SumoSprings Rebel Custom Helper Springs - 2 Piece - Rear Axle
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2008 Jayco Seneca Motorhome
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2008 Jayco Seneca Motorhome
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When hauling or towing heavy gear, rear-end sag can throw off steering and braking. These SumoSprings Rebel Custom Helper Springs add up to 3,000 lbs of support at 50-percent compression to help keep your ride level and steady. The 2-piece microcellular urethane design connects at the top and bottom so both pieces work together when loaded, helping your factory suspension handle the weight without bottoming out. With a level stance under load, you get more confident control and consistent headlight aim.
You shouldn’t have to choose between load support and comfort. The unique 2-piece setup separates when unloaded, giving your suspension full travel for a smoother ride on rough roads or when running light. Each spring compresses progressively—soft at first for lighter loads, then firming up as cargo weight increases. Whether you’re hauling a camper one weekend or driving empty the next, the ride stays comfortable either way.
When a trailer shifts weight or crosswinds push against you, these springs work independently to keep both sides balanced. That means less body roll through turns and a more planted feel when passing semis or driving over uneven terrain. Even off-center loads or uneven cargo are better controlled, keeping your truck stable and predictable.
Built from closed-cell microcellular urethane, these helper springs resist oils, road salts, and UV rays while performing in temperatures from -25°F to 200°F. They expand and compress vertically with minimal side movement, preventing contact damage in tight spaces. With no air lines or pressure to manage, they’re completely maintenance-free—just bolt them on and go.
Customer Satisfaction Score:
89% were satisfied with this product
11% of customers were not satisfied
Ratings & Reviews
Kate F.
9/10/2025
Sorry to hear you are not pleased with the SumoSprings Ken. This is not the normal feedback that I receive about these. Can you please provide me with the year, make, and model of your truck? I would like to see if there is something we can do to get you in good working order =)
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Condition: Installed
Notes: There are install marks from previously being test fitted. All hardware is included.
Info for this part was:
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Gwendolyn Y.
4/7/2025
Hey Kenneth. That doesn't sound like a pleasant experience. If you do want to go the airbag route you can use part # AL57338. If you want the convenience of onboard air, you can also use part # AL25854. Let me know if you want to return the Sumos, I'd be happy to get return information to you.