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Dexter Trailer Springs Over-Under Conversion Kit

Dexter Trailer Springs Over-Under Conversion Kit

Item # K71-385-00
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Dexter Axle Alignment and Lift Kits Accessories and Parts - K71-385-00
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Call 800-298-8924 to order Dexter Axle accessories and parts part number K71-385-00 or order online at etrailer.com. Free expert support on all Dexter Axle products. Guaranteed Lowest Price and Fastest Shipping for Dexter Trailer Springs Over-Under Conversion Kit. Accessories and Parts reviews from real customers.
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Dexter Axle Accessories and Parts - K71-385-00

  • Trailer Leaf Spring Suspension
  • Alignment and Lift Kits
  • Dexter Axle


Features:

  • Allows moving leaf trailer springs to top of axle
    • For use with double-eye springs only
  • Fits 3" axle
  • Sleeve bolts allow the setup to install level
  • Includes:
    • (2) Spring Seats
    • (8) 1/2" Nuts
    • (4) Steel spacer nuts
    • (4) 7" Long x 4-1/16" wide x 1/2" diameter U-Bolts
    • (2) Tie Plates


K71-385-00 Trailer Springs Over-Under Conversion Diagram


K71-385-00 Dexter Axle Over/Under Conversion Kit

Installation Details K71-385-00 Installation instructions



Video of Dexter Trailer Springs Over-Under Conversion Kit

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Dexter Axle Trailer Suspension - Leaf Spring Suspension - K71-385-00 Review

Today we're going to be taking a look at the Dexter trailer springs over-under conversion kit. This conversion kit is designed to fit 3 inch diameter axles. It's going to allow you to move the the trailer loose springs to the top of the axle without having to change the correct orientation of the axle. This is going to help with leveling your trailer. It's going to help with wheel well clearance. It also adds some height to prevent dragging, dipping, and bottoming out.

One kit is going to come with enough components for one axle, so one kit per axle. This is designed for use with double eye springs only. The unit is going to include 2 spring seats. These are going to sit on top of your axle. It's going to come with 8 nuts. You're going to get 4 U bolts, 2 tie down plates.

The tie down plates are going to sit on top of your loose springs once you have them moved to the top of the axle. It does have all the holes in it, that way the U bolts can wrap around the axle and come up through the plate. Then, you would secure it by installing the included nuts. It's going to come with the spacer nuts. These are going to allow the set up to install level.

Basically, you would have 1 spring seat on top of the axle, then your old spring seat would still be under the axle. The spacer nut is going to fill the gap between the 2 spring seats, so they thread on to the bolts that are welded on to your new seats right here. Again, it's going to fill the gap between the 2 spring seats. You would place this on until it makes contact with the bottom spring seat. Then, what you would need to do, which is highly recommended from the manufacturer is you would tack weld this to the axle to prevent the axle from slipping.

Then, you can finish the tightening process or make any minimal adjustments simply by using a wrench. Everything that you see here on the table is included. It's going to come with detailed installation instructions as well to help walk you through the installation process step by step. It is a bot on installation with some recommended tack welding. Overall, it's a nice unit. We're looking at all steel components, so nice, strong, durable design. Again, this kit is designed to allow you to move the trailer loose springs to the top of the axle without having to change the correct orientation of the axle. Again, it's going to help level the trailer. It's going to help gain some extra wheel well clearance, and it's going to help add some clearance to prevent those situations where you may be dragging, dipping, or bottoming out. That's going to do it for today's look at the Dexter trailer springs over-under conversion kit.


Customer Reviews

Dexter Trailer Springs Over-Under Conversion Kit - K71-385-00

Average Customer Rating:  4.7 out of 5 stars   (75 Customer Reviews)


- K71-385-00
by:

arrived in 4 days installing this weeke nd 207257



- K71-385-00
by:

Part was good, however I sold trailer before I installed the parts. Would shop again. 404682



- K71-385-00
by:

Contacted Jennifer at 4 PM on a Wednesday informing her that I ordered the wrong size axle spring conversion kit. I asked if she could do her best to get it to me as soon as possible. Whatever she did, it was on my porch by 8 AM the next morning. Job Well Done. Will use again 458459



