AST Suspension Street 5100 Series Non-Inverted coilovers for the BMW Z4

AST Suspension

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SKU: ACS-B1101SD

AST Suspension Street 5100 Series Non-Inverted Coilover Kit for 2006 BMW Z4 Coupe RWD (E86)

$3,546.00

MSRP $3,940.00 You save $394.00

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Fitment Notes

All fitment information on our website is provided by the manufacturer. It is the customer's responsibility to thoroughly read the product description and confirm fitment before placing an order and proceeding with installation.

Unless specified otherwise, all suspension products are designed for 2WD vehicles only. Any notes or descriptions related to electronic damping systems (EDC, DDS, etc.) apply strictly to vehicle fitment. Aftermarket coilovers are not compatible with OEM electronic damping control systems unless explicitly stated.

*Product images may not represent the actual SKU.

Handling Time

All handling times are estimates and may change at any time.

  • In Stock: 1 business day
  • Out of Stock: 4-6 weeks
  • Custom-Builds: 4-6 weeks
  • Special Order: 4-6 weeks
30-Day Returns

Not quite right? No problem — we offer hassle-free 30-day returns on eligible items. A few exclusions apply.

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2-Year Manufacturer Warranty

AST Suspension guarantees the Customer that when used normally and correctly, the Products are free from defects with regard to their material or workmanship. In the event that the Product is nevertheless defect, the Customer who is a Consumer may invoke the guarantee scheme which he/it is entitled to under the Dutch Consumer Sales Act [wet inzake consumentenkoop]. For other Customers, a warranty period of two years will apply. In no event shall any warranty apply for Products used for abnormal uses such as motor sport and/or auto sport and all its various disciplines.

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Product Details

These AST Suspension Street 5100 Series Non-Inverted coilovers fit the 2006 BMW Z4 Coupe RWD.

Looking for the perfect everyday road balance? The 5100 Street Non-Inverted Suspension to your 2006 BMW Z4 Coupe RWD (E86) delivers comfort and control in one refined package. Experience a high-quality monotube coilover system, 1-way adjustable for rebound and ride height. The front coilover design ensures precise handling, while the OEM-style rear setup maintains daily comfort. Built with fixed rear spring rates, OEM-compatible top mounts, and rebuildable dampers, this system offers lasting performance. Engineered and made in the Netherlands, the 5100 STREET suspension maximizes grip and stability, giving your car the perfect balance between comfort and control on every drive.

Standard Features

  • 1-Way Rebound Adjustable – 12-position rebound adjustment lets you fine-tune damping for different driving conditions.
  • Ride Height Adjustable – Adjust vehicle ride height while maintaining maximum damper stroke for consistent suspension performance.
  • High-Performance Monotube Design – High-pressure gas and a floating piston help reduce cavitation while improving grip, control, and driver feedback.
  • OEM Top Mount Compatible – Designed to work with factory top mounts, making it a practical upgrade for street-focused applications.
  • Rebuildable & Spring Included – Built for long-term performance and serviceability, with vehicle-specific springs included in the kit.
Specifications
Part Number ACS-B1101SD
Part Name 5100 Series Coilovers
Vehicle 2006 BMW Z4 Coupe RWD
Chassis Code E86
Ride-Height Adjustable Yes
Damping Adjustment 1-Way
Kit Includes 4 Shock Absorbers
Kit Includes Springs
Quantity Full Set (Front & Rear)
Notes -

Vehicle fitment

This product fits the vehicles listed below.

YearMakeModelDrivetrainNotes
2006BMWZ4RWD

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