SumoSprings Trailer Helper Springs Review Video

The brackets on the SumoSprings Trailer Helper Springs #SS26MV are 1-1/2" wide so they will fit evenly across the humps on your spring pads. I do not recommend cutting down the spring and you will be able to use these even with only having…

The Timbren Trailer Suspension Enhancement System for Underslung Axles #T92MR is 5-1/4" tall. Timbren recommends The spring be in constant contact with the frame at all times. So ideally you will want exactly 5-1/4" from your axle tube to…

Air bags are only really found on tow vehicles so the best option is SumoSprings. Your 2019 Grand Design Momentum 351 M-Class has 7k overslung axles so the correct kit would be the #SS26MV. You will need one kit for each axle. The #TSS-107-40 you…

According to SumoSprings, 6" is the minimum for the #TSS-106-40. I asked them about this and they said you cannot use these if the space is under 6" so unfortunately they won't work for you. Doing so will overload the springs which can…

You can use leaf springs that are rated higher than the axle without any issues as long as they measure the correct measurement for your trailer. For example the 6-leaf double eye spring for 7,000 lb axles part #e64SR measures 24-7/8" eye to…

Yes, since the SumoSprings kit part #SS26MV is a single axle kit you'd need a quantity of 3 for a triple axle trailer like your Grand Design Momentum 381.

To replace/upgrade the bushings on the rear factory sway bar of your 2009 Class A Newmar Canyon Star RV you need one of the following Roadmaster kits based on the diameter of your factory sway bar: - 1-3/8" Diameter #RM-4139-300 - 1-1/2"…

We have suspension enhancement kits that fit your 2014 Nissan NV 2500 like the Timbren part #TNRNVHD but we do not have any air bag kits that fit.

You can certainly upgrade to heavier duty leaf springs, but you'll still be limited to the capacity of the axles, unless you replace the axles as well. I think the best option is to go with the same capacity leaf springs, but then add helper…

The least invasive suspension enhancement option for your 2023 Ford F-150 is going to be the SumoSprings Rebel Custom Helper Springs item #SS53UV. These have a 3,000 lbs load leveling capacity. They're made of a two piece system that only engages…

Based on what you are saying and your photos, it apprears you have springs that are double eye springs. The springs will need to be based on the load of your trailer. The axle capacity may be difficult to know as you said it appears to be custom. I…

Installing a 4,000 lb capacity leaf spring on a trailer with a 3,500 lb capacity axle will make the suspension stiffer which could then in turn minimize the risk of the axle contacting the frame. However, this is not what I recommend to fix your…