Hellwig 61614 SSS Helper Spring 2500 lb 2017-2022 Mercedes Sprinter 2500/3500 SR

Vehicle Fitment

• 2017-2022 Mercedes-Benz Sprinter 2500 - All Wheelbases, All Roof Heights, 2WD/4WD, SRW only - All configurations (Cargo Van, Passenger Van, Crew Van, Cab Chassis)
• 2017-2022 Mercedes-Benz Sprinter 3500 - All Wheelbases, All Roof Heights, 2WD/4WD, SRW only - All configurations (Cargo Van, Passenger Van, Crew Van, Cab Chassis)
• 2019 Mercedes-Benz Sprinter 4500 - SRW only, 2WD/4WD
• 2021 Freightliner Sprinter 2500 - SRW only, 2WD/4WD
• 2021 Freightliner Sprinter 3500 - SRW only, 2WD/4WD

Fitment Notes

• MULTI-LEAF REAR SPRING APPLICATIONS ONLY - the 61614 requires a factory multi-leaf rear spring pack. Not compatible with single-leaf, composite (plastic/fiberglass), or independent rear suspension configurations. Verify that your specific Sprinter variant has a multi-leaf rear spring pack before ordering.
• DOES NOT FIT DUALLY (DRW) APPLICATIONS - the 61614 is for single rear wheel (SRW) Sprinter configurations only. Sprinter 3500XD and 4500 dually models and any DRW Sprinter variant are excluded.
• The Sprinter 4500 fitment is listed for 2019 only on Hellwig's current product page. For 2020 and newer Sprinter 4500, confirm fitment with Hellwig at 1-800-HELLWIG (435-5944) before ordering.
• Freightliner Sprinter fitment is confirmed for 2021 model year (2500 and 3500). Freightliner-badged Sprinters sold in other years (these were sold under the Freightliner brand during the NAFTA-market distribution era) should be verified with Hellwig for compatibility.
• All mounting hardware and Silent Support System (SSS) anti-noise bushings are included in the kit - no separate mounting hardware kit is required. One kit (part #61614) serves both sides of the vehicle (2 helper spring leaves total, 1 per side).
• The 61614 is designed for the VS30 generation Sprinter (2018-onward North American market, though the listing begins at 2017 for the pre-refresh VS30 launch year). For earlier VS30 (2014-2016) or NCV3 Sprinter (pre-2014), verify fitment with Hellwig directly.
• Popular with RV and camper van conversions, Class B motorhomes, and cargo/utility operators who need additional rear spring support for heavy payload configurations without the complexity of air bag systems.

Features

• Up to 2,500 lb. level load carrying capacity - engineered for 3/4-ton and 1-ton Sprinter applications operating as camper vans, Class B RVs, overloaded cargo vans, refrigerated delivery vehicles, or passenger shuttles that regularly carry loads approaching the vehicle's GVWR.
• Over-axle mounting design positions the helper spring assembly directly above the rear axle on top of the factory multi-leaf spring pack - a positive-engagement mounting approach that delivers consistent load support and improved lateral stability compared to simpler behind-axle designs.
• Silent Support System (SSS) bushings - Hellwig's patented anti-noise isolation bushings are included and installed between the helper spring leaves and the factory leaf pack. These high-durometer polymer bushings absorb micro-vibrations and prevent metal-on-metal contact, delivering a quieter, more refined ride quality under load - critical for the Sprinter's thin-wall van body where underbody noise is easily transmitted to occupants and cargo.
• Progressive rate design - the 61614 has virtually no effect on ride quality when the Sprinter is unloaded or lightly loaded, activating and firming progressively as the rear load builds. Preserves the van's standard compliance and ride comfort when running empty.
• Fully adjustable load rate via the included heavy-duty U-bolts - independent left and right side adjustment allows fine-tuning for specific payload requirements and correction of uneven side loads from off-center cargo, upfitter equipment, or camper buildouts.
• Each spring leaf is hot-formed and heat-treated from ASTM 5160 alloy spring steel for maximum fatigue resistance and long-term durability under sustained commercial and recreational use.
• Silver hammertone powder coat finish on spring steel components and zinc-plated hardware for corrosion resistance in road salt, wet-weather, and high-humidity environments encountered in commercial van operation.
• Eliminates the rear-end sag and squat that compromises the Sprinter's ride height, headlight aim, door operation, and handling balance under heavy payload - particularly noticeable in camper van conversions and refrigerated cargo builds where weight is concentrated at the rear.
• Bolt-on installation using common hand tools - no drilling or permanent modifications to factory components. All hardware included, no separate mounting kit purchase required.
• Manufactured at Hellwig's ISO 9001 and ISO 14001 certified facility in Visalia, California - made in the USA since 1946, backed by Hellwig's Limited Lifetime Warranty against manufacturing defects.

