The VY and VZ Commodores remain popular platforms for both daily driving and performance builds thanks to their strong chassis, rear-wheel-drive layout, and excellent aftermarket support. However, as these vehicles age, factory suspension components often become tired, leading to reduced handling, body roll, and poor ride quality.
Upgrading the suspension is one of the best ways to transform the driving experience of a VY or VZ Commodore. Whether you’re aiming for improved comfort, sharper handling, or a lowered street stance, the right upgrades can make a dramatic difference.
Why Upgrade the Suspension?
Factory suspension was designed for comfort and general use, not long-term performance.
Benefits of Upgrading
- Improved handling and cornering
- Reduced body roll
- Better steering response
- Improved tyre wear
- Enhanced ride comfort (with quality parts)
- More stable high-speed performance
Even a basic refresh can make an older Commodore feel significantly tighter.
1. Performance Shock Absorbers
Upgrading shock absorbers is one of the most effective suspension improvements.
Recommended Options
- Gas-charged performance shocks
- Adjustable dampers (premium setups)
- Heavy-duty touring shocks
Benefits
- Reduced bouncing
- Better control over bumps
- Improved cornering stability
Worn factory shocks are one of the biggest causes of poor ride quality in VY and VZ models.
2. Lowering Springs
Lowering springs are one of the most popular upgrades for Commodore owners.
Types
- Mild lowering (comfort-focused)
- Moderate lowering (balanced setup)
- Aggressive lowering (show/performance)
Benefits
- Lower centre of gravity
- Reduced body roll
- Improved stance
- Sharper handling
Proper spring selection is important to avoid overly harsh ride quality.
3. Coilover Suspension Kits
Coilovers offer the most complete suspension upgrade.
Benefits
- Adjustable ride height
- Adjustable damping (on some kits)
- Best handling performance
- Customisable setup
Best For
- Enthusiasts
- Track use
- Performance builds
Coilovers provide maximum control over suspension tuning.
4. Sway Bar Upgrades
Sway bars (anti-roll bars) greatly reduce body roll.
Benefits
- Flatter cornering
- Improved stability
- Better steering response
Front vs Rear Upgrades
- Front sway bar: improves turn-in response
- Rear sway bar: reduces understeer
A balanced setup improves overall handling.
5. Polyurethane Suspension Bushes
Replacing factory rubber bushes with polyurethane is a common upgrade.
Benefits
- Sharper steering feel
- Reduced suspension movement
- Improved durability
Common Areas
- Control arms
- Sway bar mounts
- Differential bushes
Poly bushes significantly improve handling precision.
6. Strut Braces and Chassis Bracing
Chassis flex can affect handling performance.
Types
- Front strut brace
- Rear strut brace
- Underbody braces
Benefits
- Improved chassis rigidity
- Better steering feedback
- Reduced flex under load
These are simple but effective upgrades.
7. Adjustable Control Arms
Useful for alignment and handling tuning.
Benefits
- Improved wheel alignment control
- Better tyre wear management
- Enhanced cornering ability
Best For
- Lowered vehicles
- Performance setups
8. Heavy-Duty Ball Joints and Tie Rods
Essential for both safety and performance.
Benefits
- Improved steering precision
- Increased durability
- Reduced play in suspension
These should always be inspected when upgrading suspension.
9. Complete Handling Packages
Many aftermarket brands offer full suspension kits.
Typical Package Includes
- Shock absorbers
- Springs or coilovers
- Sway bars
- Bushes
Benefits
- Balanced performance
- Matched components
- Easier installation
A full package ensures consistency across the suspension system.
Best Suspension Setups by Use Case
Daily Driver Setup
Recommended
- Quality gas shocks
- Mild lowering springs
- Standard sway bars
Benefits
- Comfort-focused
- Improved handling
- OEM-like ride quality
Street Performance Setup
Recommended
- Performance shocks
- Moderate lowering springs
- Upgraded sway bars
- Poly bushes
Benefits
- Sharper handling
- Reduced body roll
- Better cornering stability
Track-Focused Setup
Recommended
- Coilovers
- Heavy-duty sway bars
- Full poly bush kit
- Adjustable arms
Benefits
- Maximum control
- Adjustable performance
- Track-ready handling
Common Suspension Upgrade Mistakes
Over-Lowering the Vehicle
Can cause:
- Poor ride quality
- Suspension damage
- Tyre wear issues
Mixing Incompatible Parts
Can lead to:
- Imbalanced handling
- Premature wear
Ignoring Bush Condition
Old bushes can ruin new suspension upgrades.
Cheap Shock Absorbers
Often result in poor performance and short lifespan.
Suspension Upgrade Order of Importance
1. Shock Absorbers
Biggest improvement in ride quality.
2. Springs or Coilovers
Controls ride height and stiffness.
3. Bushes
Improves steering feel and stability.
4. Sway Bars
Reduces body roll.
5. Bracing
Fine-tunes chassis rigidity.
Benefits of a Proper Suspension Refresh
Advantages
- Improved handling
- Safer braking and cornering
- Reduced tyre wear
- Better ride comfort
- Increased driving enjoyment
A refreshed suspension system can make a high-kilometre Commodore feel like a much newer car.
Final Thoughts
Upgrading the suspension on a VY or VZ Commodore is one of the most effective ways to improve both performance and driving enjoyment. Whether you choose a simple shock and spring upgrade or a full coilover and bush overhaul, the improvements in handling, stability, and comfort are immediately noticeable.
The key is choosing a balanced setup that suits your driving style and avoiding overly harsh or mismatched components. With the right combination of parts, the VY and VZ Commodore remains a highly capable and enjoyable platform on both street and spirited driving conditions.
Related Articles
- VY, VZ Commodore Suspension Problems
- VY, VZ Lowering Guide
- Best Coilovers for Holden Commodores
- VT–VZ Commodore Steering Rack Leak Guide
- Holden Suspension Maintenance Guide
- How to Inspect a Commodore Before Buying