Tein 02-07 Mitsubishi Lancer ES/OZ Rally Street Basis Coilovers

Street Basis Z Coilovers for the Mitsubishi Lancer Platform

The GSR66-8USS2 is a Tein Street Basis Z coilover kit built for the 2002 to 2007 Mitsubishi Lancer ES, OZ Rally, and Ralliart. Street Basis Z uses the vehicle’s OE upper mounts and a twin-tube damper system for a longer stroke and smoother ride than a mono-tube design, while still allowing ride height adjustment through the lower spring seat. The GSR66-8USS2 targets owners who want a lower, cleaner stance with a comfortable street-oriented ride.

Key Features

• Twin-tube damper system for a longer stroke, smaller repulsive force, and smooth low speed comfort
• Ride height adjustable via the lower spring seat
• Sealed shell construction for cost efficient durability without sacrificing quality
• No-Sag Spring made from cold-formed SAE9254 steel with a minimum tensile strength of 200 kgf/mm squared
• TEIN-Green powder coating using a patented two layer, one bake process for long term corrosion resistance
• ZTP coating on the ride height adjustment thread resists abrasion and rust seizure
• Uses the vehicle’s OE upper mounts, keeping installation straightforward

Fitment Table

Specifications

What’s Included

• 4 fully assembled Street Basis Z damper and spring units
• Lower spring seats for ride height adjustment
• Installation hardware
• Installation instructions

About Tein

Tein is a Japanese suspension manufacturer with decades of experience producing coilover systems for street, drift, and track use. The Street Basis Z series, including the GSR66-8USS2, focuses on giving daily drivers a lowered stance and adjustable ride height while keeping the twin-tube damper’s smooth, comfortable ride character.

Related Parts

• Tein Spring Silencer (SPR02-G1497, SPR02-H2186, SPR02-H2187) for reducing coil spring noise on this coilover
• Tein EDFC Motor Kit (EDK05-12120, EDK05-12140) for owners upgrading to electronic damping control on EDFC-compatible Tein dampers

FAQ

What is the GSR66-8USS2?

The GSR66-8USS2 is a Tein Street Basis Z coilover kit for the 2002 to 2007 Mitsubishi Lancer ES, OZ Rally, and Ralliart. It provides adjustable ride height with a twin-tube damper tuned for street comfort.

Does the GSR66-8USS2 have adjustable damping?

No, Street Basis Z uses fixed, non-adjustable damping. Owners wanting adjustable damping should look at the Street Advance Z series.

Are the OE upper mounts included?

No, Street Basis Z is designed to reuse the vehicle’s original upper mounts, which are not included in this kit.

How much can ride height be lowered?

Ride height is adjustable through the lower spring seat; exact drop range varies with vehicle weight and spring preload, so consult a Tein fitment chart or installer for a specific figure on this Lancer application.

Is the GSR66-8USS2 EDFC compatible?

Street Basis Z on applicable vehicles can support EDFC electronic damping control on certain models, though not universally across every vehicle; check specific compatibility before purchasing motor kits.

Does this kit fit the Lancer Evolution?

No, this specific part number is fitted to the ES, OZ Rally, and Ralliart Lancer trims and does not cover Evolution models.

Is professional installation recommended?

Yes, professional installation is recommended for proper alignment, corner weighting, and torque specifications after lowering the vehicle.

Install Instructions

1. Raise and safely support the vehicle, then remove the wheels.
2. Disconnect the factory strut or shock assembly from the vehicle, retaining the OE upper mount.
3. Attach the retained OE upper mount to the new Street Basis Z damper assembly.
4. Install the assembled coilover into the vehicle’s strut mounting points and torque to factory specification.
5. Set the desired ride height using the lower spring seat before final torque.
6. Reinstall the wheels, lower the vehicle, and have an alignment performed.