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  1. Trailer Leaf Spring Suspension
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  3. Boat Trailer
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  5. Shackle Links
  6. 2-1/4 Inch Long
MORryde Suspension Upgrade Kit for Tandem Axle Trailers w Correct Track - 2-1/4" Shackle Straps

MORryde Suspension Upgrade Kit for Tandem Axle Trailers w Correct Track - 2-1/4" Shackle Straps

Item # MR58ZR
Our Price: $134.94
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Trailer Leaf Spring Suspension
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Shipping Weight: 12 lbs
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Extend the life of your trailer's suspension with this heavy-duty hardware kit. 1/2" Thick steel shackle straps will outlast the standard straps on your double-eye leaf springs. Wet bolts and bronze bushings help keep your setup lubricated. Great Prices for the best trailer leaf spring suspension from MORryde. MORryde Suspension Upgrade Kit for Tandem Axle Trailers w Correct Track - 2-1/4" Shackle Straps part number MR58ZR can be ordered online at or call 1-800-940-8924 for expert service.
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MORryde Trailer Leaf Spring Suspension - MR58ZR

  • Boat Trailer
  • Snow Trailer
  • Shackle Links
  • 2-1/4 Inch Long
  • Tandem Axle
  • MORryde

Extend the life of your trailer's suspension with this heavy-duty hardware kit. 1/2" Thick steel shackle straps will outlast the standard straps on your double-eye leaf springs. Wet bolts and bronze bushings help keep your setup lubricated.


  • Leaf spring mounting hardware upgrades your leaf spring suspension system
    • Thick shackle straps, wet bolts, and bronze bushings are long-lasting and minimize intensive trailer maintenance
  • Heavy-duty shackle straps replace your factory shackle straps
    • 1/2" Thick shackles are more durable and twice as thick as most stock shackles
  • Wet bolts with built-in grease fittings are long-lasting and ease maintenance
  • Bronze bushings are more durable and last longer than the plastic bushings found on most factory suspensions
    • Work with wet bolts to ensure a well-lubricated setup
  • Quick, simple installation
    • Shackle straps replace your trailer's factory straps
    • Included bolts, nuts, and bushings replace your existing suspension hardware
  • Includes:
    • 8 Shackle straps
    • 8 Wet bolts (for attaching the springs to your equalizers)
    • 6 Wet bolts - 2 silver 2-7/8" long, 4 black 3-3/8" long (for suspending your equalizers and springs from the hangers)
    • 14 Bronze bushings (for spring eyes and equalizer bolt holes)
    • 14 Locknuts
  • Made in the USA


  • Application: tandem-axle trailers with Correct Track alignment and lift kits
  • Shackle strap length (from center of hole to center of hole): 2-1/4"
  • Bolt hole diameter: 9/16"
  • Wet bolt dimensions:
    • 9/16" Diameter x 3-3/8" long
    • 9/16" Diameter x 2-7/8" long
  • Bushing dimensions:
    • Outer diameter: 11/16"
    • Inner diameter: 9/16"
    • Length: 1-3/4"
  • 1-Year limited warranty

UO12-029 MOR Ryde Shackle and Wet Bolt Kit - Tandem Suspension with 2.25'' Shackles and Correct Track

Installation Details MR58ZR Installation instructions

Customer Satisfaction Score:

Customer Reviews

MORryde Suspension Upgrade Kit for Tandem Axle Trailers w Correct Track - 2-1/4" Shackle Straps - MR58ZR

Average Customer Rating:  4.7 out of 5 stars   (475 Customer Reviews)

Extend the life of your trailer's suspension with this heavy-duty hardware kit. 1/2" Thick steel shackle straps will outlast the standard straps on your double-eye leaf springs. Wet bolts and bronze bushings help keep your setup lubricated.


So far so good. Definitely seems to minimize noise, which I’m hoping is also reducing wear and tear. Tricky at first to get grease to flow all the way through the bushings, definitely need to take some weight off the springs to do so. What I did was drive one axle on blocks, then take all the weight off the other axle with a jack to get to the grease to flow properly. Maybe there’s a better way to do it, but this worked for me.


Along with replacing the springs on my tandem trailer I upgraded the equalizers shackles and installed with the wet bolt hardware. I am very satisfied with the quality of components. etrailer’s customer service and quick delivery will continue to be my first go to when I need parts.


The kit came with two bolts that didn't belong in the kit and couldn't use do to being the wrong size.