- K71-385-00
by:

I have a 99 cummins with 35s and a 5 inch lift. My 5th wheel now sits level and I even raised the king pin up another hole. I'd definitely buy this again 252516



- K71-385-00
by:

Haven't installed yet but looks good in the box and I know anything from dexter is good stuff so I'm not sweating it.... 116030


Comments
Very happy with the product. Trailer toes so much better not that its level with my truck. The extra clearance helps a lot to when towing off-road to the remoter camp spots we like .
Dan a - 02/07/2015

9350

- K71-385-00
by:

This over-under kit made it extremely easy to move the axles on my Camper. The spring seats with the adjusting nuts made it easy to keep them aligned for welding. I reused my old tie plates because of my shocks I uses a price of 3x3x1/4 angle to bolt the shock to the tie plate. I had read that some people had problems if the had shocks. This gave my camper the extra ground clearance I needed. 677444



- K71-385-00
by:

Works as advertised After all is said and done it is still recommended To tack weld the spring pad in place. This defeats 90% of the do-it-your self. Easier to remove axle and fit/weld new spring pads for perfect alignment. 306760



- K71-385-00
by:

Received the package on Friday afternoon. Reviewed the instructions and postings @ E-Trailer. Pulled the trailer up in front of the house at 0930 Saturday morning and drove it away about 4pm. The biggest time killeer was as others have mentioned getting the 11,000 pound trailer up high enough and safe enough to do the job. Thanks for checking up on me. 135664



- K71-385-00
by:

Used two kits on a 10k equipment trailer, with 2, 6k lbs axles. The trailer is an Appalachian 16ft with drop down axles and scrapes coming in and out of my driveway badly. It’s used from equipment hauling to mulch and stone. I had to reuse the old plates. The ones provided were’nt wide enough to accommodate the springs by about 1/4- 1/2inch, although they seemed slightly more robust. I also added washers to the u-bolt nuts. Otherwise I would’ve rated it a 5. I followed the instructions and tack welded the new spring seats in place. Each trailer is different, so as a general kit, this worked very well and I would recommend it. This one actually gave me more clearance than I wanted. I didn’t actually measure spring seat to spring, but I estimate on a 3 inch axle it gave me 5-6 inches of lift. All said and done I feel comfortable that it will safely handle a 10k lbs load. 540073



- K71-385-00
by:

It went together fine, lifted the trailer bed a good 5-6 inches off the tires and looks strong; time will tell. First picture is BEFORE, 2nd pic is AFTER 414071



- K71-385-00
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Easy to install 865582



- K71-385-00
by:

All parts fit with just minor grinding. Which was to be expected. But the part that I liked the most was the costumer service. I can’t remember the girls name. But it was the kit that I wanted and needed. But everything on the specs wasn’t exactly what I needed according to your website. And dexsters website directly. According to the website the u bolts were going to be to small for what I needed. Nothing was adding up. It was bothering the girl that was helping me on the phone that it wasn’t making sense. So she had a tech go into the warehouse and cut a box open to verify if the manufacturer was correct or not. Which it turns out that the manufacturer was wrong on the u bolts. They were the bigger ones that I needed. Once again I can’t remember her name. But thank u again for going out of your way to help me out. Great customer service. 786206



- K71-385-00
by:

Recieved fast looks like quality product cant wait to get it on. 767502



- K71-385-00
by:

Kit was packaged excellent. It lifted my trailer enough to help my clearance issue. The directions are good and products are well made. Easy to install with the right tools. Very happy! 736109



- K71-385-00
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Nice kit, came with written instruction s. 730589



- K71-385-00
by:

These we easy to install and gave my trailer the lift needed so I can now back the trailer up without scraping or bottoming out. 719879


Comments
The lift kit works great! No more bottoming out when I pull the trailer into the driveway ??
John H - 10/24/2020

102541

- K71-385-00
by:

Product works perfectly and exactly as advertised. The only reason I didn’t give five stars is because the u-bolts aren’t very stout. In fact my factory ones were quite a bit larger. 696696



