Rear SumoSpring - 635kg - Yellow suits 2007-2021 Mercedes-Benz Sprinter 3500 4x2 by SuperSprings International
Every SumoSpring is handmade with care, making each one unique with its own natural characteristics, such as slight color variations and surface bubbles, proof of the craftsmanship that goes into every piece.
Rear SumoSprings are a maintenance-free suspension enhancement built to create a better journey. Handmade from micro-cellular polyurethane, they are designed to reduce rear-end sag and increase load carrying ability while decreasing vibration, stabilizing sway, and softening harsh rebounds.
The SSR-338-54 has a 635kg (1,400 lb) capacity when compressed at 50%. The Yellow SumoSprings shouldn’t be compressed past 55% of their original height in order to keep full memory rebound.
No Leaks. No Lines. No Hassle.
Suspension to tow, haul, or cruise in comfort.
Innovative suspension solutions that
make the journey better™.
SumoSprings are not made from rubber.
They are a progressive spring with a very soft initial engagement. That means that as more weight added, the harder they get and more they push back, providing support and control when you need it without affecting the factory ride when unloaded.
Made from micro-cellular polyurethane
These are a suspension enhancement built to create a better journey. Manufactured from our micro-cellular polyurethane, they are designed to reduce rear-end sag, decrease vibration, stabilize sway, and soften harsh rebounds.
Aussie-Proven Performance
From bitumen highways to corrugated outback tracks, SumoSprings have been tested and trusted in real-world Aussie conditions. They handle the lot without breaking a sweat.
Safer Towing & Heavy Loads
Keep your vehicle level and stable when towing or carrying big loads. SumoSprings reduce body roll, improve braking, and make handling easier — giving you confidence behind the wheel.
Smoother Rides, Less Hassle
SumoSprings are built to take the bounce and sway out of your drive. Whether you’re towing a caravan, carrying a heavy load, or just cruising around town, you’ll notice the comfort straight away.
FREQUENTLY ASKED QUESTIONS
SuperSprings are progressive rate load-carrying leaf springs that improve ride quality and reduce sag under heavy loads, helping vehicles stay level while towing or carrying cargo.
SumoSprings are progressive rate, high-performance suspension springs made from micro-cellular polyurethane, designed to enhance load-carrying capacity, reduce sag, and improve stability under varying loads.
Coil SumoSprings combine progressive coil design with high-capacity load support, offering a compact, durable solution for vehicles needing extra load-carrying ability.
- SuperSprings: Leaf-style, moderate load support, improves ride and reduces sag.
- SumoSprings: Progressive polyurethane spring, adds stability and load capacity without replacing factory suspension.
- Coil SumoSprings: Compact coil design that increases weight-carrying capacity by up to 30%, ideal for vehicles with limited suspension space or higher load demands.
- SuperSprings: High-strength steel with durable composites.
- SumoSprings: Made from micro-cellular polyurethane, engineered to withstand heavy loads, resist fatigue, and perform in harsh Australian conditions.
SuperSprings are built for long-term durability, resistant to corrosion, fatigue, and wear, making them ideal for Australian roads and off-road conditions.
They reduce sag, improve stability under load, enhance cornering and braking, and maintain proper ride height, providing a safer and more comfortable driving experience.
Unlike airbags, SuperSprings are maintenance-free, don’t require compressors or fittings, and provide a progressive, natural suspension feel, even when the vehicle is unladen.
Yes. They are designed to support trailers, boats, caravans, and heavy loads, reducing rear sag and improving steering and braking performance.
Absolutely. Their robust construction and progressive rate design help maintain vehicle stability and ride comfort over rough terrain.
No. SuperSprings enhance both loaded and unloaded driving, providing smooth handling without harshness or bounce.
Selection depends on your vehicle and intended application, including whether it uses leaf or coil suspension. SumoSprings also come in different colour grades for load capacity and the Rebel variant, designed for higher-load applications and extreme use.
Yes. They are bolt-on solutions with minimal modifications, and professional installation is recommended for optimal performance.
No. Unlike airbags, SuperSprings are maintenance-free, with no air compressors, fittings, or regular checks required.
Yes. By reducing sag, distributing load evenly, and stabilising the suspension, SuperSprings enhance ride quality, control, and safety in all driving conditions.
