Eibach ERS Helper Spring 2.75in Dia 3.94in Length 17 lbs/in (HELPER70)
The Eibach ERS Helper Spring HELPER70 is engineered to keep the main spring properly seated during full suspension droop while preserving the primary spring's rate and travel. With a 2.75 inch inside diameter and a 3.94 inch free length, this helper spring provides reliable preload control and smooth suspension transitions in coilover systems used for road racing, drift, autocross, off-road, and custom builds.
Its flat-wire construction compresses to a compact block height, maximizing usable suspension travel without interfering with main-spring performance. Each spring is individually tested for accuracy, rate consistency, and long-term durability.
Specifications
- Part Number: HELPER70
- Configuration: Single helper spring
- Length: 3.94 in (100.00 mm)
- Diameter: 2.75 in I.D. (70.00 mm I.D.)
- Rate: 17 lbs/in (0.30 kg/mm)
- Block Height: 0.78 in (20.00 mm)
- Travel: 3.16 in (80.00 mm)
- Block Load: 54 lbs (241 N)
- Weight: 0.57 lbs (0.26 kg)
Features
- Flat-wire helper spring design for maximum travel and minimal block height
- Keeps main spring seated when suspension is fully unloaded
- Does not interfere with main spring rate or performance
- Available for most popular coilover spring diameters
- Each spring is individually tested for accuracy and consistency
- Backed by Eibach's five-year warranty
Notes
- Helper springs maintain spring position; they do not significantly increase overall spring rate
- Verify 70mm I.D. compatibility with your coilover hardware
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