Types of EVO 8 Coilovers
The Mitsubishi Lancer Evolution 8 is a legendary performance sedan that has captivated automotive enthusiasts for generations. One of the most impactful modifications for enhancing both its visual appeal and dynamic handling characteristics is upgrading to Evo 8 coilovers. These suspension systems allow precise control over ride height, damping, and spring rates—transforming how the vehicle performs on the street or track.
Coilovers are essentially a complete suspension unit combining coil springs and shock absorbers into one adjustable component. This setup gives drivers the ability to fine-tune their vehicle’s stance and handling behavior. Whether you're aiming for aggressive looks, improved cornering grip, or daily drivability, there's a type of Evo 8 coilover tailored to your needs.
Monotube Coilovers
Monotube coilovers feature a single cylinder design that houses both the shock absorber and high-pressure nitrogen gas. This construction helps prevent oil foaming under hard driving conditions, ensuring consistent damping performance even during spirited driving.
Advantages
- Better heat dissipation due to larger piston size
- Improved damping response and feedback
- More reliable in high-performance scenarios
- Easier ride height adjustment
Limitations
- Generally more expensive than twin-tube designs
- Slightly harsher ride quality
- May require additional tuning for comfort
Best for: Track-focused builds, weekend autocrossers, and drivers who prioritize performance and adjustability
Twin-Tube Coilovers
Twin-tube coilovers use two concentric cylinders—one for the main damping chamber and another as a reserve for hydraulic fluid. They’re often found in budget-friendly setups and offer a smoother ride compared to monotube systems.
Advantages
- Softer, more comfortable ride
- Affordable price point
- Ideal for daily commuting
- Good overall value for casual driving
Limitations
- Proneness to overheating under heavy use
- Less responsive damping performance
- Reduced durability in extreme conditions
Best for: Daily drivers, budget-conscious upgrades, and mild performance applications
Adjustable Coilovers
These coilovers provide full control over damping settings, allowing drivers to tailor the suspension feel from soft cruising to stiff track-ready setups. Most models offer between 16 and 30 levels of adjustment for fine-tuned performance optimization.
Advantages
- Customizable damping for different driving conditions
- Enhanced performance on both road and track
- Ability to compensate for changing loads or terrain
- Greater versatility across driving styles
Limitations
- Higher cost compared to non-adjustable units
- Steeper learning curve for optimal setup
- Potential complexity in tuning
Best for: Performance tuners, motorsport participants, and drivers seeking maximum control over their suspension dynamics
Non-Adjustable Coilovers
Designed with a fixed damping rate, these coilovers offer a straightforward upgrade from stock suspension without the need for manual tuning. They come pre-set for either comfort or sport orientation depending on the model.
Advantages
- Simple plug-and-play installation
- Cost-effective way to improve handling
- No maintenance or tuning required
- Reliable and predictable performance
Limitations
- Limited customization options
- Not ideal for mixed-use driving (street/track)
- May not suit all driver preferences
Best for: Enthusiasts looking for a simple, no-nonsense suspension improvement without complex tuning
Street Coilovers
Engineered specifically for everyday driving, street coilovers strike a balance between performance and comfort. Many modern kits include adjustable damping and ride height settings to accommodate personal preferences while maintaining practicality.
Advantages
- Optimized for paved roads and urban environments
- Comfortable yet responsive ride
- Great for daily commuting and weekend drives
- Often includes progressive spring rates for smooth transitions
Limitations
- Not built for sustained high-speed track use
- May bottom out on rough roads if lowered too much
- Can be noisy at very low ride heights
Best for: Daily drivers who want a lowered stance and improved handling without sacrificing comfort
Track Coilovers
Built for high-performance applications, track coilovers deliver maximum stiffness and responsiveness. These systems often feature high spring rates, advanced valving, and reinforced components to withstand the rigors of circuit racing.
