crossroadgaragellc.com: aFe Sway A Way 2.5 IN x 4 IN Bump Stop Kit aFe 2.5in x 4in Sway A Way Bump Stop Kit (56600 0404) aFe Universal Control Sway A Way Bump Stop 2.5in x 4in 56600 0404. Control Sway A Way 2. 5 Hydraulic Bump Stop (56600 0404) by aFe. Quantity: 1 per Pack. Designed utilizing the latest technology, this aFe Control Stage 1 Package by aFe features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards. aFe (Advanced Flow Engineering, Inc.) manufactures performance products for late model cars, light trucks and SUVs. The company was founded in 1999 with an initial concentration on high performance air filters. Since then, the company product line has broadened to include cold air intakes, fluid filters, exhaust systems, intake manifolds, intercoolers, programmers, differential covers, transmission pans and throttle body spacers. The team of engineers, machinists, production and sales people at aFe have many years of experience in their respective positions, and together work to ensure they produce the best automotive products on the market. Features: CNC Machined Components Made To The Strictest Tolerances 1 5 8 in. Shafts For Strength And Durability 4 in. Stroke Multi Seal Carrier To Ensure Zero Leakage Specifically Formulated 7wt. Fully Synthetic Shock Oil