AST 17-21 Renault Megane 4 RS B9 FWD 5100 Street Coilovers w/ Springs (ACU-R2011S)

The AST 17-21 Renault Megane 4 RS B9 FWD 5100 Street Coilovers w/ Springs is a coilover kit from AST Suspension. Part ACU-R2011S.

Looking for the perfect road balance for everyday driving? The 1-Way Street Suspension delivers comfort, control, and confidence in every corner. This monotube coilover system is 1-way adjustable for rebound and ride height, allowing you to fine-tune your setup for maximum grip and stability. It comes with vehicle-specific spring rates, OEM-compatible top mounts, and rebuildable dampers for long-lasting performance. Proudly made in the Netherlands, the 1-Way STREET Suspension offers the ideal blend of everyday comfort and precise handling - engineered for drivers who want performance without compromise.

Features and benefits

Monotube dampers offer a large piston to control the adjustability of rebound damping. These dampers can adjust in ride height and rebound (return to extension). Front and rear dampers utilize a coilover design.

Details

• Brand: AST Suspension
• Series: AST 5100
• Part number: ACU-R2011S
• Manufacturer description: AST 17-21 Renault Megane 4 RS B9 FWD 5100 Street Coilovers w/ Springs
• Kit includes (partial list from the manufacturer data): Springs

Fitment

• Vehicle: Renault Megane RS
• Suspension packages vary within a model line (electronic dampers, engine, body style and drive type). Compare the application above with your car before ordering. Not sure? Ask us and we will check it against your VIN.

Before you order

Coilover kits are built for a specific chassis, drivetrain (RWD / AWD) and model range. Compare the manufacturer description above with your car. Cars with factory electronic dampers (for example EDC, PASM or adaptive M suspension) may need a cancellation kit, which is not included unless listed. An alignment is needed after installation. Questions? Ask us.

About AST Suspension

AST (Advanced Suspension Technology) is a Dutch suspension brand. It develops monotube coilover systems and lowering springs for road and track cars, from 1-way street setups to 3-way motorsport dampers, and its coilovers are engineered and made in the Netherlands.

Shipping & returns

• Orders are processed within 1–3 business days; standard delivery is 3–7 business days within the United States.
• Special order: this item is ordered from the manufacturer after you place your order. It is not shipped from stock and can take several weeks. We email you the expected ship date after you order.
• We currently ship within the U.S. only. See our Shipping Policy.
• 30-day returns on unused parts in original packaging — see our Return Policy.

Installation at Team ANBD

Team ANBD is a performance shop in Andover, New Jersey. An alignment is recommended after any ride-height change, and we can align or corner-balance the car, and prep track cars. Book an appointment or ask us about installation and fitment before you order.