Specifications

• Level Load Capacity: Up to 2,500 lbs.
• Spring Series: Silent Support System (SSS) / Pro Series
• Spring Rate Design: Progressive Rate
• Construction: Single-leaf per side (2 leaves total), over-axle mounting
• Spring Material: ASTM 5160 heat-treated alloy spring steel
• Spring Finish: Silver hammertone powder coat
• Hardware Finish: Zinc-plated
• Silent Support System Bushings: Included
• Leaf Spring Type Compatibility: Multi-leaf applications ONLY
• Drivetrain Compatibility: SRW (single rear wheel) ONLY - does NOT fit DRW/dually
• Mounting Hardware Included: Yes - complete kit, no separate mounting kit required
• Drilling Required: No
• Country of Manufacture: USA (Visalia, CA - ISO 9001 / ISO 14001 certified)
• Warranty: Limited Lifetime

Included Components

• 2x ASTM 5160 alloy spring steel leaves (1 per side), silver hammertone powder coated
• Heavy-duty U-bolts, zinc-plated
• Mounting brackets, zinc-plated
• Silent Support System (SSS) anti-noise polymer bushings
• All associated nuts, washers, and fasteners, zinc-plated
• Installation instructions

Product Description

The Hellwig 61614 Silent Support System Series Helper Springs are Hellwig's purpose-built load management solution for the 2017-2022 Mercedes-Benz Sprinter 2500 and 3500 (SRW), 2019 Sprinter 4500, and 2021 Freightliner Sprinter 2500/3500 - delivering up to 2,500 lbs. of supplemental rear load capacity with the refined, noise-isolated installation quality of Hellwig's SSS Pro Series. Designed specifically for the VS30-generation Sprinter's multi-leaf rear spring configuration, the 61614 addresses one of the most common complaints from Sprinter operators running near or at payload capacity: excessive rear-end sag that degrades ride quality, compromises headlight aim, strains the factory leaf pack, and - in camper van and RV applications - creates an unstable, pitch-heavy driving posture on the highway.

The defining feature of the SSS Pro Series is Hellwig's patented Silent Support System bushings - high-durometer polymer anti-noise isolators installed between the helper spring leaves and the factory leaf pack that eliminate the metal-on-metal vibration and squeak that can occur with conventional over-axle helper spring designs. In the thin-wall aluminum body of the VS30 Sprinter, where interior noise transmission is a primary concern for camper van owners and passenger shuttle operators alike, the SSS bushings deliver a measurably quieter, more refined ride quality under load. The over-axle mounting design positions the spring leaves directly above the rear axle for maximum load engagement and bilateral stability, and the progressive spring rate keeps the springs dormant during empty or lightly loaded driving so the van retains its normal ride character.

Two critical fitment requirements: the 61614 is for multi-leaf rear spring Sprinters only (not single-leaf or composite spring configurations), and it does not fit dually (DRW) Sprinter variants - including the Sprinter 3500XD and 4500 in dually form. For the Sprinter 4500 beyond the 2019 model year, verify fitment with Hellwig at 1-800-HELLWIG (435-5944). The complete kit includes both spring leaves, all mounting hardware, SSS bushings, and installation instructions - no separate mounting kit purchase is required. Manufactured at Hellwig's ISO 9001 and ISO 14001 certified factory in Visalia, California and backed by a Limited Lifetime Warranty.