How do I adjust the ride height and rebound on these coilovers?

Ride height is adjusted by threading the lower spring perch up or down on the shock body. Rebound damping is adjusted using the knob at the top of the front damper and the rear shaft, offering 12 distinct positions.

Do I need to buy new top mounts for these coilovers?

No, these AST 5100 Series coilovers are designed to work with your vehicle's original equipment (OEM) top mounts, simplifying installation.

What does a monotube damper design offer over a twin-tube design?

Monotube dampers use a larger piston and separate oil and gas chambers, which prevents aeration and foaming. This results in more consistent and responsive damping control, especially under hard use.

Specifications

Brand: AST
Part #: RUV-M1206S/1
UPC: astRUV-M1206S/1

AST 89-05 Mazda MX-5 NA/NB 5100 Series Coilovers

Name: AST 89-05 Mazda MX-5 NA/NB 5100 Series Coilovers
Brand: AST
SKU: ast-ast-89-05-mazda-mx-5-na-nb-5100-series-coilovers-t14-548808
Price: 3296.64 USD
Availability: BackOrder

$3296.64

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 1990-1997 Mazda Miata. AST 5100 Series coilovers offer adjustable ride height and rebound damping for improved road balance.

Key Features

Direct fit — verified for 1990-1997 Mazda Miata
Monotube dampers — offer a large piston for precise rebound control and prevent aeration or foaming for more responsive valving.
Adjustable ride height and rebound — fine-tune your suspension setup with 12 distinct rebound positions.
Front coilover, rear divorced setup — maintains a comfortable configuration similar to OEM while improving performance.
Includes springs — designed to work with your factory top mounts for easier installation.
Rebuildable design — allows for servicing at a certified AST service center if issues arise.

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About this part

Product Details

You get a set of AST 5100 Series coilovers in this kit. These are designed for the 1990-1997 Mazda Miata, offering adjustable ride height and rebound damping to get a better road balance for daily driving. They use a non-inverted monotube design for responsive damping.

The front dampers are a coilover setup, while the rear maintains a divorced setup like the factory suspension. This setup helps achieve a comfortable ride while still controlling grip. The kit includes springs and is made to work with your OEM top mounts. Rebound can be adjusted across 12 positions to fine-tune the feel.