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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
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2002 Nissan Frontier
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Timbren

Timbren Suspension Enhancement System - Rear Axle

Part Number: T25MR
In Stock
$269.36
Retail:$316.90
You Save: $47.54
Vehicle Suspension
Not Confirmed to Fit

2002 Nissan Frontier

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8,600-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. Becomes more rigid as more weight is added for great performance when you're hauling a heavy load. Great Prices for the best vehicle suspension from Timbren. Timbren Suspension Enhancement System - Rear Axle part number T25MR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension - T25MR

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • 1,000-lb Load Support: Keeps your truck level and stable when hauling heavy loads or towing.
  • Better Handling and Control: Reduces sag, sway, and body roll for safer cornering and braking.
  • Smoother Ride Over Bumps: Rubber springs absorb road shock to prevent bottoming out.
  • No-Maintenance Design: Progressive rubber springs stiffen automatically as weight increases.
  • Simple Bolt-On Install: Mounts to frame with custom brackets—no drilling or air lines needed.

Features to know about

Keep Your Truck Level Under Heavy Loads: 1,000-lb Load-Leveling Support

When the bed’s packed or the trailer’s hooked up, keeping your truck level matters for control and safety. This Timbren Suspension Enhancement System adds up to 1,000 lbs of load-leveling capacity to help eliminate rear-end sag and maintain a steady ride height. The hollow rubber springs sit above the rear axle and automatically stiffen as weight increases, working with your factory suspension to keep steering and braking predictable when hauling heavy loads.

Truck bed sagging under heavy load showing effect before using Timbren Suspension Enhancement System

Smooth Out Rough Roads: Rubber Springs That Absorb Shock

Bumpy roads and jobsite terrain can beat up your suspension and cargo. These Aeon hollow rubber springs act as secondary shock absorbers that take the brunt of bumps and rough roads. The rubber construction helps cushion impacts, keeping the ride more stable and reducing wear on your stock suspension so it lasts longer.

Empty pickup truck on rough road illustrating shock absorption benefits of Timbren suspension system

Stay Steady in Crosswinds and Turns: Independent Spring Action

When a curve pushes you off balance or a passing semi sends a gust your way, each spring works on its own to keep its side planted. This independent action reduces body roll, sway, and bounce so you stay in control through corners or uneven terrain. Even off-center loads stay balanced thanks to each spring responding only when needed.

Diagram showing Timbren suspension system reducing body roll, sway, and squat during turns or uneven loads

Illustration showing trailer sway reduction when using Timbren suspension system while towing

Install Once, Then Forget It: No Air Lines or Adjustments

Adding load support doesn’t have to mean constant maintenance. The Timbren system installs directly onto the frame above the rear axle using custom-fit brackets and hardware—no drilling required. Unlike air systems, there are no hoses, compressors, or gauges to deal with. Once installed, these springs automatically engage when you add weight, providing extra support with no manual adjustments needed.

Specs

Weight and Capacity

  • Bump-load capacity: 5,600 lbs
  • Overall capacity: 1,000 lbs

Diagram comparing loaded vs unloaded condition of Timbren suspension with one inch clearance over axle

Cross-section animation showing compressed Timbren rubber spring design increasing resistance under load

Warranty

  • Lifetime warranty
  • Satisfaction guarantee

Note

Timbren springs will not increase your vehicle's weight-carrying capacity. Do not exceed the manufacturer’s recommended weight limit.

FRBSMV Timbren SES with Aeon Hollow Rubber Springs - Rear Axle

Installation Details T25MR Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.7

