This COIL REPLACEMENT Kit comes with our famous 2600 BOSS Extreme Series double bellow Airbags rated at 2600lb / or 1181Kg @ 100psi, Powder coated brackets, SAE J844 Airline and all fittings to complete the installation. Manufactured by BOSS and branded BOSS you will know that you have a genuine Airbag that has been tested to pressures way beyond any practical application. NOTE: With coil replacement it is likely that you will require Air Management / Onboard Air for certification.