How do I adjust the ride height and damping?

You can adjust the ride height by altering the coilover body position. The rebound damping is adjusted using the knob on the damper, with 12 distinct positions available to fine-tune the return stroke.

What does a monotube design mean for performance?

A monotube design uses a larger piston and separates oil and gas. This prevents foaming and aeration, leading to more consistent damping control and a more responsive feel, especially during hard driving.

Can these coilovers be rebuilt if they wear out?

Yes, these AST coilovers are rebuildable. If any issues arise, they can be serviced and repaired at a certified AST service center.

Specifications

Brand: AST
Part #: ACU-P2009S
UPC: astACU-P2009S

AST 5100 Series Shock Absorbers Coilover 88-94 Porsche 964 Carrera 2/4/RS

Name: AST 5100 Series Shock Absorbers Coilover 88-94 Porsche 964 Carrera 2/4/RS
Brand: AST
SKU: ast-ast-5100-series-shock-absorbers-coilover-88-94-porsche-964-carrera-2-4-rs-t14-341826
Price: 4112.64 USD
Availability: BackOrder

$4112.64

On Backorder

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

Fits 1989-1994 Porsche 911. AST 5100 Series 1-way adjustable coilovers with springs. Control rebound and ride height for better grip.

Key Features

1-way adjustable damping — adjust rebound and ride height to fine-tune your car's handling.
Monotube design — offers a large piston for precise rebound control and consistent performance.
Includes springs — ready to install with your factory top mounts.
Rebuildable dampers — can be serviced at a certified AST center if issues arise.
12 rebound positions — each setting offers distinct feedback for a personalized driving experience.
Direct fit — verified for 1989-1994 Porsche 911.

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About this part

Product Details

You get a set of AST 5100 Series 1-way adjustable coilovers in this AST suspension kit. These are built for the 1989-1994 Porsche 911, giving you control over your car's rebound and ride height to maximize grip. If you want a better balance for everyday driving, these are a solid option.

These coilovers use a monotube design. That means a larger piston inside controls the rebound damping. Monotube dampers don't get foamy or lose pressure, so the valving stays responsive. The springs are included and designed to work with your car's original top mounts.