Premium Monroe Gas-Magnum 60 shock absorbers feature a gas charge for faster response and a stable, comfortable ride. Replacing worn shocks with Gas-Magnum 60 units can help reduce excessive vehicle vibration, resulting in improved tire life, lower cost-per-mile and increased driver comfort. Each Gas-Magnum 60 shock features a robust 1-3/8-inch bore, 5/8-in.-diameter piston rod, hydraulic rebound lockout (where required) and Monroe's 10-stage full-displacement valving, which automatically adjusts to road extremes.