Well that will not do! I will have our Customer Service team reach out to you to ensure you have all the correct sized bolts.
-- Etrailer Expert Jenny N - 12/02/2022


This kit should have 6 bolts @ 2 1/4" for the leaf ends and equalizer hanger and 8 longer bolts to accommodate the thicker shackles. Can with 12 longer bolts and 2 shorter. Had to cancel my memorial day trip because of it.

Customer Service will contact you.
-- Etrailer Expert Sierra K - 06/03/2022


My suspension squeaked horribly before installing this kit. I installed Lippert Road Armour Equalizer at the same time.
I was surprised to find two nylon bushings worn through completely and all the others in poor condition. Also one link so badly worn I don’t think it would have lasted the season. I few others were in bad condition. Didn’t expect that for a 2018 Unit with what I thought to be low mileage.


2 Bolts are too short. I have the correct track 3rd gen, and this kit comes with two shorter bolts and the rest longer to accommodate the thicker shackles and correct track thicker spring hangers and alignment plates. These two short bolts are where the equalizer mount to the hangers with correct track. I think the older correct tracks didn’t have an adjustment cam where the equalizer is, but the newer generation does, which leaves me needing two more 3 3/8” bolts for it to work. Kit seems sturdy, time will tell of its durability. Packing as others stated is poor, bolts loose in the box, but no big deal.


This is WRONG kit for anything without Correct Track system on trailer. For Coachmen Freedom Express trailers, you will need MR46ZR, which has the correct bolts for your job. Went 2 rounds with Customer Service, on why their system would not give me this correct info. Got no where and cost me extra $xxx to complete the job, by having MORryde over night the 4 correct bolts I needed. I will not ever be ordering from etrailer again.

This kit is designed specifically for tandem-axle trailers with Correct Track alignment and lift kits. You will also want to make sure to measure your shackle strap length from center of hole to center of hole to make sure its 2.25 inches and the bolt hole diameter being 0.5625 inches.
-- Etrailer Expert Katrina B - 07/19/2022


Wet bolt kits are always great


Our gooseneck RV trailer has never gone down the road this smooth. In over 3K miles so far, we still find ourselves waiting for the trailer to bounce over a bump after the truck, but even on Colorado's lousy interstates, we are smiling. Installation was quite easy/straight forward. A must even for new trailers!


Fantastic! I love being the "beef" of this product and I am super happy to have serviceable bolts!


I open box. Plastic is torn away from cardboard and parts are floating in box. No problem

Put all parts together and sorted them out book comes with package but no numbers are listed to what your supposed to have.

So I got 4 shackles with all the parts one had damaged threads 4 of the same size pins and bushings as shackles. And 2 shorter pins and bushings.

Remove from axle old pins and equalizer pins notice pins for front leaf spring and equalizer pin needs to be smaller then shackles pins

My kits got 4shackles pins and 2 short pins needs to have 6 of them.

The parts I have do look good just disappointed quality of shipment

Sorry to here about the loose parts and damage. Customer Service will contact you.
-- Etrailer Expert Sierra K - 09/14/2021


Showed up with the package all ripped open with parts missing

I see that our customer service department has sent you out some replacements. I see they arrived recently. Once you are able to use the items we would love to hear your feedback.
Katrina B - 08/29/2022


A very good upgrade, the old plastic bushings were wore out. I also upgraded to the MORryde SRE 4000, which made a noticeable difference. Diffidently recommend


I used these to replace my existing shackles as my unit has hit 8 years. The shackle combination worked perfectly coupled with only two same size bolts for one side to connect to the frame. However, the remaining wet bolts sets were the same size that accommodates the thick shackles. I had to use my old bolts to put the 5th Wheel back in service. when I ordered the set I didn’t see where the descriptions indicate that. I called around and no one had and 3 inch wet bolts locally (sucks for me). I’ll have to order single ones and go through the removal process again


Parts just as described, fast shipping and awesome upgrade for RV 5th wheel toy hauler.


The sting to frame bolts were too long, otherwise good quality product

Better then original!
John - 11/06/2022


The product looks good, even though I haven’t installed it yet. The kit had fallen apart in the box , and also had broke through the box. The packaging isn’t adequate to hold the parts. I’m surprised nothing was lost. If you are to continue selling this product in the manufactures packaging it will happen to someone else.


I would have given these the highest rating because the product is excellent. The reason for just an average rating is solely because of the customer service or rather lack of customer service. I placed the order for this and 2 additional items to replace the entire suspension on a Passport 3350BH. All items were in stock when order was placed on 1/31/2022 with a delivery date of 02/03/2022. There was a snow storm on 02-03 which delayed the item to the following week which is understandable. However it continued to be delayed until the following week. After my first call I was told the storm had caused a delay. I asked why my order was in a gathering stage for days and then changed to back to order accepted, only response was the snow had slowed them down. After another week of no order, I sent 2 emails with just a standard response of blaming a snow storm 2 weeks prior. I asked several questions on my order which were never answered, I’d have to assume that they just didn’t care to answer or it’s a general email they send to everyone. Long story short the order came on 02/19 which is completely unexceptionable based on a 3 day original ship date. Hard to explain to a customer that a snow storm that we had as well pushed the ship date out 16 days on in stock items.


