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AST AST 2021+ BMW M3 G80 / M4 G82 XDrive 5100 Street Series Coilovers
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AST 2021+ BMW M3 G80 / M4 G82 XDrive 5100 Street Series Coilovers

AST
ASTACU-B2114SD
astACU-B2114SD
Coilovers
1 Units In Stock - Ships Next Business Day
$ 4,060.00 $ 3,654.00
$ 3,654.00

SKU: ACU-B2114SD | UPC: astACU-B2114SD

AST 2021+ BMW M3 G80 / M4 G82 XDrive 5100 Street Series Coilovers

AST Suspension ACU-B2114SD 5100 Street Series coilovers provide 1-way rebound and ride-height adjustment for 2021-2023 BMW M3 G80 Competition xDrive and M4 G82 Competition xDrive models. Front inverted monotube dampers use coilover design while rear maintains divorced OEM-style setup with OEM top mounts for everyday road balance and grip control. Rebuildable construction ensures long-term reliability across driving conditions.

Key Features

  • Monotube Design: Large piston controls rebound damping without aeration or foaming for responsive valving and consistent performance.
  • Rebound Adjustment: 12 precise click positions adjust damper return to extension for customized road feel and handling balance.
  • Ride Height Adjustment: Threaded bodies allow easy lowering or height changes to suit track or street preferences.
  • Front Coilover Rear Divorced: Inverted monotube fronts pair with OEM-like rear setup using fixed spring rates for comfort and stability.
  • Rebuildable Dampers: Service at certified AST centers restores full performance after heavy use.

Product Notes

  • Designed to retain OEM top mounts for straightforward integration.
  • Fixed rear spring rates of 14 kgf/mm and front 12 kgf/mm from extensive testing provide balanced setup.
  • High-pressure monotube dampers perform reliably in varied conditions.

Installation Notes

  • Professional installation recommended.
  • Compatible with OEM top mounts front and rear.
  • Requires standard coilover tools. verify alignment after install.

This Part Fits

Year Make Model Submodel
2021-2023 BMW M3 Competition xDrive
2022-2023 BMW M3 Competition
2021-2023 BMW M4 Competition xDrive
2021-2023 BMW M4 Competition

Why Choose AST Suspension?

  • Proven in motorsport with decades of suspension expertise.
  • Monotube technology delivers fade-free damping under load.
  • Vehicle-specific engineering ensures exact fit and tuned response.

Frequently Asked Questions

  • Q: Does this fit BMW M3 G80 and M4 G82 xDrive models?
    A: Yes, ACU-B2114SD fits 2021-2023 BMW M3 Competition xDrive sedans and M4 Competition xDrive coupes with OEM top mount compatibility.
  • Q: What materials are used in construction?
    A: Inverted monotube steel dampers with aluminum components for durability and heat dissipation.
  • Q: What warranty or service options exist?
    A: Rebuildable at AST service centers worldwide for sustained performance. contact dealer for details.

Shipping & Handling

  • Method: UPS Ground or FedEx
  • Availability: In stock - ships same or next business day
  • Packaging: Secure double-boxed dimensions 42 x 16 x 14 inches
  • Weight: 52 lbs

Request For Information

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