- K71-385-00
by:

etrailer has always done well by me. I used the kit to flip my axles. So 2 kits. Worked well but I did tack weld them like the kit recommended. Raised the trailer 5 or 6 inches so it doesn’t scrape the driveway up any more. No difference in handling when I am towing. I did have to re set up my hitch on the truck. Hardest part was jacking up the camper and dragging the axles out in the yard. 675119


Comments
After a year I am still very happy with flipping the axles on my 2005 Jayco. The hitch and rear bumper have not scraped on the ground all year. Well worth the time and money.
Todd - 07/25/2020

95184

- K71-385-00
by:

I used two sets of these on a tandem axle utility trailer that I'm rebuilding. The previous owner had flipped the axles using the original spring seats which made the axle and brakes upside down. These worked well for reinstalling the axles correctly. The only problem that I had with these is one stud welded to each spring seat appeared to be closer to the axle then the other. The axle would contact the long nut on that side and prevent it from turning unless you installed the spring seat with the nut fairly close to its final position. I had wanted to install a jam nut behind the long nut to prevent it from backing off but the axle interference issue prevented that. I'll find another way to lock the long nuts from backing off. The set does have good quality components and makes it easy to get your axle position correct. I followed the recommendation in the instructions and tack welded the the spring seats to the axle. 673813


Comments
I have had this kit on my trailer for about a year now and have had zero issues with the kits. For anyone looking to raise or lower a trailer this kit is an easy way to ensure that you get your spring seats lined up correctly.
Eric J - 07/23/2020

95022

- K71-385-00
by:

This conversion worked out great lifted the trailer perfect 670109



- K71-385-00
by:

Easy enough...worked. Could have washers for U bolts but other than that it’s rather straight forward. 665166



- K71-385-00
by:

This kit made the flip easier than new axles and I really think it’s probably stronger. Well worth the money and time to do it this way. 661804


Comments
Awesome !!!! Haven’t had the first issue with conversion. It has worked flawlessly and I highly recommend 100 SATISFIED !!!
Waylon D - 06/26/2020

82162

- K71-385-00
by:

Received the product on the day specified at 4 p.m. installed in less than 2 hours ....great product 633582



- K71-385-00
by:

Excellent service received just what I ordered in a timely manner 595597



- K71-385-00
by:

I have ordered from etrailer in the past and have always been pleased. I ordered the items the evening of 25 Oct 2018 and received them 27 Oct 2018 and my order was with free shipping. Normally company's that offer free shipping tend to set these orders on the back burner to ship out products where customers pay for the shipping. This wasn't the case with etrailer and I will continue to do business with them. 578232


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Ask the Experts about this Dexter Axle Accessories and Parts

