The Citroën 2CV is famous for its unique and effective suspension system. Unlike conventional cars, the 2CV uses a interconnected system with leading arms, coil springs, and friction dampers. If you own or restore a 2CV, understanding these parts is essential for keeping the ride smooth and safe. This guide covers the main suspension components, what to look for when buying replacements, and tips for installation.
Understanding the 2CV Suspension System
The 2CV’s suspension is designed to provide a compliant ride over rough terrain while maintaining stability. Each wheel is independently suspended via a trailing arm that pivots on a rubber bush. The front and rear are interconnected by a system of torsion bars and linkages, but the key wearing parts are generally the trailing arm bushes, springs, and dampers.
Key Components of 2CV Suspension
- Trailing Arms: These are the main structural arms that connect the wheel hub to the car’s chassis. They pivot on rubber or polyurethane bushes.
- Coil Springs: The 2CV uses small coil springs that sit over the trailing arm. They are relatively soft to give the famous “magic carpet” ride.
- Friction Dampers (Shock Absorbers): Instead of traditional hydraulic shocks, the 2CV uses friction dampers. These are disc-type units that provide damping through friction plates.
- Suspension Bushes: Rubber or polyurethane bushings that allow the trailing arms to move smoothly.
- Torsion Bars: Used for interconnection between front and rear, but less frequently replaced.
When to Replace 2CV Suspension Parts
Over time, rubber bushes harden and crack, springs sag, and friction dampers lose their grip. Signs that your 2CV needs suspension work include:
- Excessive body roll or sway when cornering.
- A bouncy, uncontrolled ride.
- Clunking or knocking noises from the front or rear.
- Uneven tire wear.
- The car sitting lower on one side.
Typical Lifespan
With regular use, original rubber bushes can last 30–50 years if the car is kept dry, but once they start perishing, replacement is recommended. Springs generally don’t wear out quickly unless the car is heavily loaded. Friction dampers may need adjustment or replacement every 20,000–30,000 miles as the friction material wears.
Choosing Replacement Suspension Parts
When shopping for 2CV suspension parts, you have options: original equipment (OE) quality, aftermarket standard, and upgraded performance parts. Here’s how to decide.
Trailing Arm Bushes
The most common replacement part. Original rubber bushes are soft and provide the classic ride but degrade over time. Polyurethane bushes are much harder and longer-lasting, but they transmit more road noise and can make the ride stiffer. For a daily driver or concours restoration, rubber is best. For a car used occasionally or for mild performance, polyurethane can be a good upgrade.
Tip: Always replace bushes in pairs (left and right) to maintain balance.
Coil Springs
New coil springs are not always necessary unless the originals are broken or sagged. Aftermarket springs are available in standard height or lowered. Lowering springs can improve handling but reduce ground clearance and comfort. For most owners, standard height springs are correct.
Tip: Check the spring free length against specifications. A sagged spring will be shorter.
Friction Dampers
These are unique to the 2CV. Replacement dampers come in standard (original type) or adjustable versions. Adjustable dampers allow you to fine-tune the ride by changing the clamping force. They are more expensive but useful for enthusiasts who want to stiffen the ride for spirited driving. Standard dampers are fine for normal use.
Tip: Friction dampers need periodic adjustment—tightening a central nut to compensate for wear. Even new units require initial adjustment after a few hundred miles.
Full Suspension Kits
Many suppliers offer complete kits that include bushes, springs, dampers, and hardware. These are convenient and often cheaper than buying individually. However, verify the quality—some kits use lower-grade materials. Reputable brands include Melun Retro Passion, EAI, and Der Franzose. Avoid unbranded or ultra-cheap kits; the ride quality will suffer.
Installation Tips
Replacing 2CV suspension parts is a DIY-friendly job if you have basic mechanical skills, but there are some important points:
- Always support the car securely on axle stands. The suspension is under tension.
- Use a spring compressor to remove and install springs safely.
- When replacing bushes, note that trailing arm removal requires disconnecting the torsion bar linkage. This can be tricky—mark the position before disassembly to maintain ride height.
- For friction dampers, adjust the central nut after installation: tighten until the arm just begins to resist movement, then back off slightly. Check the manual for torque settings.
- After any suspension work, align the front wheels. The 2CV has minimal adjustment, but tracking should be checked.
Cost Considerations
Prices for 2CV suspension parts vary widely. A single rubber bush can cost $5–10, while a set of four polyurethane bushes might be $30–50. Coil springs are around $20–40 each. Friction dampers: standard $50–80 each, adjustable $80–120. Full suspension kits (front or rear) typically $100–200. Labor costs if you have a shop do the work can add several hundred dollars.
Final Recommendation
For most 2CV owners looking to restore the original ride, stick with rubber bushes and standard friction dampers. If you plan to drive the car regularly and want to reduce maintenance, upgrade to polyurethane bushes and adjustable dampers. Always buy from a reputable classic car parts specialist. Avoid generic “universal” parts—they will not fit correctly. Inspect your trailing arms for rust or cracks, as they are structural and expensive to replace. With good quality parts and careful installation, your 2CV’s suspension will provide many more years of comfortable motoring.