Press Room

Tenneco to Offer New Line of Premium-Quality Monroe® Magnum™ Commercial Vehicle Shock Absorbers

U.S-Manufactured Shocks Designed to Help Fleets Reduce Cost Per Mile Through Exceptional Durability, Vehicle Stability and Driver Comfort


Monroe, Mich., January 23, 2018 – Tenneco today announced that it will introduce a new line of U.S.-manufactured gas-charged shock absorbers as its main product offering for the North American commercial vehicle market. The new, all-black Monroe® Magnum™ shock absorbers – engineered to help fleets and other users reduce cost per mile through outstanding durability, improved vehicle control and increased driver comfort and satisfaction – were introduced in conjunction with the Heavy Duty Aftermarket Week conference and expo in Las Vegas.

Commercially available beginning April 1, Monroe Magnum shock absorbers will combine an extensive range of advanced design and construction features engineered to address the increased demands of today’s hardworking over-the-road tractors and trailers, municipal, emergency and other severe-use vehicles. Each shock will be covered by the Monroe brand’s exclusive 90-day risk-free ride offer and extensive technical and product application support.

“The Monroe Magnum line has already become a leading choice of commercial vehicle fleets, municipal waste haulers, transit fleets and other customers throughout Europe. We’re pleased to bring this proven brand to the North American market with premium-quality Magnum products manufactured in our Paragould, Arkansas, facility,” said T.J. Fontana, director of sales, commercial vehicle, for the Tenneco North America Aftermarket business.

Key quality and performance designs featured in Magnum shocks include a large-diameter nitrocarburized rod that provides improved compression control and side-load strength; PTFE-coated rod guide bearing that increases durability by minimizing friction between the rod and rod guide; robust hydraulic lock-out design that helps prevent over-extension of the suspension; larger diameter piston to provide greater tuning precision for each vehicle application; and Tenneco’s latest, advanced shouldered bushing design, where applicable, which helps prevent bushing extrusion and related concerns.

New Monroe Magnum shocks also offer twice the pressure-tube thickness of many competing commercial vehicle shocks. Increased pressure tube thickness significantly reduces the chances of shock damage in extreme load and road conditions.

To learn more about Monroe shock absorbers for the commercial vehicle market, please contact your Monroe shocks supplier or visit

Tenneco is an $8.6 billion global manufacturing company with headquarters in Lake Forest, Illinois and approximately 31,000 employees worldwide. Tenneco is one of the world’s largest designers, manufacturers and marketers of clean air and ride performance products and systems for automotive and commercial vehicle original equipment markets and the aftermarket. Tenneco’s principal brand names are Monroe®, Walker®, XNOx® and Clevite® Elastomer.