Mitsubishi Mirage Asti V 1998 Rear Suspension Parts: A Complete Guide

The 1998 Mitsubishi Mirage Asti V is a compact hatchback known for its fuel efficiency and nimble handling. Over time, rear suspension components wear out, leading to poor ride quality, noise, or uneven tire wear. This guide covers the essential rear suspension parts for your 1998 Mirage Asti V, including shocks, springs, control arms, stabilizer bars, and bushings. Whether you're tackling a DIY repair or ordering parts for your mechanic, knowing the correct part numbers and compatibility will save time and money.

Key Rear Suspension Components

The rear suspension on the 1998 Mirage Asti V is a torsion beam setup. It relies on a few key parts that commonly need replacement.

Shocks (Shock Absorbers)

Shocks dampen spring oscillations and control wheel movement. Worn shocks cause bouncing, poor handling, and increased stopping distance. For the 1998 Asti V, rear shocks are part of the rear strut assembly (often called a “coilover” assembly for the rear, though technically a shock with separate spring). They are mounted between the body and the torsion beam. Common OEM options include Mitsubishi part numbers MR240242 or MR240243 (left/right). Aftermarket equivalents from brands like Monroe, KYB, or Gabriel are widely available. Always replace shocks in pairs (both rear) for balanced performance.

Coil Springs

Rear coil springs support the vehicle’s weight and absorb road impacts. Sagged or broken springs cause a low ride height and poor handling. The 1998 Asti V uses a progressive rate rear spring. OEM part number is MB618889 (or similar). Aftermarket springs may offer lowered or standard ride height. For daily driving, stick with OEM specifications. If you plan on towing or carrying heavy loads, consider heavy-duty springs. Always replace springs in pairs and check the spring isolator (upper rubber cushion) as it often cracks.

Torsion Beam (Rear Axle Beam)

The torsion beam itself rarely fails unless from rust or impact. However, the beam mounts (bushings) wear out. A worn rear axle beam bushing causes clunking noises and vague handling. The bushing is pressed into the beam and can be replaced separately. Part number for the bushing is MR240756. Alternatively, you can buy the complete torsion beam assembly with bushings installed. Inspect the beam for rust or damage.

Control Arms and Links

• Rear lateral (track) rod: This rod controls side-to-side movement of the rear axle. A worn lateral rod bushing leads to rear-end steering. Part numbers: MB915046 for the rod with bushings.
• Stabilizer bar (sway bar) links: The rear stabilizer bar reduces body roll. Links connect the bar to the torsion beam. Worn links cause clunking over bumps. Part number: MB915049 (left) and MB915050 (right). Replace in pairs.
• Stabilizer bar bushings: The bar itself mounts to the body via bushings. These harden and crack over time. Part number: MB915145 (set of 2).

Wheel Bearings and Hubs

Rear wheel bearings are integral to the hub assembly on the 1998 Asti V. If you hear a roaring or grinding noise from the rear, the bearing is likely failing. The rear hub assembly includes the bearing and is bolted to the torsion beam. Part number: MR240785 (left) and MR240786 (right). Some aftermarket hubs require pressing the bearing, but many are complete bolt-on assemblies.

Brake Components (Often Related)

While not strictly suspension, the rear brake drums and shoes interact with the suspension. When replacing rear suspension parts, inspect the brake hardware. Drums often get stuck on the hub due to rust; plan to remove them carefully.

How to Identify the Correct Parts

The 1998 Mirage Asti V shares its rear suspension with the 1997-2001 Mitsubishi Mirage hatchback (non-Cyborg) and the 1996-2001 Lancer (some markets). However, verify your vehicle identification number (VIN) and build date. Many parts catalogs list “Mirage” without the Asti designation, but the Asti V has specific parts. Check for the following:

• VIN: Look at the 8th digit. For 1998 Mirage, it's usually “A” for 1.5L or “B” for 1.8L engine. Rear suspension may vary slightly by engine due to weight.
• Rear axle beam width: Measure across mounting points. There is a narrow and wide beam depending on model year. The 1998 Asti V uses the wider beam (same as later models).
• Original equipment manufacturer (OEM) numbers: Use a Mitsubishi parts diagram. Cross-reference with aftermarket brands like Raybestos, Moog, or TRW.

Prices and Quality Considerations

• Shocks: Aftermarket shocks range from $30 to $80 each. KYB Excel-G is a popular upgrade, while Monroe Sensa-Trac is a budget-friendly option. OEM shocks are $60-$100 each.
• Springs: Aftermarket springs cost $40-$100 per pair. OEM springs are expensive ($120+ each) and often discontinued. Aftermarket is fine for stock ride quality.
• Bushings: Polyurethane bushings (like Energy Suspension) last longer but increase ride harshness. Rubber bushings (OEM-style) are quieter. Prices: $25-$60 per set.
• Complete assemblies: Some brands sell a loaded rear strut (shock+spring+boot) for $100-$200 each. This simplifies installation.

Avoid cheap no-name parts, especially for critical safety items like wheel bearings and control arms. Stick with trusted brands: KYB, Moog, AC Delco, Dorman (for hubs), and genuine Mitsubishi (if available).

Installation Tips for DIYers

• Safety first: Support the car with jack stands on the factory jack points. Never rely on a jack alone.
• Disconnect the battery if you will be near the fuel filler neck (static charge).
• Remove the rear wheels and brake drums. Spray penetrating oil on bolts and bushings the day before.
• Replace shocks easily: Unbolt top mount (inside the trunk side panel) and lower bolt on the torsion beam. Compress if needed (but rear springs usually don’t need a compressor on this model).
• Spring removal: Jack up the torsion beam to relieve spring tension. Swap springs carefully.
• Bushings: Pressing old bushings out requires a hydraulic press or bushing tool. Many local shops can press them for a small fee if you bring the beam.
• Torque specs: Use a torque wrench. For shocks: upper nut 18 ft-lbs, lower bolt 54 ft-lbs. For stabilizer links: 33 ft-lbs. For wheel bearing hub bolt: 89 ft-lbs.

If you are not experienced with suspension work, consider having a trusted mechanic install the parts. Improper torque or alignment can cause dangerous handling.

Final Recommendation

For a 1998 Mitsubishi Mirage Asti V, start by inspecting the rear shocks and bushings. Most wear is in these areas. Replace shocks with KYB Excel-G or Monroe units (both are solid choices). If the ride height is low or the car sags, replace the springs with OEM-quality aftermarket coils (e.g., Moog). For a complete overhaul, replace all rubber bushings (axle beam, lateral rod, stabilizer) with Moog or OEM rubber if you prioritize comfort. If you track the car, polyurethane bushings reduce flex but add noise. Always replace the rear wheel bearings if they are rough-sounding. Buy a complete bolt-on hub assembly from Dorman or Timken to avoid pressing. Cross-reference all parts with your VIN to ensure fitment. Parts are readily available through major auto parts stores and online suppliers. With careful selection and proper installation, your Mirage will ride and handle like new.