Advantages
- Superior body control and cornering stability
- High spring rates for reduced roll and squat
- Often compatible with race-specific tuning
- Durable construction for demanding conditions
Limitations
- Harsh ride quality unsuitable for daily driving
- Higher cost due to advanced engineering
- Potentially illegal for public road use
Best for: Circuit racers, time attack enthusiasts, and dedicated track-day vehicles
| Type | Adjustability | Ride Comfort | Performance Level | Best Application |
|---|---|---|---|---|
| Monotube | Medium-High | Medium | High | Performance-oriented driving, track preparation |
| Twin-Tube | Low-Medium | High | Medium | Daily commuting, budget builds |
| Adjustable | Very High | Variable | Very High | Track use, enthusiast tuning, dual-purpose driving |
| Non-Adjustable | None | Medium-High | Medium | Entry-level upgrades, simple handling improvements |
| Street | Low-Medium | High | Medium | Daily driving with a sporty edge |
| Track | High | Low | Very High | Race circuits, time attack, dedicated track machines |
Understanding Spring Rates
Spring rate refers to the amount of force (in pounds) required to compress a spring by one inch. For the Mitsubishi Lancer Evolution 8, typical spring rates range from:
- Front Springs: 300–1000 lbs/in
- Rear Springs: 250–800 lbs/in
Higher spring rates reduce body roll and increase responsiveness, but can lead to a stiffer, less forgiving ride. Lower spring rates prioritize comfort but may compromise handling precision. Choosing the right spring rate depends on your driving style and intended use:
- Street Driving: 300–500 lbs/in front / 250–400 lbs/in rear
- Enthusiast Use: 500–700 lbs/in front / 400–600 lbs/in rear
- Track Racing: 700–1000 lbs/in front / 600–800 lbs/in rear
Expert Tip: When selecting coilovers for your Evo 8, always consider your primary use case—whether it's daily commuting, weekend canyon carving, or track events. Mixing high spring rates with overly stiff damping can lead to poor traction and compromised safety. It's best to start with moderate settings and gradually dial in performance enhancements based on real-world driving feedback.
Specifications and Maintenance of EVO 8 Coilovers
Key Specifications to Consider
When selecting or upgrading coilovers for your Mitsubishi Lancer Evolution VIII (EVO 8), understanding the key specifications is crucial for achieving optimal performance, ride quality, and durability. Below are the most important factors to consider:
Spring Rates
The spring rate determines how much the spring compresses under load and significantly affects both handling and comfort. In EVO 8 applications, typical spring rates range from 6kgf/mm to 12kgf/mm.
Lower spring rates (around 6-8kgf/mm) provide a more comfortable ride suitable for daily driving, while higher spring rates (10-12kgf/mm) are preferred by performance enthusiasts due to their improved cornering stability and reduced body roll.
It's important to match spring rates with your vehicle’s weight distribution and intended use—street, track, or rally—to avoid compromising performance or longevity.
Dampers
Dampers control the movement of the springs and are critical in maintaining tire contact with the road surface, ensuring safety and responsiveness. Most EVO 8 coilover systems come with adjustable dampers that allow independent tuning of compression and rebound settings.
Compression damping controls how quickly the damper compresses, affecting bump absorption and body control. Rebound damping governs how quickly the damper extends after being compressed, which influences ride smoothness and chassis balance during transitions.
High-quality coilovers often feature multi-stage valving or external adjusters, allowing drivers to fine-tune performance for different driving conditions—from aggressive track setups to smoother street configurations.
Shock Size
The diameter of the shock absorbers plays a major role in heat dissipation, damping efficiency, and overall durability. For EVO 8 coilovers, common sizes range between 48mm and 60mm.
Larger shocks (55-60mm) offer better thermal management and improved oil flow, making them ideal for high-performance driving where sustained heat buildup can degrade smaller units. However, they may introduce more noise and vibration compared to smaller diameters.
Choosing the appropriate shock size depends on your driving style and whether you prioritize comfort, track performance, or a balance of both.
Ride Height Adjustability
EVO 8 coilovers typically offer adjustable ride height, allowing owners to lower their vehicle for aesthetic appeal or aerodynamic benefits. The standard adjustment range is around 30mm to 50mm below stock height.
While lowering improves visual stance and reduces center of gravity, it also decreases ground clearance. This can lead to potential undercarriage damage on uneven roads or speed bumps if the vehicle is lowered too aggressively.
