F250 w/ B&W Gooseneck Hitch Installed
    The frame mounting plates for the B&W Turnover Ball Gooseneck Hitch attach to the outboard sides of the truck frame, while the Timbren # TFR250SDF Aeon Springs you referenced install by replacing the factory bump stops that mount to the underside of the frame. Neither system would interfere with the other. I've provided a photo showing how the gooseneck frame mounting bracket sits in relation to the factory bump stop.
    view full answer...
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  • Will Timbren Rear Suspension Enhancement System Fit 2008 Ford F-250 With 8 Inch Lift
    The Timbren Rear Suspension Enhancement System # TFR250SDF will fit your 2008 Ford F-250 but you may need quite a few spacers. You will need to measure from the frame to the axle where the Timbren would install to find the correct spacers. Timbren recommends 1/2" to 1" of clearance between the axle and the Aeon rubber spring. The height of this kit with the included spacer is 7-3/4" so you will need to subtract 8-1/4"-8-3/4" from your measurement which will tell you how many spacers you...
    view full answer...
  • Do Timbren Suspension Enhancement Springs Give a Rough Ride When Under Load on a 2008 Ford F-250
    When under load, the Timbren springs, # TFR250SDF, actually help absorb road shock rather than just transfer it to the frame where you would feel it. This also extends the life of the factory suspension components. The unloaded ride will not be affected. because this system mounts to the bottom of the frame, it will work with a 5th wheel hitch installed. I have included a link to the instructions and a link to our FAQ article on Timbren products for you.
    view full answer...
  • Suspension Enhancement Recommendation for a 2006 Ford F-250 King Ranch 4x4 and 5th Wheel Trailer
    For your 2006 Ford F-250 King Ranch, we have numerous suspension enhancement products that will help with the rear vehicle sag you are experiencing. I recommend the Timbren Rear Suspension Enhancement System, # TFR250SDF, that you have referenced. These springs will not affect the unloaded ride of your truck. When loaded that will prevent sagging, provide more roll stability, and prevent the truck from bottoming out. And, they have more than enough capacity (6,000 pounds) for your trailer....
    view full answer...
  • Helper Springs for a 2007 Ford F-250 4x4 with Overload Springs
    On a truck that has overload springs, such as your 2007 Ford F-250, the overload springs could be on the top or bottom of the stack. It is often a smaller spring, yes, and it is not necessarily bound to the other springs. If the overload springs are on the top, like in the video I have linked showing installation, you can use # SSA22. For a model that has bottom overload springs you would use # SSA13 but this seems to be less common. I have also linked the instructions for each of these...
    view full answer...
  • Recommended Towing Setup for 2005 Ford F-350 Transporting a Truck Camper and 30ft Boat Trailer
    You might not need a hitch extender or weight distribution. It is possible that a long ball mount will have the length needed to provide clearance for towing the trailer. Ball mount # 40331 measures 9-1/4 inches from the center of the pin hole to the center of the ball hole. It is rated for 16,000 pounds gross trailer weight and it has a 3 inch rise or 4 inch drop. Another ball mount to consider is the Buyers Products # 3371802225. This ball mount will provide you 16 inches from center...
    view full answer...
  • Which Timbren Rear Suspension Enhancement To Use On A 2008 Ford F-250
    I recommend going with the Timbren Rear Suspension Enhancement System Item # TFR250SDF for your 2008 Ford F-250. These are designed to support the weight in the back of the truck. Since your hauling a 5th wheel and the hitch weight is only 1430lbs the Timbren Rear Suspension Enhancement System Item # TFR350SDF would be overkill.
    view full answer...
  • Selection of Timbren Rear Axle Suspension Kit for 2006 Ford F250 Crew Cab Short Bed 4WD
    The Timbren Rear Suspension Enhancement System # TFRTT350F is intended primarily for heavy-duty service vehicles but would work fine for your application. Both this kit and the lower-rated # TFR250SDF are confirmed fits for your 2006 Ford F-250 Crew Cab Short Bed 4WD. For your reference I have linked the instructions for both kits along with a video on the TFR250SDF. Please note that all suspension kits, including these Timbrens, are designed for use with vehicles whose suspension systems...
    view full answer...
  • Suspension Enhancement for a 2008 Ford F-250 with 5th Wheel Trailer Hitch Installed
    The Firestone suspension enhancement system, # F2071, is not designed for the 2008 Ford F-250 so the short answer is no. What I recommend , if your 5th wheel underbed brackets install on the outsides of the frame rails is # F2550. This kit has brackets that install on the bottom and insides of the frame rails. Another option, if the bottoms of the frame rails are free of obstructions, is a Timbren system like # TFR250SDF. These are not springs that inflate but they work in much the same...
    view full answer...
  • Compatibility of B&W Gooseneck Hitch and Timbren Springs for 2008 Ford F-250
    The correct rear axle Timbren Jounce Spring kit for your 2008 Ford F-250 4X4 is part # TFR250SDF. The kit # TFR350SDF you referenced fits the F-350. Any suspension kit can potentially have interference with either a 5th wheel or goose neck hitch if the two items require the same mounting points on the truck's frame. You can use the Timbren installation instructions I have linked to see where these jounce springs attach (in place of the factory bump stops) and compare that to your hitch...
    view full answer...
  • Does Spacer Need to Be Used When Installing Timbren Kit on 2010 Ford F-250 Super Duty
    With the Timbren Rear Suspension Enhancement System # TFR250SDF installed on your 2010 Ford F-250 Super Duty you're looking for a gap of 1/2" to 1-1/2" from the bottom of the Timbren spring to the contact point on your truck when the truck bed is empty. If the gap is less than 1/2" then you'll want to remove the spacers as they aren't required unless needed to get into that "sweet spot" I mentioned above.
    view full answer...
