Naturefalls Complete Strut and Spring Assembly for 2009-2013 Toyota Corolla Front and Rear Heavy-Duty Steel Construction

This complete strut and spring assembly is engineered to replace the front and rear suspension components on 2009-2013 Toyota Corolla models. Each unit incorporates a thicker strut pipe and a heavier-grade spring to deliver enhanced structural intensity and reliable support. The assembly is prefilled with Japanese ENEOS brand damping oil, which maintains stable operation across a wide temperature range from -40C to 80C. The damper has passed 3,000,000 fatigue durability tests with no oil leakage and a damping force decay rate not exceeding 20%, confirming long-term resilience. The spring has undergone over 600,000 continuous fatigue tests to ensure high tensile strength. The welded bracket is validated with 400,000 durability tests under 0.8MPa tensile pressure. Extension and compression lengths match the original factory specifications, preserving correct suspension stroke. The dust cover meets rigorous cycling standards. Each assembly is direct-fit, intended for indoor installation, and arrives ready for mounting without additional component transfer.