  • Lift Kit Recommendation for 2018 Forest River Wildcat 30GT to Add 2 inches of Height
    We have a 2 inch lift kit you can install on your 2018 Forest River Wildcat 30gt which will help greatly with the nose high situation you have now. For that you'd want the # LC407131. This basically attaches to the hangers of the suspension and spaces out the connection between them and the suspension by an additional 2 inches.
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  • Best Way To Lift Jayco Fifth Wheel Trailer
    There is a way for you to lift your 1999 Jayco fifth wheel trailer, though not a lift kit that will give you a full six inches. The best option is called an over/under conversion kit, which moves your trailer's leaf springs to the top of your axle and lifts your trailer approximately the same amount as your axle's diameter plus the height of the leaf spring pack (please keep in mind this conversion kit is for use with double-eye springs only). I have added a photo a customer sent in...
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  • Best Way to Lift Jayco Eagle
    The best way to lift your Jayco Eagle is called an over/under conversion kit, which moves your trailer's leaf springs to the top of your axle and lifts your trailer approximately the same amount as your axle's diameter plus the height of the leaf spring pack (please keep in mind this conversion kit is for use with double-eye springs only). I have added a photo which displays how the kit will look after being installed. If you have a 2-3/8" round axle you would need Dexter Trailer Springs...
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  • Will Over-Under Kit Raise Height of 5th Wheel Trailer with Leaf Springs Above the Axles
    If your leaf springs are already located above your trailer axle then the Dexter Trailer Springs Over-Under Conversion Kit # K71-385-00 won't change anything as its designed to relocate axles from above the leaf springs to below the leaf springs. There are a few other ways that you can still add some height to your trailer though. We have the Lippert Tandem Axle Lift Kit # LC407131 which will raise your trailer up to 2", you can change out your hangers (see linked list of products),...
    view full answer...
  • Does Flipping a Single Axle Cause a Drastic Change in Tongue Height
    The tongue height of your trailer is going to increase in relation to the amount of lift gained from the Dexter Trailer Springs Over-Under Conversion Kit part # K71-385-00 for 3" axles or part # K71-384-00 for 2-3/8" axles. The amount of height you gain will be equal to the diameter of the axle plus the height of the leaf spring seat and stack. Basically, the over under kit raises the trailer's frame and since the coupler is attached to the frame, it is going to raise that as well. In...
    view full answer...
  • Best way to lift Haulmark Cargo Trailer
    You said your axle is 2.5", however that is not a typical size. I suggest that you remeasure the axle, and verify that it is 2.5" and not 2 3/8". Measuring a round tube can be difficult to get a accurate measurement, you could use 4" Carbon Fiber Digital Caliper # PTW80157 to verify, or measure the circumference and divide by pi (3.14159). An easy way to measure is to take a string and wrap it around the axle, then measure the length. It only being off 1/8" leads me to believe that it's...
    view full answer...
  • Availability of Bump Stops When Installing the Over-Under Conversion Kit # K71-385-00
    The instructions for the Dexter Trailer Springs Over-Under Conversion Kit # K71-385-00 for your 3" axle do recommend installing a bump stop when going from underslung (axle under the leaf springs) to overslung (axle over the leaf springs) because of the reduced trailer frame clearance. The closest thing that we have to trailer bump stops is our selection of trailer suspension enhancement which I have linked for you to filter through. These are filtered by axle weight capacity and have...
    view full answer...
  • How to Determine Lift Kit for 2007 Fleetwood Yuma Pop Up Camper
    I tried to look up online what type of faxle your trailer has but I wasn't able to find the info or get a decent picture of the axle setup to know for sure. Can you look underneath the trailer for me and let me know what you find? If you have a standard axle that is 2-3/8 inch in diameter the part # K71-384-00 would be the correct over under kit needed to lift the trailer. If you have Dexter Toflex (torsion) style axle we have the part # K71-707-01 which will give you a lift of 2-5/8...
    view full answer...
  • Solution for Lifting Height of Airstream Trailer with Triple Axle Setup
    If your trailer axles are in the standard orientation with the axles sitting on top of the leaf springs then all you need is 3 pairs of an over-under kit. This will raise the height of your trailer equivalent to the diameter of your axles plus the height of your leaf spring stacks. You should have 3" axles so the conversion kit that you need is part # K71-385-00. If for some reason you have 2-3/8" axles then you need the kit part # K71-384-00. If have already have your axles located...
    view full answer...
  • Will Dexter Over-Under Conversion Kit Work with a Lippert 3,500 Pound Trailer Axle