7322 reviews
5 Stars
(5894)
4 Stars
(887)
3 Stars
(208)
2 Stars
(136)
1 Star
(197)
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by:
Simply and effectively manages the load when carrying our SCOUT Tuktut camper in the bed of our Maverick. Unloaded, they do cause s slightly harsher ride when hitting larger bumps, but nothing objectionable. Install was very easy, I did it in my driveway after backing the truck onto ramps to raise the rear. 30 minute job. I am docking a star because mine was missing nuts and I still haven’t received replacements from etrailer.
by:
Looks to be well made but missing hardware. I will update with the performance and longevity after I put some miles in it.
by:
Excellent item really helps out keeping the bed from bottoming out when you carry some extra weight. Super easy to install also
by:
2025 Ford Maverick
Easy installation.
by:
Easy to install... It could have been a little bigger.
by:
2022 Ford Maverick
Works like you said easy install
by:
2025 Ford Maverick
They fit great but I was worried when I got the box.The box was all torn up with tape all over it.
by:
Fits well and easy install
by:
I assume they help. I have no way of telling before and after
by:
Katrina B. profile picture
Etrailer Expert

Katrina B.

3/17/2023

Youre the first review! We want to hear more from you.

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2022 F250 Super Duty. Super easy to install. I have about 3/4" gap between the spring and the plate. Time will tell how they impact the ride quality and how much sag they mitigate with my 5th wheel hooked up.
Jay S. profile picture

Jay S.

8/14/2026

Now that its been a year Im very impressed with them. Theres no ride detriment without the 5th wheel attached and they do a great job of mitigating squat

by:
It has been almost a year since I installed Timbren Suspension Enhancement Systems (DVF350 and DVR350R) on the front and rear of my 2003 Dodge RAM Van 3500. These bumpers replaced the OEM bump stops that were on my van. I like the Timbren bumpers much better than the OEM bump stops because they provide a progressively cushioned response for suspension compression when traveling over significant humps like speed bumps in a parking lot, or curb ramps into driveways. I did not like the abrupt stop the OEM bump stops provided when traveling over the same objects. I installed the Timbren rear bumpers first, and after a few months of use, I decided to add them to the front. In both cases, the front and rear Timbren bumpers were easy to install once the OEM bump stops were removed. Installation required reuse of the factory hardware. On my van, the Timbren bumpers are not always engaged. Under normal load and travel conditions the bumpers are relaxed and about 1/2” away from the suspension landing points. However, their presence is much appreciated and very noticeable when the van is carrying heavy loads or handling significant humps.
Kate F. profile picture
Etrailer Expert

Kate F.

5/6/2026

Glad to hear the Timbren systems worked out so well for your RAM Van Mitchell! It’s great that you noticed the smoother, more progressive response compared to the factory bump stops, especially under load. Thanks for sharing your experience with both the front and rear installs, that’s really helpful for others considering the upgrade. What kind of loads are you usually hauling with your van?

by:
Absolutely Pleased with the TIMBRENS. They were easy to install, and took less than an hour to install both. I noticed a slight stiffness in the ride as the rear bounced over a bad roadway. Towing is great, with a nice level and smooth ride. I am glad that I did not order the heavier duty Timbrens, than what was recomended for my truck. I believe the ride would have been too stiff. If you look at the photos showing the timbrens, the truck is still lifted in the rear, so what you see is a big gap between the rubber, and the steal plate. When the truck is lowered, there's 1" of space as it should be. BTW, I have been purchasing from etrailer for years now, and I have to say that I have never had any issues with any orders. They are my go to folks for all of my vehicle suppension stuff and trailer stuff. You can't go wrong with buying from them.
Brooke M. profile picture
Etrailer Expert

Brooke M.

5/7/2025

Wow, thank you for sticking with us, Don! That is awesome. I think you made an excellent choice here. Timbrens are tough and the heavy duty are SUPER tough. Glad to hear these were a good fit. Love the photos! Is that your own property?

Don profile picture

Don

5/21/2026

The TIMBRENs work as stated during when I am pulling anything heavy. However, when the truck is not pulling anything, anyone riding in the rear seat gets a very hard jarring jolt when driving over any roadway repairs, bumps, expansion joints on bridges. I wished that I would have went with the Super Springs, or the Road Active Suspension. I may replace the TIMBRENS later.

Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

5/21/2026

@Don I'm sorry to hear that the Timbrens didn’t pan out to be as great as you originally hoped. Swapping over to the SuperSprings or the RoadActive Suspension will definitely have less of an impact on your day-to-day driving. Out of the two, the RoadActive Suspension would have the least effect. If you ever have questions about the RoadActive Suspension or the SuperSprings, let me know and I’d be happy to help out.
by:
The timbres bump stop is exactly the right height to meet the axel when the trailer is connected with all its weight onto the hitch. I have an Andersen weight distribution hitch and it levels out perfectly. The day picture is with the coach (Winn 2100bh) with factory equipment. The night picture is after the timbres are in place. Looks good.
Lazer S. profile picture
Etrailer Expert

Lazer S.

6/16/2026

They definitely look like they are helping, Orlando! How are they when you aren't towing? We hear a lot of people say they can be pretty harsh when unloaded.

by:
Stiffens and corrects kneel in rear end of 2023 Chevy Silverado 1500. You will notice a stiffening of the rear end suspension while unloaded, but it’s a fair trade off to prevent sagging and porpoising while towing. I found it easier to pull the rear wheels and work from the side than underneath the vehicle while installing.
Kate F. profile picture
Etrailer Expert

Kate F.

7/13/2026

Bud, thank you so much for taking the time to leave a review! I'm glad to hear the suspension upgrade helped reduce the sagging and porpoising while towing. I also really appreciate you including the installation pictures and sharing your tip about removing the rear wheels. I'm sure that will help the next person tackling the install. Thanks again for choosing etrailer!

by:
Installed the Timbren TFR250SDJ on my 2025 F-250 Platinum Plus 4WD Short Bed with 6.7 HO Powerstroke. Fit perfectly. It takes a few minutes to get the bags attached to the base. It seems like the bolt is too long but I used a vise to hold the unit while I tightened it down more and cinched the bag to the base. So if it seems it wont get tight enough and is still loose, find a way to secure the base... there's still a few more turns.

Attaching to the truck takes a few minutes to remove the OEM (2 nuts) and a few minutes to install the Timbren SES. I added about 45 minutes by dropping one of the nuts, which I finally found inside the shock absorber bracket!!

I used a hand socket but would recommend air or power tools, if you can get to the nuts, but it can be done manually. Probably took me a few extra minutes with a socket wrench because of limited space, and I'm old!

I have not tested the SES under load yet, but I was really more concerned with the ride unloaded.I ended up with a gap right at 1" between the peg and bottom of the SES. Some reviews said the unloaded ride worsened. So I drove to the nearest small town with horrible streets, bumps, holes, broken concrete, sewer covers 3" below the asphalt, etc. On the highway, the ride was perfect, completely unaffected. On my bad road obstacle course, I thought the ride improved significantly. So I think the system will give a better ride unloaded. It was a little stiffer, less roll, and smoother. It was not "bouncy" or jarring, like some reviews mention. Very smooth and felt beefier on bad roads.

I'll update after I've driven loaded. I tow a 12,000# 2025 Rockwood TT 36' with a ProPride 3P hitch. We put 7,000 miles on it across 15 states this past year, so I've definitely got a "before" baseline using the OEM bumpers.

The ordering process was great. Naomi D had great product knowledge. At first I thought I was talking to my granddaughter, but after putting her through the paces, It felt like I was getting sage advice from my Grandfather. e-Trailer seems to really invest in their customer service reps knowledge base. Also completely satisfied with the order process and delivery. They were able to mail to our PO Box, which seems to be a problem for most (our physical address is a gate on the side of a highway, with cows on the other side).

100% satisfied so far and would recommend both e-trailer and Timbren to a friend. Will update once I've done some towing, but can say the unloaded ride is unaffected or improved for my application. So far, very happy.
Robin H. profile picture
Etrailer Expert

Robin H.