If you need something for your truck or trailer/camper etrailer has it. They are fast on delivery, have very helpful people to answer any questions and get you what need. Plus they have reasonable prices.


Recieved package in a few days. Looks like a very good product.


Excellent products and ahead of scheduling delivery, thanks etrailer and employees.


took 2 tries to get all the right length bolts, but we got it changed out and all is working well.


The plastic was torn and the parts were piled up in one corner of the box. No instruction pamphlet. All parts were there and worked out 2ell


Exactly as pictured, heavy duty shackles for my RV.They will be in great shape long after I am not.


Thank you etrailer, I had ordered the parts in this kit individually and Paula called and pointed the kit had everything and more for less money. I was sold but waiting to see the quality of the kit. Well it was a well built kit, shackles are beefy, pins are greaseable just what I wanted new bushings too. Great deal!!!

Show More Reviews

See what our Experts say about this MORryde Trailer Leaf Spring Suspension

  • Why is There Some Play In Trailer Suspension When Installed
    Trailer leaf spring suspension needs to have some ability to move otherwise it won't work. This is why when you install kits like the # MR58ZR there will be some play to allow the suspension to function and move.
    view full answer...
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  • Will MORryde Suspension Upgrade Kit for Tandem Axle Trailers # MR58ZR Fit with EquaFlex
    Yes the MORryde Suspension Upgrade Kit for Tandem Axle Trailers # MR58ZR will work with your Equaflex system as it provides you with the same 2-1/4 inch long shackles as well as all of the other standard components needed that would match what you have now.
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  • Can I Replace The Shackles And Wet Bolts On My 2018 Keystone Carbon TT Toy Hauler
    Yes, it is possible. You will need to know the dimensions of your wet bolts, the inner and outer dimensions of the bushings, and the shackle strap dimensions, and the bolt hole diameter. Once you have this information you can find the correct part in the list I have included below. You can filter them by the length of the shackle straps. For example, the MORryde Suspension Upgrade Kit for Tandem Axle Trailers w Correct Track - 2-1/4" Shackle Straps, part # MR58ZR, is an option if you have...
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  • Recommended Replacement Shackle Straps For A 2017 Apex 275BHSS Travel Trailer
    You should always try to stay as close to your current shackle strap length as possible, so in this case I recommend going with the smaller MORryde Suspension Upgrade Kit for Tandem Axle Trailers w Correct Track - 2-1/4" Shackle Straps # MR58ZR. These shackle straps and wet bolts will keep the suspension of your 2017 Apex 275BHSS Travel Trailer well lubricated and properly functioning.
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  • Will MORryde Suspension Upgrade Kit # MR58ZR Fit 2020 Passport 240BH
    Yes, the MORryde Suspension Upgrade Kit part # MR58ZR that you referenced would fit and work great on your 2020 Passport 240BH. This would be the same size as what you have and would be an upgrade in shackle thickness than what you have now. The bushings and bolts are all the correct size as well.
    view full answer...
  • Determining Which MORryde Shackle Upgrade Kit Fits 2018 Highland Ridge TT W/ Correct Track
    The MORryde Shackle Upgrade Kit for Tandem Axle Trailers w/ 2-1/4" Shackles & Correct Track # MR58ZR you were looking at may work on your 2018 Highland Ridge Travel Trailer 322RL with Lippert 5200LB axles and the correct track alignment/lift kit but you will need to measure your current shackles to confirm this. The # MR58ZR measure 2-1/4" long, if your shackles are longer you would need the # MR98ZR which have 3-1/8" long shackles instead. This is measured from center to center of the...
    view full answer...
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  • Can You Use MORryde Suspension Upgrade Kit for Correct Track with Longer Shackles for More Lift
    There are two different MORryde Suspension Upgrade Kits for trailers with a Correct Track Trailer Alignment and Lift Kit, part # MR58ZR for 2-1/4" or part # MR98ZR for 3-1/8". You'll need to measure your shackle straps and go with the one above that matches either of the two. You'll need to go with the same length you have now to avoid the shackles from flipping or binding. If you require more lift, I recommend adjustments to the fifth wheel hitch and or pin box as there is not much else...
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  • Can I Use the 2-1/4 MORryde Suspension Kit # MR58ZR without Critically Changing Trailer Setup?
