Skip to content
Enhance vehicle stability for towing and hauling with adjustable air assist.
The Monroe Max-Air Shock Absorber is engineered for vehicles that frequently tow trailers or carry heavy loads. This hydraulic shock absorber features an adjustable air assist system that allows for inflation and deflation from 20 PSI to 150 PSI, ensuring optimal vehicle height and stability under varying load conditions. The design accommodates the vehicle's suspension, tires, and transmission limitations, providing a tailored solution for heavy-duty applications.
Constructed with all-weather fluid that minimizes friction, the Max-Air ensures smooth rod reaction and performance across diverse conditions. Its full displaced valving range enhances both compression and extension cycles, contributing to a comfortable ride. The large volume air chamber can be inflated to support heavy loads and deflated for normal driving, making it versatile for everyday use.
Durability is a key feature of the Max-Air, with a sintered iron piston that outperforms traditional metals, ensuring a longer service life. The lubricated air sleeve further reduces friction, promoting smoother operation during suspension movement. Additionally, the shock absorber includes a special air fitting designed to resist air leakage, enhancing reliability and performance.
Features
- All Weather Fluid Contains Special Modifiers To Reduce Friction And Ensure Smooth Rod Reaction
- Full Displaced Valving Range On Both The Compression And Extension Cycles Of The Unit For A Smooth Comfortable Ride
- Large Volume Air Chamber Inflates Up To 150 PSI With Vehicle Loaded. Deflates For Normal Driving
- Lubricated Air Sleeve Reduces Friction For Longer Service Life. Provides Smoother Operation During Suspension Movement
- Sintered Iron Piston Stronger Than Traditional Metals, Enhances Durability For Longer Service Life
- Special Air Fitting To Resists Air Leakage
Specifications
- Manufacturer: Monroe
- Manufacturer Part Number: MA789
- Type: Hydraulic
- With Coil Spring: No
- Extended Length (IN): 20-1/2 Inch
- Compressed Length (IN): 12-3/4 Inch
- Upper Mounting Style: Cross Pin
- Lower Mounting Style: Eyelet
- Adjustable Valving: Yes
- Quantity: Set Of 2
- Universality: Semi-Universal
- Internal Design: Monotube
- Body Color: Black
- Rod Diameter (IN): 1/2 Inch
- Valving Type: Velocity Proportional Valving
- Rod Material: Iron
- Body Material: Steel
- With Reservoir: No
- Includes Dust Shield: Yes
- Includes Hardware: Yes
- Includes Boot: No
- Estimated Install Time (Hours): 1
Compatibility / Fit
- 1978-1981 Buick Century
- 1978-1987 Buick Regal
- 1978-1987 Chevrolet El Camino
- 1978-1983 Chevrolet Malibu
- 1978-1988 Chevrolet Monte Carlo
- 1978-1987 GMC Caballero
- 1973-1976 Nissan 610
- 1974-1977 Nissan 710
- 1978-1981 Oldsmobile Cutlass
- 1978-1984 Oldsmobile Cutlass Calais
- 1980-1983 Oldsmobile Cutlass Cruiser
- 1978-1980 Oldsmobile Cutlass Salon
- 1985-1987 Oldsmobile Cutlass Salon
- 1978-1988 Oldsmobile Cutlass Supreme
- 1982-1986 Pontiac Bonneville
- 1978-1980 Pontiac Grand Am
- 1978-1981 Pontiac Grand LeMans
- 1978-1987 Pontiac Grand Prix
- 1978-1981 Pontiac LeMans
Technical Documents
Shipping & Returns
- This product ships within the continental USA only.
- This product typically ships within 1 to 3 business days.
- Returns are accepted within 30 days for items in like-new condition. For complete details, please see our return policy.
