Spring Rubber 2.5in 90 Durometer Blue

Eibach Spring Rubber – 2.5in ID, 90 Durometer (Blue) – Part #SR.250.0090

Upgrade your coilover or race spring setup with the Eibach 90 Durometer Spring Rubber, engineered to deliver precise rate control and professional-grade performance tuning. Designed for 2.5-inch inside diameter coil springs, this high-durometer blue polyurethane insert provides a firm rate increase—perfect for maximizing chassis stability and cornering performance under load.

The 90-durometer compound offers exceptional resistance to compression and deformation, making it ideal for track, drag, or off-road vehicles where consistent suspension behavior is critical. Each insert adds approximately 0.75 inches of solid height to your spring, helping fine-tune ride height, preload, and rate progression in seconds.

Key Features:

• Firm Rate Adjustment: Adds stiffness for improved balance and cornering response.

• Durable Polyurethane Material: 90-durometer composition resists wear, compression, and heat.

• Precision Fitment: Designed for 2.5" inner diameter coil springs.

• Height Increase: Adds ~0.75" of solid height for tuning preload and travel.

• Quick Installation: Easily slips between coils—no tools required.

• Made in the USA: Built to Eibach’s strict motorsport-grade standards.

Application Notes:
Ideal for coilover-equipped track, off-road, and autocross vehicles. Sold individually. Available in multiple durometers (50–90) for complete spring rate control.