AST Suspension 5300 3-way Adjustable Inverted Coilovers - Porsche 987 Boxster/Cayman 2005 - 2012

AST Suspension 5300 3-Way Adjustable Inverted Coilovers

Porsche 987 Boxter/Cayman  2005 - 2012

The AST Suspension 5300 Series 3-Way Adjustable Inverted Coilover Kit is a professional-grade suspension upgrade developed for Porsche 987 Boxter and Cayman models that demand maximum performance, control, and adjustability. Designed for serious track use while remaining suitable for fast road setups, the 5300 system delivers exceptional grip, stability, and driver confidence.

Featuring an inverted monotube damper design, the 5300 kit offers increased rigidity and reduced unsprung mass, improving steering response and consistency under high loads. Independent 3-way adjustment allows precise tuning of low-speed compression, high-speed compression, and rebound—giving experienced drivers and suspension specialists full control over chassis behaviour.

This is a no-compromise solution for drivers seeking race-proven suspension technology with the flexibility to fine-tune their setup for different circuits, conditions, and driving styles.

Technical Description

• Vehicle Compatibility: 2016 - Present
  Porsche 987 Boxter
  Porsche 987 Cayman
  

• Suspension Type: Coilover kit

• Damper Design: Inverted monotube

•  Top Mounts: This set includes external reservoirs and, where applicable, camber-adjustable front Top Mounts and solid rear Top Mounts.
  
  

• Adjustment:

  • Independent rebound adjustment

  • Independent low-speed compression adjustment

  • Independent high-speed compression adjustment

• Series: AST 5300

• Application: Track-focused / high-performance road use

• Ride Height: Fully adjustable

• Construction: Motorsport-grade components for durability and consistency

• Setup: Custom spring rates available on request

• 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 and 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!