Colors and Hardness – Which material should I choose?

The main difference between the red, yellow and black/grey Strongflex products is their hardness and application. The material's resistance to weather conditions, oils, grease, salt, acids, and solvents is in every case excellent!

Some bushings are available only in 90 ShA hardness (yellow), because the original rubber bushings are made from a hard rubber compound. Using 80 ShA bushings (red) may worsen the handling compared to the original bushing.

We provide a 2-year warranty, confident that our products will perform perfectly throughout this period.

What is the difference between the colors?

🔴 RED – approx. 80 ShA

Suspension components with a hardness similar to the original metal-rubber bushings. However, the polyurethane durability is many times higher, and its unique properties guarantee long-lasting driving comfort. Recommended for users who want improved stability and handling while maintaining comfort.

🟡 YELLOW – approx. 90 ShA

Intended for sports or tuned vehicles (e.g., lowered suspension). The suspension becomes much stiffer, which is important at higher speeds and during dynamic driving.

⬛ BLACK / GREY – marked with the letter "X" in the part number (e.g., 330010AX, 330010BX)

Equivalent in hardness to the red or yellow bushings, but in a color closer to original rubber bushings. Ideal for those who prefer a more subtle, classic look of suspension components.

Main benefits of using Polyurethane

• Extended tire lifespan
• Greater suspension stability
• Improved driving comfort
• Enhanced safety
• Lower maintenance costs