SumoSprings Helper Springs for 2015 GMC Sierra 2500 Pulling Loader Trailer With In Bed Fuel Tank

Updated 05/28/2021 | Published 05/26/2021

Products Featured in This Question

SumoSprings Rebel Custom Helper Springs - 2 Piece - Rear Axle

(147)

$631.99

SumoSprings Rebel Custom Helper Springs - 2 Piece - Rear Axle

(147)

$641.99

SumoSprings Solo Custom Helper Springs - Rear Axle

(2256)

$252.99

Question:

Im looking at this part number and also SSR-207-47. I pull skid steers and packers on bumper tilt bed, trailer and machine weight is 12-15k plus pick-up also have 100 gallon fuel tank in the back in the front of the box. Springs are getting weaker and have about 2-4 inches of squat in the pickup when loaded with machine and fuel causing the front end to lift. I have had super springs and helwig overload springs in the past as well as air bags. Not a fan of bags and springs tend to lift vehicle or compromise unloaded ride. What are the actual height dimensions from the factory bump stop of these 2 different part numbers. Im wondering if the 1500lb springs will be touching all the time or with the 2 piece design of the 3000lb springs be together. It says thats the capacity at 50 but doesnt say how much many inches it must compress spring to get that weight capacity. I have about 6.25 inches from bottom of the metal cup that holds the bump stop to the top of rear end. Looking for answers to these so I know what I can expect. Looking for other suggestions as well.

asked by: Lucas D

Expert Reply:

The SumoSprings Solo Custom Helper Springs # SSR-207-47 are about 5" tall and will leave you with a 1-2" gap when installed on the 2015 GMC Sierra 2500 that is unloaded. I would not recommend using this kit for your situation as I do not feel it will give you the amount of support you need with the heavy trailer and fuel tank.

The SumoSprings Rebel Custom Helper Springs # SSR-203-40-2 are a great option as they will give you a decent ride quality both when loaded and unloaded. They are rated for 3,000lbs of support at the 50% compression. The springs will compress to up to 80% of their original height which is about 7" tall.

If you use the truck for mostly work and wish to achieve the best level ride the SumoSprings Rebel Custom Helper Springs # SSR-203-47-2 have a 5,000lb capacity at 50% compression. I have included a video that we made comparing the Rebel springs on a Silverado 2500 to show the differences both unloaded and with a trailer with about 700lbs of tongue weight. This may help you to make your decision.

The ride heights were also measured at the rear axle for the different systems. The stock suspension would drop 1" with no helper springs with approximately 700lbs of tongue weight. This is what you would experience with the # SSR-207-47 springs. With the # SSR-203-40-2 the rear end sagged about 1/2" and with the # SSR-203-47-2 the truck sagged 3/8".