Monroe Magnum Heavy-Duty Commercial Shock Absorbers

The Monroe® Magnum™ line is purpose-built for the relentless demands of heavy-duty trucking and severe-duty fleet operation. U.S.-manufactured and backed by Monroe's century-long legacy in ride control engineering, the Magnum series delivers consistent damping performance, exceptional durability, and reduced cost-per-mile across Class 3–8 commercial vehicles — from over-the-road tractors and trailers to municipal, emergency, and severe-use applications.

At the heart of every Monroe Magnum shock absorber is nitrogen gas-charging technology combined with an extra-large piston bore — making it the first gas-charged, large-bore shock specifically engineered for both air spring and taper leaf suspension systems. This combination delivers fast response and consistent control that today's demanding commercial suspensions require.

Key Features:

• Nitrogen Gas-Charged Design — Reduces fluid aeration for quicker shock response and improved tire-to-road contact, enhancing ride quality and vehicle stability
• Sintered Iron Piston — Precision-dimensioned piston requiring no additional sealing components, delivering an exceptional fit and enhanced long-term durability
• Robust Hydraulic Lockout — Cushions and stops upward suspension movement, preventing over-extension, piston top-out, and damage to the seal assembly
• Heavy-Duty Nitrocarburized Rod — An environmentally responsible surface treatment that maintains the structural benefits of chrome without compromising durability or service life
• Shouldered Bushings — Engineered to resist bushing walkout for a longer, more reliable service life
• Application-Specific Valving — Tuned to perform across a wide range of driving and load conditions for optimal balance and stability
• Twin-Tube Construction — Pressure tube remains full of oil regardless of shock position or travel angle, ensuring consistent performance throughout the full stroke
• High-Strength Weld Construction — Resistance weld with additional 360-degree weld provides up to 15,000 lbs. of tensile strength for maximum structural integrity
• Heavy-Duty Pressure Tube — Increased tube wall thickness significantly reduces the risk of shock damage under extreme load and road conditions

Monroe Magnum shock absorbers help fleet operators reduce cost-per-mile by minimizing downtime, extending tire life, and dampening excessive vibration across the most demanding commercial routes. The Monroe Magnum product line offers application-engineered coverage for the full spectrum of commercial vehicle classes, backed by Monroe's exclusive warranty and risk-free ride program.