Just looking at the Eibach site,
Red springs are Sportline,
Extreme Performance Meets Extreme Style
Race-Car Like Handling
Lower than our Pro-Kit. Lowers Vehicle 1.7" - 2.3"
Progressive Spring Design for Excellent Ride Quality
Black are the Pro kit 1,
High Performance Handling
Aggressive Looks
Lowers Vehicle* 1.0" - 1.5"
Stop Quicker, Corner Faster and get Better MPG
Progressive Spring Design for
Excellent Ride Quality.
Hope that helps.
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