Monroe 65549 Gas-Magnum 65 Heavy-Duty Rear Shock Absorber for Class 6-8 Trucks

The Monroe Magnum 65549 is a Gas-Magnum 65 Series rear shock absorber engineered specifically for Class 6–8 commercial trucks and buses operating under high-mileage and severe-use conditions. As the first gas-charged, large-bore shock designed for both air spring and taper leaf suspensions, it delivers the fast response and consistent damping control that demanding heavy-duty suspension systems require.

Key Features:

• Nitrogen Gas Charge: Maintains tire-to-road contact for improved ride and handling by reducing aeration and shock fade
• 10-Stage Full Displaced Valving: Tuned to adjust to road extremes across both compression and extension cycles for a smooth, consistent ride
• Large 1-3/4 in. Bore: Provides more efficient damping control compared to standard 1 in. bore shocks
• 2-3/8 in. Reserve Tube: Holds more fluid to improve sustained performance under heavy use
• All-Weather Fluid: Contains special additives to reduce friction and maintain smooth rod reaction across extreme temperatures
• Sintered Iron Piston: Stronger than traditional metals for enhanced durability and longer service life
• Shouldered & Bonded Bushing with Sleeve: Protects against bushing walkout for improved structural integrity; arc welds up to 360° for added durability
• Hydraulic Rebound Lockout: Included where required for enhanced rebound control
• Metal Dust Shield Included: Protects the shock body from road debris and contamination
• Twin Tube Internal Construction: Proven design for reliable, long-lasting performance

Specifications:

• Extended Length: 21.91 in.
• Compressed Length: 14.55 in.
• Travel Length: 7.92 in.
• Body Diameter: 2.38 in.
• Dust Shield Diameter: 2.72 in.
• Upper Mount: Loop Bushing & Sleeve (LS87) — 5/8 in./16mm Sleeve ID × 3-9/16 in. Sleeve OAL
• Lower Mount: Loop Bushing & Sleeve (LS53)
• Gas Charged: Yes (Nitrogen)
• Adjustable Damping: No
• UPC: 048598240026

Backed by Monroe's 90-Day Risk Free Ride Offer and a Limited Commercial Warranty, the Monroe 65549 is a trusted OEM-quality replacement for fleet maintenance programs seeking to reduce downtime, extend suspension durability, and lower cost per mile.