Description
A properly tuned rear spring is critical for maintaining consistent weight transfer and chassis balance under braking and cornering loads. The Hyperco 18SN-300 delivers predictable, linear spring rates that minimize squat and body roll while preserving ride quality—essential whether you’re fine-tuning a road course setup or dialing in a drag car. This conventional coil spring integrates seamlessly into existing suspension geometry without custom fabrication, giving you adjustability without compromise.
- Spring Rate: 300 lb/in
- Inner Diameter: 5.0 in
- Length: 11.0 in
- Type: Conventional coil
- Position: Rear
- Finish: Blue powder coat
- Quantity: Single spring
- MPN: 18SN-300






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