    Yes. You can use the MORryde Suspension Upgrade Kit for Tandem Axle Trailers w Correct Track - 2-1/4" Shackle Straps # MR58ZR without critically changing your trailer's setup. It is important to note that this particular kit is designed to fit axles with Correct Track alignment and lift kits. If you do not have the Correct Track system, you need the # MR46ZR.
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  • Can I Lift One Side of My Trailer at a Time to Install New Equalizers?
    Yes, you can install the MORryde Shock Absorbing Suspension Equalizers for Tandem Axle Trailers w/ 35" Wheelbase - 8K item # MR27ZR by lifting up one side of the trailer at a time. You don't have to have sides of the axle off of the ground at the same time. Since you're swapping out equalizers you will want to change your shackles too. Depending on what size you need the MORryde Suspension Upgrade Kit for Tandem Axle Trailers - 3-1/8" Long Shackle Straps item # MR76ZR or the MORryde Suspension...
    view full answer...
  • Will The MORryde Wet Bolt Kit Fit a 2014 Grand Design Solitude 5TH Wheel?
    You will need to select either the MORryde Suspension Upgrade Kit for 2-1/4" Shackles # MR58ZR or 3-1/8" Shackles # MR98ZR. Both kits will fit with the Correct Track and Equa-Flex suspension upgrades on your 2014 Grand Design Solitude 5th wheel but you will need to verify the length of your shackles to ensure correct fitment. This is important as if you get a different length strap it will change your ride height and may risk your suspension components hitting your frame. The strap lengths...
    view full answer...
  • Replacement Shackle/Wet Bolt Kit for MORryde CRE/3000 Axle
    The correct wet bolt/ shackle upgrade kit for your MORryde CRE/3000 axle will depend on the length of your current shackle links, measured center hole to center hole. For 2-1/4 inch shackle links, use # MR46ZR or for 3-1/8 inch shackle links, use # MR76ZR. If your suspension uses the Correct Track alignment/lift kit, use # MR58ZR for 2-1/4 inch links or # MR98ZR for 3-1/8 inch shackle links.
    view full answer...
  • Length Options for MORryde Suspension Upgrade Kit for Tandem Axle Trailers
    The MORryde Suspension Upgrade Kit for Tandem Axle Trailers w Correct Track comes in two different lengths, part # MR58ZR for 2-1/4" or part # MR98ZR for 3-1/8". Please note, the above are for models with the Correct Track system. For standard models you'd simply use part # MR46ZR or part # MR76ZR. The shackle straps are measured from the center of each eye. The 1/4" should not create any issues. These are however standard sizes that most trailers use.
    view full answer...
  • Will MORryde Suspension Upgrade Kit MR98ZR Work With Road Armor Equalizers?
    As long as your trailer has the Correct Track and 3-1/8" long shackles measured center to center of the holes the MORryde Suspension Upgrade Kit for Tandem Axle Trailers w Correct Track - 3-1/8" Shackle Straps # MR98ZR will work just fine with your Road Armor Equalizers. If you have Correct Track but have short shackles you will need the # MR58ZR with 2-1/4" shackles instead. Now if your trailer does not have the Correct Track you will need either # MR76ZR if you have 3-1/8" shackles...
    view full answer...
  • Can I Use MORryde Suspension Bolt Kit with Road Armor Equalizers?
    You can definitely use the MORryde suspension bolts if that's what you're wanting to use. The correct kit depends on what your trailer is currently equipped with and how long your shackle straps are (see attached photo of where to measure). If you have the Road Armor and Correct Track 2-1/4" Shackle Straps - # MR58ZR 3-1/8" Shackle Straps - # MR98ZR If you only have the Road Armor 2-1/4" Shackle Straps - # MR46ZR 3-1/8" Shackle Straps - # MR76ZR We always recommend when you do something...
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  • How Many MORryde X-Factor Crossmember Supports Are Needed For A Tandem Axle Trailer?
    The MORryde X-Factor Crossmember for CRE, SRE, or Stock Leaf Spring Suspension # MR33WR includes one adjustable crossmember. Your existing hardware will be too short due to the extra thickness of the crossmember, so you will need to add # MR58ZR if your current shackles are 2-1/4" long, or # MR98ZR if your current shackles are 3-1/8" long. This will install to the leaf spring hangers, located in-between the front and rear axle. So, for full support, a tandem axle trailer will utilize 3.
    view full answer...
    Image 1 for
  • MORryde CRE3000 Cushioned Equalizer Kit for 2021 Coachman Freedom Express Ultra Lite 257BHS
    Since you have a 42 inch wheelbase the correct MorRyde CRE3000 kit is the part # MR54AR. Then for a wet bolt kit that would work with this and has the upgraded shackles you'd want the # MR58ZR.
