Mercedes Sprinter Rear Constant 900 lbs — Special Duty
If your van is permanently heavy, choose Rear Constant 900 lbs helper springs. This setup delivers continuous support for Sprinters with fixed builds or equipment. Result: a level rear, better stability, and consistent ride height every day.
Why “constant 900 lbs”?
Constant-rate kits are engineered for vehicles that are heavy all the time (e.g., camper conversions, service racking, specialty builds). The springs provide ~ 900 lbs of additional support continuously, keeping the rear composed and predictable.
- Always level — maintains ride height with permanent payloads.
- Stability — improved control in crosswinds, cornering, and braking.
- Protection — eases stress on OE springs, shocks, and bump stops.
- TÜV-tested — proven reliability for real-world duty.
Kits at a glance
Select your Rear Constant 900 lbs (Special Duty) kit for Sprinter:
Great for these Sprinter use cases
- Heavy camper/RV builds — fixed cabinetry, water tanks, roof gear.
- Service vans — permanent racks, generator, compressor.
- Expedition rigs — continuous extra mass over the rear axle.
Fitment & compatibility
- Models: Sprinter 2500 / 3500 (US). Exact coverage varies by SKU.
- Drive: FWD or RWD (see each kit card).
- Rear axle: SRW or DRW — check specs.
- Body styles: Cargo, Crew, Passenger, and many RV conversions.
Install overview
- Typical install time: ~60 minutes per axle (shop tools; lift recommended).
- No welding; bolt-on with supplied hardware and instructions.
- Verify ride height and torque after ~100 miles.
Choosing constant vs mixed
If you’re always heavy, pick constant 900 lbs. If your payload varies, the Mixed (Empty & Loaded) option stays comfortable when unladen and adds support under load.
Order your Sprinter kit
Upgrade to rear constant 900 lbs for a level stance and confident handling with permanent payloads. Pick your kit above, confirm fitment, and order online.