Proper setup should maintain suspension geometry and avoid excessive preload on the springs to ensure long-term reliability and safe handling characteristics.
| Specification | Impact on Performance | Recommended Range/Type |
|---|---|---|
| Spring Rate | Directly affects handling sharpness and ride comfort | 6–12 kgf/mm (dependent on usage) |
| Damper Type | Influences stability, grip, and response over varying terrain | Adjustable compression/rebound preferred |
| Shock Diameter | Affects cooling efficiency and damping consistency | 48mm–60mm (50mm+ recommended for performance use) |
| Material Quality | Determines weight, corrosion resistance, and durability | Steel (durable) vs. Aluminum (lightweight but less durable) |
Essential Maintenance Practices
Regular maintenance of your EVO 8 coilovers ensures consistent performance and prolongs component life. Here are key maintenance practices every owner should follow:
Note: Always perform maintenance tasks with the vehicle securely supported. If unsure about adjusting or servicing coilovers yourself, consult a qualified technician or refer to manufacturer guidelines to ensure safety and proper function.
How to Choose Evo 8 Coilovers
Selecting the ideal coilover setup for your Mitsubishi Lancer Evolution VIII (Evo 8) requires careful consideration of multiple performance and practical factors. The right coilovers can dramatically enhance handling, improve ride quality, and customize your vehicle’s appearance while ensuring reliability over time.
Driving Purpose and Performance Needs
Understanding how you primarily use your Evo 8 is crucial in selecting the appropriate coilover system. Different driving environments demand different performance characteristics from your suspension.
- Street Use: Look for coilovers with adjustable rebound and compression damping for a balance between comfort and control.
- Track/Competition: Prioritize full monotube designs with high adjustability and race-grade valving for maximum performance.
- Daily Driving + Occasional Track: Opt for dual-adjustable coilovers that allow switching between comfort and sport settings.
Pro Tip: Consider multi-stage valving systems that offer both low-speed comfort and high-speed stiffness for dynamic driving conditions.
Installation Requirements and Expertise
While many enthusiasts are tempted to install coilovers themselves, proper installation involves more than just bolting them on. It affects alignment, geometry, and long-term reliability.
- Professional installation ensures correct torque specs and alignment adjustments
- Technicians have access to specialized tools for precise setup
- Post-installation wheel alignment prevents premature tire wear and maintains handling precision
Important: Always request a post-installation alignment check, especially when lowering significantly
Budget Considerations and Value Assessment
Evo 8 coilovers come in a wide range of prices, and it's important to balance cost against performance benefits and longevity. Investing in higher-quality components often pays dividends in both durability and driving satisfaction.
- Entry-level kits: $600–$1,000 – suitable for mild street use
- Mid-range kits: $1,000–$1,800 – balanced performance and comfort
- High-end competition kits: $1,800+ – track-ready setups with full adjustability
Caution: Extremely cheap coilovers may compromise safety, longevity, and ride quality
Suspension Geometry and Spring Rates
The spring rate directly impacts how your Evo 8 handles various driving conditions. Matching the spring rate to your intended usage is essential for optimal performance.
- Lower rates (6–8kg/mm): Better ride comfort, daily driving focus
- Moderate rates (8–12kg/mm): Street/track combo setups
- High rates (12kg/mm+): Pure track applications requiring minimal body roll
Note: Stiffer springs require matching damper valving for best results
| Usage Type | Recommended Spring Rate | Damper Adjustability | Ideal For |
|---|---|---|---|
| Comfort Street | 6–8kg/mm | Single or Dual Adjustable | Daily commuting, show cars |
| Street/Track Hybrid | 8–10kg/mm | Dual Adjustable | Weekend warriors, spirited driving |
| Pure Track | 10–14kg/mm | Triple Adjustable / External Reservoir | Race circuits, time attacks |
| Drift Setup | 8–12kg/mm | Dual or Triple Adjustable | Controlled slides, rear weight transfer |
Warranty & Brand Reliability: Always check warranty coverage before purchasing. A comprehensive warranty (1–3 years minimum) reflects manufacturer confidence in product quality. Reputable brands like Tein, KW, Ohlins, and AST typically offer superior customer support and replacement parts availability.
