Suspension Shock / Strut Mount Bushing

What Are Shock and Strut Mount Bushings?

Shock and strut mount bushings are critical rubber or polyurethane isolators that cushion the connection between your vehicle's shock absorbers or struts and the chassis. These components serve a dual purpose: they absorb road vibrations and impacts while allowing controlled suspension movement, and they prevent metal-to-metal contact that would otherwise transmit harsh noise and harshness into the cabin. Over time, factory rubber bushings deteriorate from exposure to heat, oil, road salt, and constant flexing, leading to clunking sounds, increased suspension play, and compromised handling precision.

Why Upgrade Your Mount Bushings?

Replacing worn mount bushings restores your suspension's original geometry and performance characteristics. Many enthusiasts choose to upgrade from factory rubber to performance polyurethane bushings, which offer superior durability and resistance to compression set. Polyurethane maintains its shape under load far longer than rubber, providing more consistent suspension response and improved steering feedback. This upgrade is particularly valuable for vehicles used in spirited driving, autocross, or track days, where precise suspension control directly impacts cornering capability and driver confidence. Even daily drivers benefit from reduced body roll and elimination of the vague, disconnected steering feel that develops as rubber bushings age.

Choosing the Right Bushings for Your Application

When selecting shock and strut mount bushings, consider the durometer rating of polyurethane options, which indicates firmness. Softer compounds prioritize comfort and quiet operation, while harder formulations maximize performance at the expense of some noise, vibration, and harshness isolation. Street-driven vehicles typically benefit from bushings in the 70A-80A durometer range, balancing performance gains with daily drivability. Installation often requires specialized tools to press bushings into mounts, though some designs offer easier slip-fit configurations. Always inspect the entire strut mount assembly during bushing replacement, as worn bearings or damaged plates can undermine the benefits of new bushings.

Top Brands in Suspension Mount Bushings

The market offers several proven manufacturers specializing in suspension bushings. NOLATHANE delivers Australian-engineered polyurethane solutions known for their precise fitment and compound formulations tailored to varied driving conditions. Energy Suspension pioneered the performance polyurethane bushing market with their signature red Hyper-Flex material, offering comprehensive kits for countless vehicle applications. Prothane provides durable polyurethane options with a focus on maintaining street comfort while delivering noticeable handling improvements. Fairchild offers practical replacement solutions that restore factory specifications without the harshness of competition-grade materials. Moog Chassis Parts supplies problem-solver designs addressing common OE failure points with enhanced rubber compounds and structural improvements.