    You can use Dexter over-under conversion kit # K71-385-00 on your Lippert axle. Usually 3,500 pound round axles are 2-3/8 inches in diameter. If that is the case you would need kit # K71-384-00. If it is 3 inches in diameter (which is rare for 3,500 pound axles) then kit # K71-385-00 would be correct.
    view full answer...
  • Lift Kit Options for Dexter 7,200 Pound Axle on Horse Trailer
    We may have a lift kit available that will work on your Dexter axle, however the P15 SLR information you found refers to general information about where the axle was made. If you can locate a serial number or any other model information on the axle tag, I will be happy to confirm a specific kit if one is available. If the axle is a standard 3 inch round unit, and the leaf springs are currently installed below the axle, you can use the Over-Under Conversion Kit # K71-385-00. This kit...
    view full answer...
  • Do Leaf Spring Bolts Get Torqued Down
    Leaf spring shackle bolts don't get torqued down as that prevents them from being able to move as the suspension flexes. You will end up using lock nuts that just get tightened down till they sit flush and the nylon in the nut keeps it from backing off. If you need a 2 inch lift but are on springs that are totally flat new springs will get you to the height you are wanting. If you can get me the length of your springs when they have not weight on them I can pick you out the correct leaf...
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  • Over-Under Kit for 3,500 Pound Trailer Axle To Provide Additional Clearance
    The over-under kit you will likely want to use is the Dexter Trailer Springs Over-Under Conversion Kit # K71-384-00. This over-under kit fits 2-3/8 inch round axles on trailers with double-eye springs. If your axle is a 3 inch round axle, and your trailer used double-eye springs, you will want to use kit # K71-385-00. I have attached a picture showing what the axle set-up will look like with the over-under kit installed. The spring seat will need to be tack welded to the axle once...
    view full answer...
  • Picking Out Axle Over Under Kit for Al KO 3500 lb Axle
    Can you just measure the diameter of the axle with a tape measure or ruler? If you have the tag in you hand you should pretty easily be able to get a diameter off of it. It SHOULD be 2-3/8 inch but you'll want to verify this. The diameter of your trailer axle will determine the size of the parts that you will need to order. If your axle is 3 inches diameter, the Dexter Trailer Springs Over-Under Conversion Kit, # K71-385-00, would be a great choice and if your axle is 2-3/8 inch diameter...
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  • Raising the Height of a 2015 XLR Hyperlite 29HFS With Lippert Correct Track Already Installed
    If your 2015 XLR Hyperlite 29HFS already has the Lippert Correct Track installed on it then the (discontinued) Correct Track 87220 wouldn't be changing anything. To change the height of your trailer you could move the axle so that it sits under your leaf springs as opposed to above them. Using a Over-Under Conversion Kit, part # K71-384-00 for 2-3/8" axle or part # K71-385-00 for 3" axle, will raise the height of your trailer equivalent to your axle diameter plus the height of your leaf...
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  • Can 20-1/2 Inch Trailer Leaf Springs Be Replaced with 23-1/4 Inch Springs
    If your existing leaf springs measure 20-1/2 inches long then springs that are 23-1/4 inches won't physically fit with your current suspension setup without completely removing and reattaching your hangers and other components to new locations. Keep in mind too that leaf springs stretch a bit over time so the original length of your leaf springs was likely even shorter than 20-1/2 inches. Unfortunately there isn't really a quick fix here as you need to install matching length springs...
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  • Will Slipper Springs Work with the Dexter Trailer Springs Over-Under Conversion Kit
    The Dexter Trailer Springs Over-Under Conversion Kit part # K71-385-00 CAN be used with slipper springs. However, the process of installing this kit on a trailer with a set of slipper springs is more indepth than installing this kit on a trailer with a set of double eye leaf springs. There are two issues that need to be addressed when using the Dexter Trailer Springs Over-Under Conversion Kit on a trailer with slipper springs, movement of the spring seat and dimensions of the u-bolt...
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  • Availability of Axle Flip Kit for Lippert 4,400 Pound Axle
    For the 4,400 pound Lippert axles on your trailer the Dexter Over-Under Conversion Kit # K71-385-00 should work perfectly. This particular kit is designed for 3 inch round axles (which usually indicate an axle rating of 4,400 to 7,000 pounds) and will allow you to move the leaf springs to the top of the axle. It's very likely that the 2.92 inch diameter you took is just a manufacturer variance (or just due to the difficulty of climbing under the trailer and taking an accurate measurement)....
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  • Lift Kit that Fits 2016 Forrest River Sabre 28BH