9/22/2026

Thanks for taking the time to share such a detailed review and all of the pictures! The unloaded ride is a concern we hear fairly often with SES upgrades, so your experience with the 1" gap and rough-road testing will be really helpful to others considering these for their F-250. We appreciate the kind words about Naomi and our team as well. Looking forward to your update once you get some miles on them with the Rockwood!

by:
A very simple and straightforward installation once you get the oem bumper stops off (had a shop do that)
Timbren worked with me as I had a non OEM frame height (vehicle was lower than stock) to recommend the proper kit. Highly recommend contacting timbren if you are unsure of the proper kit to use. Ride is more stable. It does feel stiffer and less bouncy but am looking forward to seeing how it performs with my truck camper. Truck is a 1998 dodge ram 2500. Brake line over left side of axle needed to be secured to prevent damage.
Heather A. profile picture
Etrailer Expert

Heather A.

4/24/2026

Hi there, thanks for reaching out, that’s actually a common issue with this type of trim. The one you tried is a standard flat insert, but some RVs (like your NOBO) use a slightly domed trim to help it sit over the screw heads in the track. If the screws stick up even a little, a flat trim won’t fully snap in place, which sounds like what you’re running into. The best way to find the right replacement is to remove a small piece of your original trim, lay it flat, and measure the full width from edge to edge. Most are either 3/4" or 1", but the shape matters too, not just the width. If yours has that domed profile, you’ll want something similar or a softer vinyl that can flex over the screws. If you’re able to send a quick photo of your track or old trim, I’d be happy to help you find a better match.

by:
2001 toyota Tacoma
Well they are exactly what I thought it would be. Hard for me to say it's what I needed yet.
I installed them on a homemade trailer from a salvaged 2001 base model tacoma. Once I get finished building it out and have some weight in it I'll have a better idea. But from what I've seen so far on a couple test drives they should come into effect when needed.
For reference I building an Tacoma based trailer with an ARE Contractor topper with a Naturnest roof top tent on the very top. So to counter and sway these should be very helpful. At least I hope so. I'm not an engineer but I did stay at an Holliday Inn once.
Mike L. profile picture
Etrailer Expert

Mike L.

4/23/2026

Niiiice, I see what you did there!! That looks like a sweet setup!

Mike L. profile picture
Etrailer Expert

Mike L.

4/23/2026

@Bill That's outstanding, good job!!
by:
2025 Chevrolet Silverado 2500
The Timbren SES is a simple solution for rear squat when towing. When hitched to my 30' Airstream Globetrotter (8800 GVWR) with a tongue weight around 1200 lbs, my Silverado 2500HD had a bit more squat than is ideal. I shopped airbags but didn't want to spend ~$2K for the set up and didn't want the hassle of installation and forever chasing air leaks. The Timbren SES literally installs on the Silverado in about 15 minutes. So simple. No bags, no compressor, no wiring, no air lines, no leaks. And WAY less expensive to boot. Just returned form a 600+ mile trip and it towed flawlessly.
Mike L. profile picture
Etrailer Expert

Mike L.

4/2/2026

Glad to hear they worked well for you Jerrod. Hope you had a good trip!

by:
2,000 miles in on a trip from the east coast to the Canadian Rockies these work great while loaded and towing. Close to zero bounce while towing, I love them. Unloaded, however, the ride in my 2026 Tundra has gone south. There is a noticeable, abrupt stop of the units hitting the axle when going over any kind of bump. When I get home and back to regular driving, I may just take them off, its that bad.
Lazer S. profile picture
Etrailer Expert

Lazer S.

7/20/2026

Glad they are working well for you, Kevin! Well, while you are towing, that is. We have heard that these can be pretty rough when unloaded, but work great when you are loaded. A quick release function on these would make taking them off when not towing a lot easier. I may pitch that to Timbren to see if they can work something out. I will tell them to call it something like the Kevin Device if they agree! ^___^ Sounds like quite the trip! What has been your favorite stop so far?

by:
I've had these on our tow rig for a year now and I added buy them again today if I needed them.these have worked much better than airbags for our coil spring rear suspension to handle the tongue weight of our trailer. The SUV sits level when the trailer is on and it handles bumps and sway better than the airbags did providing much more comfort to us in the vehicle. Unloaded, we don't really notice they are there, unless, we have all the kids and some friends loaded up and you will fell them work when going over bumps.i do all my maintenance on the vehicle's and inspect these regularly and I cant see any wear so far even though we've gone on 6 trips with our trailer with about 5000 miles doing so.
I cant say these are the best for every truck or SUV, but for ours it is the best and I definitely would recommend to others.
Mike L. profile picture
Etrailer Expert

Mike L.

