96 Tracker Rear Suspension Parts: Comprehensive Guide to Replacement and Upgrades

If you own a 1996 Geo Tracker (or Suzuki Sidekick), you know its rear suspension is key to off-road capability and daily driving comfort. Over time, bushings wear, springs sag, and shocks lose damping. This guide covers the essential rear suspension parts for the 96 Tracker, how to identify wear, and what to consider when replacing or upgrading.

Understanding the 96 Tracker Rear Suspension

The 1996 Tracker uses a solid rear axle with leaf springs, a common setup for light trucks and SUVs. The leaf springs support the vehicle and locate the axle, while shock absorbers control oscillation. Key components include:

• Leaf springs: 2 or 3-leaf packs (depending on factory options).
• Shock absorbers: Twin-tube hydraulic (rear length about 22-23 inches extended).
• Bushings: Spring eye bushings, shackle bushings, and shock mounting bushings.
• U-bolts and plates: Secure the axle to the springs.
• Shackles: Connect the rear of the spring to the frame.

Common Wear and Symptoms

• Sagging rear end (vehicle sits lower than front, especially when loaded).
• Excessive bouncing or sway after bumps.
• Clunking or squeaking from the rear.
• Uneven tire wear.
• Rear axle shifts side to side under load.

If you notice these, it's time to inspect and replace worn parts.

Leaf Springs: Options and Considerations

Leaf springs are the backbone of the Tracker's rear suspension. Factory springs provide a decent ride but may sag after 150,000+ miles.

OEM vs. Aftermarket Leaf Springs

OEM replacements maintain stock ride height and load capacity (about 1,000 lbs). They are fine for daily driving.

Aftermarket options include:

• Heavy-duty leaf springs: Often have an extra leaf or thicker leaves. Increase load capacity and reduce sag. Slightly firmer ride.
• Lift leaf springs: Designed to raise the rear 1-2 inches. Common for off-road clearance. May require longer shocks and brake line relocation.
• Add-a-leaf kits: An extra leaf inserted into the existing pack. Budget-friendly, but may be stiffer.

Choosing the right leaf spring:

• For street use, stick with stock height replacements (e.g., from OMIX-ADA or Crown Automotive).
• For light off-road or towing, consider heavy-duty springs.
• For serious rock crawling, lift springs with full leaf packs (Old Man Emu offers a kit with matched shocks).

Installation tips:

• Always replace both rear springs at the same time.
• Use new bushings, U-bolts, and nuts (torque to specs: 65 ft-lbs for U-bolts, 85 ft-lbs for spring eye bolts).
• After installation, cycle the suspension and tighten bolts at ride height.

Shock Absorbers: Which to Choose?

Shock absorbers control the spring's motion. Worn shocks cause bouncing and loss of control.

Types for the Tracker

Standard twin-tube hydraulic shocks are affordable and okay for stock applications.

Gas charged shocks (e.g., Monroe Gas-Magnum, KYB MonoMax) have pressurized gas to reduce fade and improve handling. Better for towing or off-road.

Adjustable shocks (like Rancho RS5000) offer stiffness tuning. Overkill for most, but beneficial if you tow or wheel frequently.

Specs to match:

• Extended length: ~22.0-22.5 inches.
• Collapsed length: ~12.0-12.5 inches.
• Upper mount: Bar pin/pin style.
• Lower mount: Loop with bolt.

Recommendations:

• For daily driving, KYB Gas-a-Just or Monroe OESpectrum are good.
• For off-road, Rancho RS5000X or Bilstein 5100 (20 inches extended; verify fitment).

Installation tips:

• Spray fasteners with penetrating oil a day before.
• Replace any damaged bushings.
• Tighten mounting bolts with the vehicle on the ground (weight on suspension).

Bushings and Hardware: Small Parts, Big Impact

Leaf spring bushings (eye and shackle) are made of rubber or polyurethane. Rubber is stock — comfortable but short-lived. Polyurethane lasts longer and improves handling but can be squeaky (requires grease).

Where to use polyurethane:

• Spring eye bushings: Great for reduced axle wrap.
• Shackle bushings: Good if you frequently off-road.
• Shock bushings: Stick with rubber unless you want stiffer isolation.

U-bolts and plates: Always replace U-bolts when you change springs. They are torque-to-yield and should not be reused. Use grade 8 or better.

Shackles: Aftermarket shackles can adjust pinion angle or add lift. Extended shackles (1-2 inches longer) raise the rear slightly but cause steeper pinion angle — may need shims.

Complete Kits vs. Individual Parts

You can buy parts separately or as a kit. Kits save time but may include lower-quality parts.

Full suspension kit (all parts): For simple replacement, a kit like the "Rear Suspension Package" from Rockaut (or similar) with springs, shocks, and bushings is convenient.

Custom builds: If you want a lift or heavy-duty, buy components individually: leaf springs from General Spring, shocks from Bilstein, and poly bushings from Energy Suspension.

Step-by-Step Replacement Overview

Replacing rear suspension parts is intermediate-level mechanical work. Tools needed: floor jack, jack stands, socket set, torque wrench, penetrating oil, spring compressors (safe handling).

1. Safety: Support vehicle on stands at frame rails. Remove wheels.
2. Support the axle: Place jack under axle to relieve spring tension.
3. Disconnect shock lower bolts and remove shocks.
4. Remove U-bolt nuts and lower axle (watch brake lines).
5. Remove shackle bolt and front eye bolt to free leaf spring.
6. Install new spring in reverse, using new bushings and hardware.
7. Reattach axle with new U-bolts (torque in stages).
8. Install new shocks with new bushings.
9. Tighten all bolts with vehicle on ground (weight on tires).

Check alignment: After lift or spring change, you may need rear camber shims (if adjustable). For stock height, alignment usually stays.

Practical Final Recommendation

For most 96 Tracker owners, a good route is:

• Replace leaf springs with stock-height heavy-duty replacements (e.g., from Crown Automotive or General Spring) to handle extra load.
• Pair with gas-charged shocks (KYB Gas-a-Just or Monroe Gas-Magnum) for improved control.
• Install polyurethane bushings in the spring eyes and shackles (Energy Suspension 4.2109G kit) for longevity.
• Replace U-bolts and nuts with new ones (grade 8).

This combination provides a firm but not harsh ride, handles sagging, and improves off-road capability. Budget about $400-$600 for all parts. If you daily drive on pavement and rarely load heavy, OEM replacements are sufficient. For serious off-roading, consider a 1.5-inch lift with longer shocks and extended brake lines.

Remember to inspect your rear suspension every 30,000 miles. Bushings and shocks wear gradually, so catch them early. Keep your Tracker's rear suspension in top shape — it makes a big difference in safety and enjoyment.