Description
If you’re tuning a rear-heavy platform or building a dedicated track car, spring rate directly impacts your suspension geometry, weight transfer, and lap times. The Hyperco 18S-325 delivers a stiff 325 lb/in rate in a compact 13-inch package—ideal for cars running coilover setups or custom suspension builds where space is tight. This isn’t a universal part; it’s engineered for specific applications where precision spring rate matters.
Technical Specifications:
- 5.0 in OD
- 13.000 in length
- 325 lb/in rate
- Conventional coil spring
- Rear application
- Blue powder coat
- Sold individually






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