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SuperSprings Mounting Kit for OEM Leaf Springs Above the Axle - Extended U-Bolts

SuperSprings Mounting Kit for OEM Leaf Springs Above the Axle - Extended U-Bolts

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Use this kit to mount your SuperSprings leaf spring helper kit if your factory leaf springs are located above your axle and your spring pack is more than 2-3/4" thick. 1-800-940-8924 to order SuperSprings Intl accessories and parts part number MXKT or order online at etrailer.com. Free expert support on all SuperSprings Intl products. Guaranteed Lowest Price and Fastest Shipping for SuperSprings Mounting Kit for OEM Leaf Springs Above the Axle - Extended U-Bolts. Accessories and Parts reviews from real customers.
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SuperSprings Intl Accessories and Parts

  • Vehicle Suspension
  • Leaf Springs Mounting Kit
  • SuperSprings Intl

Use this kit to mount your SuperSprings leaf spring helper kit if your factory leaf springs are located above your axle and your spring pack is more than 2-3/4" thick.


Features:

  • Helps to mount your SuperSprings leaf spring helper kit if your factory springs are set above the axle
    • Provides longer installation U-bolts for spring packs that are greater than 2-3/4" tall
  • Ensures that SuperSprings operate silently when your vehicle isn't loaded
    • Maintains minimal preload tension in the installed SuperSprings for a quieter ride
  • Installs easily - bolts onto vehicle spring pack
    • Nylok self-locking nuts won't loosen
  • U-bolt length: 5-1/4"


SuperSprings diagram of factory springs set above and below the axle

For vehicles with factory leaf springs that set above the axle, this mounting kit ensures that SuperSprings operate silently when the vehicle isn't loaded. The kit includes 5-1/4 inch long U-bolts for applications where the spring pack measures greater than 2-3/4" high.


When factory springs set below the axle, the axle itself serves as a fulcrum for the helper leaf springs. However, for vehicles that have OEM springs that set above the axle, the 2-inch brackets in the mounting kit act as fulcrum points on the underside of the SuperSprings. Furthermore, the shackles at the ends of the helper springs hold them in place and pivot as the load is transferred to the SuperSprings. Because there is minimal preload tension in the installed SuperSprings, you get a quieter ride.


Bolt the mounting brackets to the factory spring packs using the extended U-bolts, cross plates, washers and nuts included in the kit. When installed correctly, the Nylok self-locking nuts won't loosen. After you install the mounting brackets, tighten the U-bolt nuts while the rear of the vehicle is still off the ground. After the springs are installed, lower the vehicle to the ground and retighten the U-bolt nuts.



MXKT Super Springs Mounting Kit for Leaf Springs

Item # MXKT






Customer Reviews

SuperSprings Mounting Kit for OEM Leaf Springs Above the Axle - Extended U-Bolts - MXKT

Average Customer Rating:  5.0 out of 5 stars   (2 Customer Reviews)

Use this kit to mount your SuperSprings leaf spring helper kit if your factory leaf springs are located above your axle and your spring pack is more than 2-3/4" thick.

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See what our Experts say about this SuperSprings Intl Accessories and Parts



  • Which Super Springs for 2019 GMC Sierra 2500 for Towing 5th Wheel Trailer with 1400-lbs Pin Weight
    Yes. The Sumo Springs Super Springs # SSA16MXKT are a great choice to help give you a bit of extra support when towing your 5th wheel. These aren't going to create any lift when the truck is unloaded and will only activate when the truck is under a load to help keep the ride height factory at all times, so they're a great solution for your 2019 GMC Sierra 2500. These springs will also help reduce sway and prevent sagging to improve the safety of your towing experience, as well. If vehicle...
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  • SuperSprings Custom Stabilizer and Sway Kit For a 2004 Chevrolet Silverado 2500HD
    The SuperSprings Custom Suspension Stabilizer and Sway Control Kit # SSA15MXKT will fit your 2004 Chevrolet Silverado 2500HD. These are designed to assist up to 2,600lbs of weight with trucks that have the leaf springs mounted above the axle. This will not increase your weight capacities they are only assisting your suspension. You also have the option to use the SuperSprings Custom Suspension Stabilizer and Sway Control Kit # SSA10MXKT. This has a lower weight rating at 1,650lbs capacity....
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    The correct SuperSprings Custom Suspension Stabilizer and Sway Control Kit (part # SSA16MXKT rated for 1,650 lbs or part # SSA13MXKT rated for 3,000 lbs) for your 2017 GMC Sierra 2500 will largely be dependent on the amount of weight you are carrying/towing. If you can let me know how much weight you are carrying/towing I would be happy to make an exact recommendation. That said, the part # SSA16MXKT would have you covered for most applications and it would not affect the ride too much...
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  • Comparing SuperSprings Custom Suspension Stabilizers for 2016 Chevy Silverado 2500
    I recommend the SuperSprings Custom Suspension Stabilizer and Sway Control Kit part # SSA13MXKT for a 2016 Chevrolet Silverado 2500 which is rated at 3,000 lbs over part # SSA16MXKT which is rated for 1,650 lbs. The reason being, the heavier trailers; larger gooseneck, fifth wheel, and in-bed campers will see greater benefits from the higher capacity whereas smaller bumper pull trailer will see benefits from the lower capacity.
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  • How to Determine Which Hole Setting to Use When Installing SuperSprings # SSA16MXKT
    There are different situations where SuperSprings recommends using different bolt holes of the # SSA16MXKT to give you the optimum support and ride quality. For greater support and ride height when your suspension is under a constant load or if you have an older vehicle with some spring fatigue, install the helper springs using the upper bolt holes. To maintain the factory ride and reduce the effect on your ride height, install using the lower bolt holes. To balance support, height,...
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  • Can SuperSprings Be Used in Conjunction with Air Bags
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    The SuperSprings Mounting Kit for OEM Leaf Springs Above the Axle # MXKT is designed to be used with a SuperSpring Custom Suspension like the # SSA28 and allows you to mount the springs above the axles instead of below them with the rest of the leaf spring pack. These springs are designed for a truck and not a trailer, so it's really not going to be a solution that would work for you. If you can tell us more about your trailer, like the axle capacity and how many axles there are, we can...
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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Tricia G
Written by:
Tricia G
Employee Mary E
Updated by:
Mary E
Employee Wilson B
Updated by:
Wilson B
Employee Noah M
Updated by:
Noah M

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