How to Choose a Shackle Strap and Bolt Kit for Morryde Alltrek 4000 MR89DR
Updated 09/26/2025 | Published 04/21/2025
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Question:
Looking at the Morryde Altrek 4000 which Shackle and Bolt Kit are recommended for use with this?
asked by: David C
Expert Reply:
Hi David! Great question, when it comes to finding the right shackle and bolt kit for your MORryde ALLTREK 4000 part # MR89DR, you’ll need to do a little bit of measuring first.
There are two main kits to choose from, and it all comes down to the length of your current shackle straps. You will need to measure from center to center on the bolt holes:
If your shackles measure 2-1/4", go with kit #MR46ZR
If they’re 3-1/8", you’ll want kit #MR76ZR
Please let me know if you need any help deciding on the kits by commenting below!
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Product Page this Question was Asked From
MORryde ALLTREK 4000 Shock Absorbing Equalizers for Tandem Axle Trailers - 33" Wheelbase - 8K
- Trailer Suspension Parts
- Equalizer Upgrade Kit
- Boat Trailer
- Camper
- Car Hauler
- Snowmobile Trailer
- Utility Trailer
- Double Eye Springs
- 6-1/2 Inch Long
- Tandem Axle
- MORryde
more information >
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Heather A.
9/26/2025
Hey David, did you have a chance to measure your shackle straps and decide on the right kit for your MORryde ALLTREK 4000? I'm asking because your experience could really help others who are looking to upgrade their trailer suspension.