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  1. Vehicle Suspension
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  3. Monarch Motorhome
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FITS 2008 Monaco Monarch Motorhome
Timbren Rear Suspension Enhancement System

Timbren Rear Suspension Enhancement System

Item # TWRW22
Retail:$584.30
Our Price: $496.65
You Save: $87.65
Vehicle Suspension
Confirmed to Fit
2008 Monaco Monarch Motorhome

33SFS

34SBD - Workhorse

35SFD - Workhorse

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The best technical support and full vehicle suspension installation instructions. Great price Monarch Motorhome vehicle suspension and expert service. Monaco Monarch Motorhome, 2008 vehicle suspension by Timbren are available from etrailer.com. For expert service call 1-800-940-8924 to order your Timbren Rear Suspension Enhancement System part number TWRW22, or order online at etrailer.com.
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2008 Monaco Monarch Motorhome - Timbren Rear Suspension Enhancement System

  • Rear Axle Suspension Enhancement
  • Jounce-Style Springs
  • Timbren
  • Extra Heavy Duty

8,600-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your Monaco Monarch Motorhome. 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: 8,600 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. 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 because the rubber has more travel.



WRW22 - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TWRW22 Installation instructions

Customer Satisfaction Score:


Customer Reviews

Timbren Rear Suspension Enhancement System - TWRW22

Average Customer Rating:  4.7 out of 5 stars   (6106 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.

by:

These “overloads” are such a great answer to suspension needs! They are made with high grade materials and the installation was a snap! I would buy them again many times over! Don’t mess with air bags, compressors, air lines and all that “stuff.” These are the deal!! Pictures of before and after. Simple way to add significant suspension payload quickly with little fuss.



by:

I've had them installed for a year, still working great! Easy installation with no drilling needed. Simply bolt right in. Great product.

Richard

6/3/2023

Great!



by:

Timbren is a nice product but overpriced for what you get. They did give my motorhome a bit more sway support but made the ride more sharp, even on small cracks/bumps in the road. A sway bar would have been a much better way to go.



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Workhorse

Greatly helped the roll of the workhorse frame



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Its ok but not that differences, highly recommended for air bags instead these



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I know it will be lovely when loaded or the trailer on. However,it rides like a wagon empty with brand new premium shocks and struts empty. Thud thud thud. You really cannot feel the shocks or suspension. Found exact same item plentiful for 60 bucks on eBay after I bought these for 250. I may cut these in half or put air bag on. I do not like the ride empty. No hard feelings. It is a good product maybe just not for me.



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Took about 45 minutes to install. But that was 2 trips into the house cause my deep drive sockets were buried. F-350 gasser with 8’ box, Fiberglas cap, 200lb wooden storage drawers and estimated 400lbs in tools. I tow a 14k bumper pull dump that squats the truck. I installed the spacer with the timbrens and it sits on the original axle stop. Ride quality is unknown as I haven’t driven it yet.



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Installation was a breeze, removed old bump stops installed Timbrens in about 30 minutes. Haven’t put a load on them yet so I’ll update later. Installed on a 2008 Silverado 2500HD..



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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.



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Was able to install these with a 15mm flex head ratchet wrench and lifted the rear of the truck to make it easier. 30 minutes to take off 4 nuts and put em back on. 2 minutes assembling the timbrens with the added spacer. I have a f350 with a salter and plow. Loaded with salt the lights shoot up and in the snow ?? it’s like hitting hyper drive and you’re blinded. These helped big time. Very happy so far.



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The pro: The longer, heavier bump stops worked great when hauling my mustang home from Chicago. The truck stayed level and handled great.
The con: I had to remove the bump stops for everyday use. They limited my suspension travel causing a stiffer ride.



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I am so glad I bought these for my truck. I was able to install them myself using a jack and jackstands. The ride is bit rougher now; but the suspension is totally awesome compared to before. I am able to haul a bit more weight when needed.



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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.



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very good product ,received just in time and fit perfectly on my GMC savana 2000 .Be sure to clean the two receptacle thats help.
très bon produit , reçu dans les délais et s'ajuste parfaitement . Assurez-vous de nettoyer le receptacle cela facilite l'installation.



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The Timbren SES (Bump Stop) replacement for the 3rd Gen Sequoia is a simple and effetive solution to reduce vehicle sag when trailering heavy loads. You definately want to use the included spacer as the pics will show I still had 2 finger clearance above the axle to allow for OEM suspension travel. I pulled my 29ft boat back to back with / without the Timbren bump stops for a ride quality test. Without the bump stops, my 2024 Sequoia rear end was crushed, resulting in a rough ride and poor handling characteristics. With the Timbern bump stops, the rear sag was reduced signifincantly, and the vehicle drove much better. YES, you will feel and occasional bottom out feeling on abrupt G-out dips... But it is no worse than without the Timberns as the stock springs were crushed. My daily drive feels exactly the same as I have the perfect gap between the Timbren bump stop and the axle allowing the OEM suspension to float over road surface without engaging the bump stops. VERDICT: Time will tell with varied passenger loads, speeds, road surface bumps etc., but my initial impression is 7 out of 10. Ultimately, I would prefer air bags, and may install them along with the Timbrens whih I can swap back to the oem bump stop in less than 15 minutes. NOTE: I was able to install the Timbren bump stops without going under the Sequoia. I simply raised the vehicle frame aprox. 4" withoug picking up the rear tire. This gave me adequate room to reach in over the tire and remove the 3 12MM bolts holding the OEM bump stop in place with a 3/8" ratchet and a 4" extension. Then, I put the Timbren bump stop in place and lightly threaded the upper bolt to hold in place. After installing the two lower bolts and smart torquing, then you tighten the top bolt. This allows the bracket to seat against the frame fully as the top bolt hole is slotted to allow movement druing install. Pics will show spacers installed above the bump stops, Installed bump stops unloaded with 2 finger gap, spacers loaded with 750 lbs of tongue weight, and lastly, will show Sequoia stance while loaded. NOTE: The last picture will show my Sequoia loaded WITHOUT the Timbren SES (Bump Stops) and the vehicle is sagging heavily.