  • Troubleshooting Rear Sag With Equal-i-zer Weight Distribution System Connected on 2006 Ford F-250
    The Equal-i-zer Weight Distribution System w/ 4-Point Sway Control # EQ37140ET may or may not be set up correctly. You'd be surprised by how many systems are not installed correctly at dealers. I'd double check your setup first and then if needed address the truck sag. I've attached the installation instructions to assist. A weight distribution system should not only help your trailer to sit level but should also reduce the sag of your truck. If your truck sees very little difference...
    view full answer...
  • Timbren Suspension Enhancement Recommendation for a 2014 Ford F-250
    I spoke to my contact at Timbren, I explained your situation and they said that in your situation you could go ahead and use the Timbren System part # TFR250SDF. The mounting bracket is the same as the # TFR250SDG with the only difference being the 1 inch spacer included with the # TFR250SDF. Before you do this I would recommend you go out and double check the measurements you took on your truck. I attached an install video for you to check out also.
    view full answer...
  • Suspension Enhancement Recommendation for 2008 Ford F-250 Towing 2009 Keystone Toy Hauler
    The biggest advantage to using an air bag system with the internal Jounce Bumpers, like the Air Lift LoadLifter 5000 Ultimate, # AL88398, is that you get the best of both worlds. The air bags offer the variable load carrying capability and reduce the strain on the rear suspension of your F-250. The internal jounce springs help to improve ride comfort and also work as a fail-safe if the air springs lose pressure. An on-board compressor system, part # AL25592 is available that would allow...
    view full answer...
  • Recommended Jounce Springs for Tow a 5th Wheel with a 2005 Ford F-250
    If you really want to use the SumoSprings Solo Custom Helper Springs then I recommend part # SSR-114-54 which have a 2,800 lb capacity and will be the most they offer that will work with a 5th wheel hitch. However, I would strongly urge you to consider the Timbren Rear Suspension Enhancement System part # TFR250SDF which have a 6,000 lb weight capacity and will be much better suited for the pin weight of your 5th wheel trailer. They may provide a slightly less comfortable loaded ride when...
    view full answer...
  • Are SuperSprings Helper Springs Weight Rated Individually or In Pairs
    The capacity information listed for the SuperSprings SumoSprings is per axle, not per spring. For instance, the # SSR-114-47 lists a per pair capacity of 1500 lbs. Please be aware that using a suspension enhancement product like the # SSR-114-47 won't increase the weight bearing capabilities of your truck. This product is compatible with trucks equipped with a fifth wheel hitch. For a higher capacity at 5000 lbs, go with the SumoSprings Rebel, part # SSR-101-47-2. This particular product...
    view full answer...
  • Jounce Bumper Spring versus Air Springs on a lifted 2008 Ford F-250
    For your 2008 Ford F-250, I can help you with enhancing your factory suspension. You are correct in saying that the air bags have more flexibility, but do require more maintenance than the jounce spring systems which are maintenance free. Either option will work with your lifted truck, but if you are primarily concerned about suspension support when towing your 5th wheel, then the jounce replacement springs are an excellent low cost option. For your needs, I'd suggest the Timbren Rear...
    view full answer...
  • Recommended Suspension Enhancement For 2008 Ford F-250 Towing Fifth Wheel Trailer
    We have a couple of options for your 2008 F-250. For towing your fifth wheel trailer I recommend the Timbren System # TFR250SDF. This system replaces the bump stops on your truck and requires no drilling for installation. This is designed to work with a suspension system that is in good working order, and will not increase the load-carrying capacity of your truck. For a suspension system that uses air bags I recommend using Firestone Air helper Springs like part # F2550. These springs...
    view full answer...
  • Correct Timbren Rear Suspension Enhancement for a 2013 Ford F-250 4x4
    The Timbren Rear Suspension Enhancement System # TFR250SDF that you referenced is designed to fit 2005-2010 Ford F-250 pickups so for your 2013 F-250 you want the Timbren # TFR250SDG kit instead. This kit is essentially the same thing with the only difference being a higher weight capacity at 8,600 lbs as opposed to the 6,000 lb weight rating of the kit you referenced. Please note that suspension enhancement is designed to be a supplement to your OEM suspension and doesn't increase the...
    view full answer...
  • Should Timbren Rear Kit Be Contacting 2010 Ford F-250 Axle with 250 lb Load
    I suppose it's possible for the gap to be close between the Timbren Rear Suspension Enhancement System # TFR250SDF and your 2010 Ford F-250 truck bed with a smaller cargo load in your bed but I think there are some factors to consider as well like is the load evenly distributed or is it directly over where the Timbrens sit, what is the condition of your OEM suspension (a worn out suspension won't hold up as well), and do you have anything else in your bed (like a loaded toolbox) prior to...
    view full answer...
  • Are Air Springs or Rubber Springs Better For Sag When Towing a 5th Wheel With a 2008 Ford F-250
    The decision between an air ride system or helper springs should be made based on how you will be using your 2008 Ford F-250 Super Duty. Air bags are a good option if you tow your fifth wheel trailer occasionally and do a lot of hauling with varying load weights. I would recommend using the Firestone Ride-Rite Air Helper Springs, # F2550, as these air bags will work with a fifth hitch installed in your truck bed. Air springs should be manually adjusted for each load using an air compressor....
    view full answer...


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