    For your 2016 Forest River Saber 28BH we have a lift kit that will give you 2 inches of additional height that will help get the nose of your trailer down so that it will be level with the part # LC407131. This attaches to the suspension hangers of the trailer and to the leaf springs/equalizer to then give it the additional height you are looking for. I attached a picture of the kit installed on a tandem axle trailer like yours that has the springs over the axles already as well.
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  • Axle Flip on a 2002 Coleman Bayside
    To determine the correct over-under kit you need to find the diameter of the axle on your 2002 Coleman Bayside. From my research it appears to have a 3,500 pound axle which means it measures 2-3/8 inches. If this is correct then you want to use part # K71-384-00 to flip your axle. If it turns out the axle is 3 inches in diameter instead use part # K71-385-00.
    view full answer...
  • How Much of a Lift Will a Trailer Axle Over-Under Kit give a Trailer
    Doing an over-under kit like the part # K71-385-00 that you referenced will raise your camper the diameter of your axles plus the thickness of your leaf springs. So if you go out and measure those two things on your trailer you will know how much of a lift you would get.
    view full answer...
  • How to Lift a 2017 Keystone Cougar Half-Ton 246RLSWE
    Yes, we do have a way to lift your 2017 Keystone Cougar Half-Ton 246RLSWE. You should have 3" diameter axles on your 5th wheel trailer which means you can use the Over-Under Conversion Kit # K71-385-00. This will lift your trailer equal to the diameter of your 3" axle and your leaf spring stack combined. If you happen to have 2-3/8" axles then you would want to use part # K71-384-00 instead. Aside from an over-under kit you would need to have your current hangers cut off and have...
    view full answer...
  • Is There Trailer Axle Over Under Kit that Could Fit 5x8 Utility Trailer
    If the diameter of your axle was 3 inches the kit part # K71-385-00 would work to allow you to move the springs in relation to the axle. Based on the size of the trailer you'd most likely have a smaller diameter axle like 2-3/8 inch like what the part # K71-384-00 fits. If you have a different diameter axle let me know and I'll see what options you may have.
    view full answer...
  • How To Level And Stabilize A 2011 Eclipse Attitude Toy Hauler
    In order to raise the height of your 2011 Eclipse Attitude Toy Hauler, you can use an axle flip kit like the Dexter Trailer Springs Over-Under Conversion Kit part # K71-384-00 for 2-3/8" diameter axles and part # K71-385-00 for 3" diameter axles. Once you have the trailer at the correct traveling height, you can then begin to enhance the suspension components. Unfortunately, we do not offer an airbag kit for your trailer. However, we do offer several suspension enhancements such as the...
    view full answer...
  • Over/Under Conversion Axle Flip Kit for a 2-3/8 Inch Diameter Round Trailer Axle
    Since the axle on your trailer is 2-3/8 inches diameter you will need the over/under conversion kit # K71-384-00. I have included a link to a video review of this part for you.
    view full answer...
  • Over Under Axle Kit for Dexter 3,500 lb Axle
    A 3,500 lb Dexter axle will have a 2-3/8 inch diameter. The Dexter Trailer Springs Over-Under Conversion Kit # K71-385-00 is designed to work on this axle diameter so it should work just fine to give you additional lift on your trailer for larger tire/rim clearance. This should give you a lift that is 2-3/8 inches plus the thickness of your trailer leaf springs tall. I would think you would have more than enough clearance to go to a 14 inch trailer rim.
    view full answer...
  • How to Lower a Horse Trailer with 6,000 Lb Axles
    In order to lower your horse trailer you are going to want to use the Dexter Trailer Springs Over-Under Conversion Kit part # K71-385-00. This is the most cost effective and easy to install kit we have that will lower your trailer. It is also very popular and highly reviewed. It will lower the trailer the diameter of your axle (3") and height of your leaf spring stack so more than likely around 5-6". I have attached a review video for you. The kit comes with everything you need.
    view full answer...
  • Lift Kit for a 2007 Fleetwood/Coleman Rio Pop-Up Camper
    In order to find out which Dexter Trailer Springs Over-Under Conversion Kit is correct for your 2007 Fleetwood/Coleman Rio you need to measure your axle tube diameter. If it is 2-3/8" which is most likely then you will need part # K71-384-00 but if it is 3" then you will need part # K71-385-00. These kits will then raise the trailer equal to the diameter of the axle tube plus the height of the leaf spring stack.
    view full answer...
  • How to Pick Out Over Under Kit for Jayco Trailer
    The diameter of your trailer axle will determine the size of the parts that you will need to order. If your axle is 3 inches diameter, the Dexter Trailer Springs Over-Under Conversion Kit, # K71-385-00, would be a great choice and if your axle is 2-3/8 inch diameter you could use the Over-Under Kit, # K71-384-00. These kits can be installed without welding but the manufacturer strongly recommends having the new spring seat tacked in place on the other side of the trailer axle.
    view full answer...

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