Take on high-mileage, severe-duty miles with the Monroe Magnum Suspension Shock Absorber 65161 — the first gas-charged, large-bore shock designed for the air spring and taper leaf suspensions of class 6-8 trucks and buses. Its nitrogen gas charge delivers the fast response essential to today's heavy-duty truck suspension systems. It fits both the front and rear positions across a wide commercial lineup, including the 1997-2002 Chevrolet B7, 2003-2009 Chevrolet C4500 Kodiak, 1997-2009 Chevrolet C6500 Kodiak, 2003-2009 GMC C4500 Topkick, 1990-2009 Isuzu FTR, 1993-2005 Kenworth K300 and 2001-2003 Peterbilt 270 — see the Buyer's Guide tab for the full application list and engine details.
- Consistent ride: all-weather fluid with special additives for extreme temperatures and reduced oil breakdown, plus a larger 2-3/8-in. reserve tube that holds more fluid (most applications).
- Exceptional handling: 10-stage valving tuned to each vehicle, with a larger 1-3/4-in. bore for more efficient damping control (most applications).
- Strong and durable: shouldered and bonded bushing with sleeve helps protect against bushing walkout, and arc welds up to 360°.
- Built to last: PTFE-coated bearing reduces rod-to-rod-guide friction and a nitrocarburized piston rod adds durability (most applications).
A robust hydraulic lock-out helps prevent over-extension of air bags and piston top-out (most applications), while the nitrogen gas-charge helps maintain tire-to-road contact by reducing aeration and shock fade. Backed by Monroe's 90-day Risk Free Ride Offer and Limited Commercial Warranty.
Frequently Asked Questions
What is the Monroe Magnum 65161?
It's a gas-charged, large-bore suspension shock absorber designed for the air spring and taper leaf suspensions of class 6-8 commercial trucks and buses, using a nitrogen charge for fast damping response.
Does this shock fit the front or rear?
The catalog lists this shock for both the front and rear positions. Check the Buyer's Guide tab to confirm the correct position for your specific vehicle and axle.
What vehicles does the 65161 fit?
It fits many class 6-8 applications such as the 1997-2002 Chevrolet B7, 2003-2009 Chevrolet C4500 Kodiak, 1990-2009 Isuzu FTR and 1993-2005 Kenworth K300. See the Buyer's Guide tab for the full list.
How does the nitrogen gas charge help?
The nitrogen gas-charge helps maintain tire-to-road contact by reducing aeration and shock fade, which supports improved ride and handling under most driving conditions.
What are signs my shock absorbers may need replacing?
Common signs include excessive bouncing, poor ride control, uneven tire wear, or fluid leakage. Have the suspension inspected to confirm the cause before replacing.
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