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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



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Installation was easy and straightforward. Haven’t towed with them yet, but the unloaded ride has not at all been negatively affected. In fact unless you hit a big bump you shouldn’t know they are there but they seem to improve handling around turns when there is a shift to either side in the back. It a HD truck so there is some expectation it’s gonna ride like a covered wagon at times. I added these in conjunction with new Billstein shocks and I’m hopeful all that aggravating bouncing or porpoising my fifth wheel does on bad roads and bridge transitions will significantly improve. etrailer was fast with shipping and follow up. I’ll update after towing.



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Definitely a must have when towing..stiff without a load but night and day difference while towing my travel trailer, better traction, steering and braking. Easy quick install..only issue I had was with the long bolts they sent with the spacer kit (optional for lift) the bolt diameter was too wide to fit through the holes on the bracket..but a trip to the local hardware store took care of that.



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Pros: Cheaper and easier to install than airbags, do the job when load is enough to compress the shock, with added weight or towing, then it stiffens the rear very nicely.
Cons: Doesn't do anything until there is 2-3cm of compressed shock. It sits above the contact point, doesn't touch. Under normal driving, there is no benefit/improved stiffness/anti sway in rear or a leveling of the factory rear sag in a 2022 or newer Toyota Tundra.
If had it to do over, would have put some kind of spacer in between product and upper included bracket, the supplied bolt is long enough to accommodate, to eliminate the gap, and lift the rear 1-2 cm. Should do it anyway, maybe when swapping to summer wheels next month.



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I installed over the weekend and have a maiden journey with the Travel Trailer coming up next week. Installation on my 2017 Toyota Sequoia was straight forward. I was going to say easy, but I am not as young as before and my wheel / tire combo is damn heavy for an older guy. But that's another story. Anyway, just remember folks, this does not increase the payload of your vehicle. You must still use WDH and sway control for longer/heavier trailers.



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Haven’t hauled my 5th wheel yet so will have to update once i have.
Package arrived promptly, installed in my garage in about 40 minutes with absolute minimal swearing. Installation would have been quicker if I hadn’t wasted time figuring out that my brand new Ford F250 has metric nuts. Great fit, great follow up from the company. I’ll be doing more business with them.


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See what our Experts say about this Timbren Vehicle Suspension

  • Size of Bolt that Comes with Timbren Kit part # TWRW22
    The bolt size that comes with the Timbren kit part # TWRW22 is M10x60mm x 1.5. Basically just enough of the bolt comes through the assembly and frame to secure it with the nut on the truck frame.
    view full answer...
  • Recommended Suspension Enhancement for 2007 Winnebago on Workhorse Chassis
    Based on my research, it looks like your 2007 Winnebago Voyage 33V was built on the Workhorse W20 chassis with 4-wheel drive. I do recommend verifying this information with your paperwork for the RV, as it looks like there were a few different models of that Winnebago. For suspension enhancement, I recommend the Timbren Front Suspension Enhancement System # TWFRW22 and Rear Suspension Enhancement System # TWRW22. These are jounce-style springs like the ones you were looking at that will...
    view full answer...
  • Is Weight Capacity for Timbren Suspension Kit # TWRW22 for Both Springs or Per Spring
    The capacity of the Timbren Rear Suspension Enhancement System # TWRW22 that you referenced is 8,600 lbs for both sides together. You should note that these kits give you additional suspension support but they do not add to the capacity of the vehicle. They only allow you to carry your current capacity in a safer way.
    view full answer...
  • Timbren Rear Suspension Enhancement System for a Food Truck on a 2005 Workhorse P42 chassis
    I have a great solution for you that will not require you to lift your food truck. I recommend the Timbren Rear Suspension Enhancement System item # TWRW22.These hollow rubber springs have an 8,600 lbs capacity and sit above the rear axle to help stabilize and level your food truck. They work independently from side-to-side to minimize sway and help compensate for off-center loads. We have had other customers, with food trucks, use these successful and write us back. We also have a set...
    view full answer...
  • Timbren Suspension Enhancement For 2003 Winnebago Adventurer 38G
    The Timbren Front axle Suspension Enhancement System part # TWFRW22 is a fit for the 2003 Winnebago Adventurer 38G on the GM Workhorse chassis. I recommend to also add the rear suspension part # TWRW22. The Timbren springs are a great option to level out the motor home and help with body roll when turning corners. If your Winnebago is on a Ford chassis, you need part # TFFF53B for the front and part # TFRF53A for the rear. You may also consider adding a steering stabilizer part # RM-RBK22-RSSA...
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  • SumoSprings For a 2005 Winnebago Voyage 35A on Workhorse W22 or W24 Chassis
    It appears your 2005 Winnebago Voyage 35A sits on Workhorse W22 or W24 chassis. These chassis will use the Front # SSF-280-47 and Rear # SSR-280-54-1 SumoSprings. I really do not like Timbren # TWRW22 being used as these springs are very stiff compared to the SumoSprings. This causes more shock to transfer through the suspension rather than being absorbed by it.
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