Energy Suspension Hyper-Flex Master Bushing Set – 1990-1995 Toyota 4Runner 2WD/4WD | Black

Restore the handling, steering precision, and chassis integrity of your 1990–1995 Toyota 4Runner with the Energy Suspension Hyper-Flex Master Bushing Set — a comprehensive polyurethane bushing replacement kit that covers the full suspension and chassis of both 2WD and 4WD 4Runner variants. Energy Suspension’s Hyper-Flex polyurethane outlasts factory rubber 5-to-1, resists oil, coolant, UV, and atmospheric degradation, and delivers a meaningful improvement in suspension precision and chassis feel — whether you’re building a daily driver, a weekend trail rig, or a high-mileage 4Runner restoration. Made in the USA.

Key Features:

• Master bushing set — comprehensive kit covering the full suspension and chassis bushing requirements for the 1990–1995 Toyota 4Runner (2WD and 4WD)
• Energy Suspension Hyper-Flex polyurethane — performance-grade polyurethane formulated for superior durability and handling improvement over factory rubber
• Black finish — clean appearance that suits both stock and modified 4Runner builds
• Outlasts rubber 5-to-1 — Energy Suspension’s Hyper-Flex material significantly outperforms factory rubber in longevity
• Chemical and UV resistant — impervious to oils, coolants, UV exposure, and atmospheric pollutants that degrade rubber bushings
• 2WD and 4WD compatible — covers both drivetrain configurations
• Made in the USA — all Energy Suspension Hyper-Flex components are manufactured in America

Performance Benefits:

• Restored Suspension Precision: Polyurethane’s higher durometer eliminates the bushing deflection that causes vague steering, body roll, and inconsistent suspension geometry on worn rubber bushings — restoring the 4Runner’s handling to better-than-new precision
• Improved Off-Road Capability: Firmer bushings maintain suspension geometry more consistently under the articulation and lateral loads of off-road driving, improving wheel control and chassis stability on trail
• Long-Term Durability: Hyper-Flex polyurethane resists the oil, coolant, UV, and ozone exposure that causes rubber bushings to crack, harden, and fail — outlasting factory rubber 5-to-1 in both street and off-road use
• Complete Refresh: Replacing all bushings simultaneously ensures consistent compliance characteristics throughout the suspension — no mismatched old rubber and new polyurethane feel
• Reduced Chassis Flex: Firmer body and subframe bushings reduce the chassis flex that contributes to body roll and structural vagueness on aging 4Runner platforms

Specifications:

• Brand: Energy Suspension
• Part Number: 8.18103G
• Material: Hyper-Flex performance polyurethane
• Colour: Black
• Kit Type: Master bushing set (complete vehicle)
• Drivetrain: 2WD and 4WD
• Origin: Made in USA
• Application: 1990–1995 Toyota 4Runner

Fitment Information:

• 1990–1995 Toyota 4Runner — 2WD and 4WD variants
• Note: Verify your specific year and drivetrain configuration before ordering
• Installation: Professional installation strongly recommended — full bushing replacement requires suspension disassembly and a press for most bushing locations
• Alignment Required: Full alignment required after installation

What’s Included:

• Complete set of Energy Suspension Hyper-Flex polyurethane bushings for the 1990–1995 Toyota 4Runner (2WD/4WD) — all suspension and chassis bushing locations
• Energy Suspension grease for bushing installation and lubrication
• Installation instructions

Installation Notes:

• Professional installation strongly recommended — most bushing locations require a hydraulic press for removal and installation
• Clean all bushing housings thoroughly before installing new bushings
• Apply the included Energy Suspension grease to all bushing surfaces during installation to prevent squeaking and binding
• Full alignment required after installation — do not skip this step
• Allow bushings to settle for 500–1,000 km before final alignment check
• Re-torque all suspension fasteners after the settling period

Polyurethane vs. Rubber Bushings:

Factory rubber bushings are designed for comfort and noise isolation — their compliance absorbs road and trail vibration, but also allows suspension components to move slightly out of their intended positions under load. On a body-on-frame 4x4 like the 4Runner, this compliance accumulates across multiple bushing locations, contributing to steering vagueness, body roll, and the “worn out” feel that high-mileage 4Runners are known for. Energy Suspension’s Hyper-Flex polyurethane is significantly firmer, maintaining suspension geometry more accurately under load while still providing enough compliance for street and trail use. The trade-off is a slightly firmer ride and potentially more NVH transmission into the cabin — an acceptable compromise for any driver who values handling precision and long-term durability over isolation.

The 1990-1995 Toyota 4Runner Platform:

The 1990–1995 Toyota 4Runner (N80/N130 generation) is one of the most capable and beloved 4x4 platforms in Toyota’s history — a body-on-frame truck-based SUV with solid front axle (pre-1990) or independent front suspension, a proven 3VZ-E or 22R-E engine, and the legendary Toyota reliability that has made these trucks a staple of the overlanding and off-road community. As these 4Runners age, rubber bushing degradation is one of the most common causes of handling deterioration and chassis vagueness. A complete Energy Suspension Hyper-Flex master bushing refresh is one of the highest-impact restoration and performance upgrades available for the platform.

Why Energy Suspension?

Energy Suspension has been manufacturing polyurethane suspension components in the USA since 1983. Their Hyper-Flex master bushing kits cover hundreds of vehicle applications with complete, vehicle-specific bushing sets engineered to fit factory suspension mounting points without modification. Energy Suspension’s polyurethane formulation is designed to balance performance improvement with street and trail drivability — firmer than rubber without the harshness of solid mounts. Their 5-to-1 longevity advantage over rubber makes the Hyper-Flex kit a cost-effective long-term investment for any 4Runner build.

Perfect For:

• 1990–1995 Toyota 4Runner owners refreshing worn or degraded factory rubber bushings
• High-mileage 4Runner restorations seeking a complete chassis and suspension bushing refresh
• Off-road and overlanding builds wanting improved suspension geometry consistency and long-term bushing durability on trail
• Street and dual-purpose builds seeking improved handling precision and reduced chassis vagueness
• Anyone building a performance-focused or restored 4Runner who wants consistent suspension geometry and maximum bushing longevity

Pro Tip: Replace all bushings simultaneously rather than spot-replacing individual worn ones. Mixing old rubber and new polyurethane creates inconsistent compliance characteristics throughout the suspension — the Master Bushing Set ensures a uniform upgrade across the entire chassis for the most consistent improvement in handling and feel.

Note: Full alignment is required after installation. Polyurethane bushings are firmer than rubber and will transmit more road and trail vibration into the cabin — this is normal and expected for a performance bushing upgrade.