What is the benefit of 3-way adjustable coilovers?

3-way adjustable coilovers allow you to independently tune rebound, low-speed compression, and high-speed compression. This offers a much finer level of control over how your suspension behaves during different driving conditions, from body roll in corners to impacts from bumps.

What is the purpose of the external reservoirs?

The external reservoirs are connected to the main damper body and contain additional oil. This setup helps to keep the oil cooler under heavy use, which reduces the risk of shock fade and allows for more consistent damping performance during extended track sessions.

What is the advantage of camber-adjustable top mounts?

Camber-adjustable top mounts allow you to precisely alter the angle of your front wheels relative to the vehicle's body. This adjustment is crucial for optimizing tire contact patch during cornering, which can significantly improve front-end grip and handling performance on a track.

Specifications

Brand: AST
Part #: RAC-R2011S
UPC: RAC-R2011S

AST 17-21 Renault Megane 4 RS B9 FWD 5300 Series Coilovers w/ Springs - QDC Rear

Name: AST 17-21 Renault Megane 4 RS B9 FWD 5300 Series Coilovers w/ Springs - QDC Rear
Brand: AST
SKU: ast-ast-17-21-renault-megane-4-rs-b9-fwd-5300-series-coilovers-w-springs-qdc-rea-t14-679829
Price: 7964.16 USD
Availability: BackOrder

$7964.16

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AST 17-21 Renault Megane 4 RS B9 FWD 5300 Series Coilovers w/ Springs - QDC Rear. Fine-tune suspension for track performance.

Key Features

Fits 2017-2021 Renault Megane 4 RS B9 FWD.
3-way adjustable monotube coilovers allow separate adjustment of rebound, low-speed compression, and high-speed compression.
External reservoirs provide a wider range of adjustment and better heat dissipation.
Inverted strut design handles heavy side loads and braking forces.
Adjustable spring rates offer further tuning flexibility.
Includes camber-adjustable front top mounts and solid rear top mounts to optimize front-end geometry and grip.

This AST coilover kit is specifically designed for the 2017-2021 Renault Megane 4 RS B9 FWD model.

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About this part

Product Details

If you're pushing your Renault Megane 4 RS B9 FWD to its limits on the track, the AST 5300 Series coilovers offer a serious level of adjustability to dial in your suspension. This kit is built for dedicated track use, allowing you to precisely control how your car handles cornering, braking, and bumps.

The core of this system is the 3-way adjustable monotube design with external reservoirs. This means you can independently adjust rebound (how quickly the shock returns), low-speed compression (for gentle inputs like body roll), and high-speed compression (for sharp impacts like hitting a curb). With 12 distinct positions for each adjustment, you can fine-tune the suspension to reduce body roll, improve responsiveness, and keep your tires firmly planted for maximum traction. The inverted strut design is also a key feature, built to withstand the significant side loads and braking forces encountered during aggressive driving.

This kit also includes camber-adjustable front top mounts and solid rear top mounts. The adjustable front mounts allow you to alter your front-end geometry, which can significantly transform your front-end grip. You also have the flexibility to adjust spring rates to further customize your setup. This is a comprehensive system designed to give you the control needed for championship-level performance.