Additional Considerations: When choosing Evo 8 coilovers, also consider features such as pillow ball mounts, camber plates, dust boots, and corrosion-resistant coatings. These extras can significantly impact long-term performance and maintenance requirements.
DIY Replacement Guide for Evo 8 Coilovers
Replacing coilovers on your Mitsubishi Lancer Evolution VIII (Evo 8) can significantly improve your vehicle's handling, ride quality, and performance. This step-by-step guide will walk you through the process of safely and effectively replacing your coilovers at home, without needing a professional mechanic.
Safety Warning: Working under a raised vehicle is inherently dangerous. Always use proper jack stands rated for your vehicle’s weight, ensure the car is on level ground, and never work under a vehicle supported only by a hydraulic jack. Wear safety glasses and gloves to protect yourself from sharp edges and debris.
Tools and Materials Required
- Jacks and jack stands (rated for your vehicle)
- Wheel chocks
- Lug wrench or impact gun
- Socket set and ratchet
- Wrench set
- Spring compressor tool
- New coilovers compatible with your Evo 8 model
- Gloves and safety glasses
- Torque wrench
- Penetrating oil (e.g., WD-40 or PB Blaster)
Pro Tip: Before purchasing new coilovers, research whether they are designed for street driving or track use. Some coilovers offer adjustable damping and ride height, which may require additional tuning after installation.
Step-by-Step Replacement Process
- Ensure Safety and Prepare the Vehicle
- Park the vehicle on a flat, stable surface and engage the parking brake.
- Place wheel chocks behind the rear wheels (if lifting the front) or in front (if lifting the rear).
- Loosen the lug nuts slightly before lifting the vehicle using a floor jack.
- Use jack stands to securely support the vehicle once it’s lifted. Never rely solely on the jack.
- Remove the wheel completely to gain access to the suspension components.
- Disconnect Suspension Components
- Locate the coilover assembly connected to the strut tower and lower control arm.
- Begin by removing any sway bar links, ABS sensor lines, or other components attached to the coilover.
- Use a socket set to remove the top mount bolts located at the strut tower and the lower bolt connecting the coilover to the control arm.
- If bolts are rusted or seized, apply penetrating oil and allow time for it to work before attempting removal.
- Compress and Remove the Spring (If Necessary)
- If your coilovers include separate springs that need to be transferred, use a spring compressor to safely compress the coil spring.
- Make sure the compressor is properly secured before proceeding.
- Once compressed, carefully remove the upper spring seat and bearing to access the mounting hardware.
- Extract the Old Coilover
- With all fasteners removed, gently push down on the lower control arm or suspension knuckle to create enough clearance to pull the old coilover out.
- Be cautious as the coilover may still have tension even after disconnection.
- Inspect the surrounding suspension components for wear or damage while the system is open.
- Install the New Coilover
- Position the new coilover into place, aligning it with the strut tower and lower control arm mounting points.
- Insert and hand-tighten all bolts and nuts before final tightening.
- Ensure the top mount is correctly oriented and tightened to manufacturer specifications using a torque wrench.
- If applicable, transfer any original equipment such as bushings or dust caps to the new unit.
- Reconnect Suspension Components and Reinstall Wheel
- Reattach any sway bar links, ABS sensors, or wiring that were disconnected earlier.
- Double-check that all bolts are torqued to the correct specification to prevent vibration or failure during driving.
- Mount the wheel back onto the hub and hand-tighten the lug nuts.
- Lower the vehicle off the jack stands and fully tighten the lug nuts in a star pattern to ensure even pressure.
| Phase | Key Tasks | Common Mistakes | Recommended Tools |
|---|---|---|---|
| Preparation | Loosening lugs, lifting vehicle, removing wheel | Skipping wheel chocks or improper jacking points | Jack, jack stands, lug wrench, wheel chocks |
| Disassembly | Removing bolts, disconnecting sway bar/ABS | Overlooking hidden fasteners or damaging wiring | Socket set, wrenches, penetrating oil |
| Spring Work | Compressing and transferring springs | Improper use of spring compressor leading to injury | Spring compressor tool, safety gear |
| Installation | Aligning and securing coilover mounting points | Misalignment causing uneven wear or poor handling | Torque wrench, alignment tools |
| Final Assembly | Reconnecting components and reinstalling wheel | Under-torqued or over-torqued lug nuts | Lug wrench, torque wrench |
Post-Installation Tip: After replacing both front or rear coilovers, consider getting a wheel alignment to ensure optimal tire contact and handling performance. Misaligned wheels can lead to uneven tire wear and compromised steering response.