    view full answer...
  • Will MORryde Suspension Upgrade Kit Fit Lippert Road Armor Equalizers
    The MORryde Suspension Upgrade Kit for Tandem Axle Trailers w Correct Track # MR58ZR will definitely fit Lippert Road Armor equalizers, like the kit # LC696740 since the bolt diameter and length matches what the Road Armor requires. Just be sure the 2-1/4" long shackle matches up to what you currently have and you'll be good to go! Please note the kit you mentioned is for trailers with the Correct Track. If you don't have the Correct Track you'll need the kit # MR46ZR instead.
    view full answer...
  • Upgraded Equalizers and Shackle Straps for a 2017 Eclipse Attitude 5th Wheel Toy hauler
    To upgrade your 2017 Eclipse Attitude 5th Wheel Toy Hauler's equalizers you will want the MORryde Rubber Equalizers for Tandem Axle Trailers - 33" Wheelbase - 8K item # MR87ZR. These equalizers have rubber inserts that dampen road shock. They provide up to 3" of suspension travel and reduce back-and-forth chucking. For an upgraded set of shackle straps that have wet bolts with built-in grease fittings I recommend the MORryde Suspension Upgrade Kit for Tandem Axle Trailers w Correct Track...
    view full answer...
  • What Shackles Do You Recommend For My Equa-Flex Cushioned Equalizers, Part # LC279688
    Since you are going with a slightly bigger equalizer, the Equa-Flex Cushioned Equalizers - Double Eye Springs - Tandem Axle - 6K to 8K, part # LC279688, you will go with a smaller shackle strap. The MORryde Suspension Upgrade Kit for Tandem Axle Trailers w Correct Track - 2-1/4" Shackle Straps, part # MR58ZR, is my recommendation. This change will minimally affect the height of your toy hauler, if they affect it at all. I have included a product description link and video review links below.
    view full answer...
  • Can Equa Flex Equalizers # LC279688 be Used with 5,100 lb Trailer Axles
    Yes the Equa Flex Equalizers part # LC279688 can be used with 5,100 lb axles like what your trailer has. This will also work great with the HD shackle kit part # MR58ZR you are interested in as well. Sounds like you have standard trailer leaf springs as well based on your dimensions.
    view full answer...
  • Replacement 2-1/4" Shackle Strap Recommendation
    For your application I recommend checking out the Shackle Strap # TRSL225 which is 2-1/4" apart for the bolt holes, has an overall length of 3-1/2" and a 1-1/4" width like what you're looking for. We don't carry the TPU5212 kit but from what I'm seeing it looks like a whole kit so for a whole replacement kit I recommend the MORryde Suspension Upgrade Kit # MR58ZR which comes with bolts, shackles, and bushings for a tandem axle trailer.
    view full answer...
  • Tandem Axle Lift Kit For Double Eye Leaf Spring Suspension Systems
    While the Lippert Components Tandem Axle Lift Kit is discontinued we do have the Correct Track Trailer Alignment and Lift Kit # RR23QX that will raise your suspension either 1-1/4" or 2-1/4". It will also give you the adjustability to move the axle up to 1/2" forward or back if the axles are out of alignment. Adding a Wet Bolt Kit # MR58ZR(2-1/4" shackles) or # MR98ZR(3-1/8" shackles) is a great add on when you add the lift kit. The wet bolts help the suspension to travel easier through...
    view full answer...
  • Availability of 2-1/4" Heavy Duty Shackle Straps
    I do have a solution, but the heavy duty shackle straps that come with the # MR58ZR are not available without the rest of the kit. For equivalent shackles you can use the Replacement Shackle Strap for E-Z Flex Heavy Duty Rubber Suspension System by Dexter Axle # 018-024-01. However, depending on the cost you may be better off purchasing an entirely new kit and not the individual shackles. It is also worth noting that the # MR58ZR is for trailers with Correct Track installed. If you do...
    view full answer...
  • Install Instructions for Correct Track Alignment Lift Kit RR23QX
    I attached a link to a page that has install instructions for the Correct Track kit part # RR23QX that you referenced. I'd recommend the shackle bolt kit part # MR58ZR as it comes with the correct size bushings, bolts, and shackle straps.
    view full answer...

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Info for this part was:

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Expert Research:
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Expert Research:
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Edited by:
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Employee Jeff D
Installed by:
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Updated by:
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