Tein EnduraPro and EnduraPro Plus are OEM-replacement struts that offer excellent value and upgraded performance compared to worn-out stock struts. EnduraPro struts have fixed damping; EnduraPro Plus have rebound-adjustable damping. All EnduraPro struts have beefed up thicker metal at the point where the strut meets the knuckle. Tein also claims the main strut body (or "shell case") is around 50% stronger than the stock strut. Finally, EnduraPro and EnduraPro Plus struts feature corrosion resistant coatings and high-performance damper oil for maximum performance and durability.