Testing and Final Checks
- Before taking the car for a test drive, inspect all connections and fasteners again.
- Visually check for any signs of leaks or loose components.
- Take the car for a short drive at low speeds to assess handling and ride comfort.
- Listen for unusual noises like clunking or rattling, which could indicate a loose part.
- Check the ride height adjustment if your coilovers are adjustable—ensure both sides are set evenly.
Frequently Asked Questions About Evo 8 Coilovers
Evo 8 coilovers refer to the suspension system designed specifically for the Mitsubishi Lancer Evolution 8, a high-performance all-wheel-drive sports sedan. A coilover is an integrated suspension unit that combines a shock absorber (damper) and a coil spring within a single assembly. This design allows for precise tuning of ride height, damping, and spring stiffness.
Unlike traditional suspension setups, coilovers offer significant adjustability. For the Evo 8, this means drivers can tailor their vehicle's handling characteristics for various driving conditions—from aggressive track performance to comfortable daily commuting. The ability to lower the car’s center of gravity enhances cornering stability and reduces body roll, making coilovers a popular upgrade among enthusiasts.
Proper maintenance of your Evo 8 coilovers ensures long-term reliability and optimal performance. Here's how to care for them:
- Regular Inspection: Check for oil leaks or visible damage on the damper body. Leaking fluid is a sign of worn seals and may require rebuilding or replacement.
- Cleaning: After driving in dusty or muddy conditions, wipe down the coilovers with a clean cloth and mild detergent to prevent buildup that could damage the finish or moving parts.
- Lubrication: Apply light lubricant to threaded components like spring perches and locking rings to prevent seizing and ensure smooth adjustments.
- Adjustment Checks: Verify that your ride height and damping settings remain consistent. Over time, vibrations and road impacts can cause adjustments to shift slightly.
- Professional Servicing: High-quality coilovers should be serviced every 20,000–30,000 miles or after heavy track use to inspect internals and refresh seals and fluids.
While installing coilovers isn’t overly complicated, it does require some mechanical knowledge and basic tools. Here’s what beginners should consider before attempting installation:
- Required Tools: Spring compressors, torque wrenches, jack stands, and proper lifting equipment are essential for safely removing stock struts and installing coilovers.
- Time Commitment: Installation typically takes 2–4 hours depending on experience level and whether you're replacing other suspension components simultaneously.
- Tutorial Resources: Many online guides and videos walk through the process step by step. Make sure to follow instructions specific to the Evo 8 model year and your particular brand of coilovers.
- Risk Factors: Improper installation can lead to uneven tire wear, poor handling, or even safety issues if not done correctly.
If you're unsure about any part of the process, especially if you lack experience working on suspension systems, it's highly recommended to seek help from a certified mechanic or suspension specialist.
Yes, coilovers can significantly influence ride quality, but the outcome depends heavily on the type of coilovers selected and how they are configured:
- Adjustable Damping: Many high-end coilovers allow independent adjustment of compression and rebound damping. This enables drivers to fine-tune comfort versus control—soft settings provide a smoother ride, while stiffer settings enhance responsiveness at the expense of comfort.
- Sport vs. Street Use: Performance-oriented coilovers tend to deliver a firmer ride, which is ideal for track days but may feel harsh on everyday roads. Conversely, street-focused coilovers often strike a balance between comfort and improved handling.
- Spring Rates: Higher spring rates increase stiffness and reduce body roll, which improves handling precision but can transmit more road imperfections into the cabin.
In summary, well-chosen and properly adjusted coilovers can improve both ride quality and driving dynamics. They give you greater control over how your Evo 8 responds to different surfaces and driving styles compared to standard suspension setups.