2/26/2026

Thank you Darrell, we're glad to hear your Timbrens are still on the job!

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See what our Experts say about this Timbren Vehicle Suspension

  • Availability of Air Lift Air Helper Springs for 2024 Ford Maverick Tremor
    Hi Brian; although there are Air Lift 1000 Air Helper Springs # AL42WQ for the 2024 Ford Maverick they are not a fit for the Tremor models. The only option for suspension enhancement on your Tremor is the Timbren SES # T25MR. These will give you the extra support you're looking for when hauling. They have a load-leveling capacity of 8,600 lbs, satisfaction guarantee, and come with a lifetime warranty.
    view full answer...
  • Timbren Bump Stops For A 2025 Ford Maverick LARIAT Hybrid AWD
    Hi Andy! The Timbren bump stops # T85MR and # T25MR will indeed fit your 2025 Ford Maverick LARIAT Hybrid AWD. However, The # T25MR is rated up to 8,600 pounds, so it will likely be way to stiff and be very jarring when you hit them. The 4,800 pound # T85MR would be the better choice out of the two. With that being said, I think the best choice for your vehicle is the Air Lift 1000 Air Helper Springs for Coil Springs - Rear # AL42WQ. They are adjustable to match the load you are carrying...
    view full answer...
  • 2022 Ford Maverick Timbren Fitment and Suspension Enhancement Alternative
    To install Timbrens on your FWD 2022 Ford Maverick you'll have to go with the Timbren Active Off-Road Bumpstops # T85MR as the Kit # T25MR you're looking at isn't designed to fit your truck. Timbren markets the Off-Road bumpstops as being more forgiving which isn't a bad thing considering Timbren kits tend to be a bit more harsh when it comes to unloaded performance. For something that gives you a bit more flexibility in performance I recommend using the Air Lift 1000 Air Helper Springs...
    view full answer...
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  • Selecting The Correct Timbren Jounce Springs For a 2022 Ford Maverick
    We have 2 sets of Timbren Jounce springs for your 2022 Ford Maverick. The 8,600LB Springs # T25MR and the 4,800LB Springs # T85MR. The 4,800lb springs are their off-road bump stops and will provide you more suspension travel than the standard 8,600lb springs. If you want to have the additional suspension travel or plan to off-road with your Maverick you will want the 4,800lb kit. If you only intend to use your Maverick on road and will haul heavy loads the 8,600lb kit will reduce sag better...
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  • Will The Timbren Suspension Fit a 2023 Ford Maverick With 2" Suspension Drop Installed?
    The Timbren Suspension Enhancement System # T25MR like other systems we carry for your 2023 Ford Maverick are only designed to work with a factory height suspension. You may be able to use some Air Lift 1000 Air Helper Springs # AL42WQ but I will need to know the height of your new rear springs along with the inside coil diameter and distance between the coils to verify the correct kit.
    view full answer...
  • Spacers for Timbren SES for 2026 Ford Maverick
    Hey Ben! Yes, we do have spacers that will work with the Timbren # T25MR. There isn't a specific kit so you can just pick the individual spacers you need for your application. We have the 1/2" Spacer # TA25722-90P00 and the 1" Spacer # A25723-90AH00. You can use any combination of these to get them to the right height, and both have the 3/8" bushing needed to match the hardware used with this SES kit. What will you be towing or hauling with your Ford Maverick?
    view full answer...
  • Suspension Enhancement Kit that Fits 2023 Ford Maverick FWD
    At this time it is only listed as a fit for the AWD models. The Air Lift air bag kit part # AL57JQ is a fit for the FWD models though and would work great.
    view full answer...

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Info for this part was:

Employee Jameson C
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Employee Wilson B
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