15 stiffer than stock sport lowering springs

{"cid":"91222306","title":"EDDYSTAR High-Stiffness Sport Lowering Springs with 20% Stiffer Front and 15% Stiffer Rear for Improved Stability in LEXUS ES250 ES200 ES300 ES350 IS250 IS250C IS300","imgUrl":"https:\/\/img.chinax.com\/nimg\/ad\/cc\/333e4512380ddde9b2e1594613a5-200x200-1.jpg","attrs":{"Price":"$180","Brand Name":"EDDYSTAR","Model Number":"LEXUS ES250 ES200 ES300 ES350 IS250 IS250C IS300","Minimum Order Quantity":"5","Delivery Time":"7days","Certification":"China Factory Certificate of Conformity","Place of Origin":"Guang Dong, China","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union,MoneyGram","Supply Ability":"10000PC+3MONTHS","Packaging Details":"58X37X19 cm","Weight Capacity":"Varies based on vehicle make and model","Handling Improvement":"Enhanced","Design":"Precision engineered","Front Spring Rate":"20% stiffer","Warranty":"Limited Lifetime","Easy Installation":"Yes","Improved Handling":"Yes","Made In":"China","Compatibility With Oem Shocks":"Yes","Durability":"Rust-resistant","Rear Spring Rate":"15% stiffer","Reduces Body Roll":"Yes","Ft And Rr":"-30mm","Durable":"Yes"}}