AST Suspension 5100 1-way Adjustable Inverted Coilovers - Porsche 987 Boxster - 2005- 2012

AST Suspension 5100 Street – 1-Way Adjustable Inverted Coilovers

Porsche 987 Boxter

The AST Suspension 5100 Street / Competition coilover kit is a premium suspension upgrade for the Porsche 987 Boxter are engineered to deliver improved handling, sharper response, and enhanced driver confidence without sacrificing everyday comfort. Designed for fast road and spirited driving, the 5100 Series offers a perfect balance between performance and usability.

Featuring 1-way adjustable damping, these coilovers allow precise tuning of rebound and compression together, making it easy to tailor ride quality and handling characteristics to your driving style. The inverted monotube damper design improves strength and durability under high loads, making this kit ideal for both aggressive road use and occasional track days.

Technical Specification

• Vehicle Compatibility:
  
  Porsche 987 Boxter 2005-2012

• Product Type: Coilover suspension kit

• Series: AST 5100 

• Damping Adjustment: 1-way adjustable (combined rebound & compression)

• Damper Design: Inverted monotube

• Ride Height Adjustment: Fully height adjustable

• Use Case: Fast road / spirited driving / occasional track use

• Build Quality: High-performance motorsport-derived components

• Fitment: Direct bolt-on application
  
  

• Fully rebuildable design: AST Moton suspension can be completely disassembled, serviced, and rebuilt, extending service life and allowing re-valving or refurbishment to restore like-new performance rather than replacement.
  
  

  • Upgrading: AST 5100/5200/5300 “5000-series” dampers are built modularly and can be upgraded, but what’s involved depends on which step you’re taking and your exact Porsche chassis/kit spec.
    
    

    • 5100 → 5200 or 5300: Generally possible by sending the dampers to an authorized AST rebuild/upgrade center to add the required internals and remote reservoirs (and associated hardware). This “upgrade path” is a commonly stated feature of the AST 5000-series modular design.
      
      

    • 5200 → 5300: Typically the straightforward upgrade (adding the extra compression circuit/adjustment hardware). Many dealers describe the 5200 as a good “start here, upgrade later” option for that reason.
      
      

  • For any questions and more details re upgrade options please speak to a member of the team
    
    

• Installation: Professional installation and alignment recommended

• PASM Vehicles: Vehicles fitted with Porsche Active Suspension Management (PASM) will require coding to prevent faults & error messages & correctly disable the system. 
  As an alternative option, where access to coding is not possible, a PASM cancellation kit can be purchased through us at RW Performance. If you are unsure and need any technical advice, please contact a member of the team!