H&R Sport Springs drop the W206 C300 by about 30 mm at the front axle and 25 mm at the rear, closing the fender gap and pulling the center of gravity down so the car leans less through a corner. The progressive rate design keeps the first part of the travel compliant for daily driving and firms up as the spring compresses, which holds ride quality while cutting body roll. Rates are matched to the factory dampers, so the OE shocks are retained. The springs are made in Germany from high tensile strength spring steel alloy, are TÜV approved and carry H&R's limited lifetime warranty.
Specifications
| Type | Sport Springs progressive rate lowering spring kit |
| Position | Front and rear (complete set, left and right) |
| Lowering | Approx. 30 mm (1.2 in) front / 25 mm (1.0 in) rear |
| Damper Compatibility | Tuned for the OE dampers; factory shocks retained |
| Material | High tensile strength spring steel alloy |
| Quantity | 1 set |
| Warranty | Limited lifetime |
| Part Number | 28603-1 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2022-2025 | Mercedes-Benz | C300 | 4Matic |
| 2022-2025 | Mercedes-Benz | C300 | Base |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
