AST Suspension RAC-H2101S Series Motorsport Coilovers - 5300 3-Way

The AST Suspension 5300 Series RAC-H2101S represents the pinnacle of motorsport suspension technology, engineered for dedicated track enthusiasts and competitive racers who demand championship-level performance. This professional-grade 3-way adjustable coilover system delivers unmatched control and adjustability through independent rebound and separate low-speed and high-speed compression damping with remote reservoirs.

Advanced 3-Way Adjustability:

• 12-position independent rebound adjustment controls damper extension for optimal road balance and feedback
• 14-position low-speed compression adjustment manages gentle, gradual compression forces for improved body control during braking and cornering
• 12-position high-speed compression adjustment addresses rapid, forceful impacts to smooth out track undulations
• All adjusters work completely independently for precise suspension tuning

Race-Proven Construction:

• Monotube coilover design with 44.5mm diameter inverted struts engineered to handle heavy side loads and braking forces
• Remote reservoirs provide additional suspension travel, superior heat dissipation, and increased oil/nitrogen gas capacity
• Aluminum cylinder construction with threaded body and factory mounting style
• Low-friction seals on all dampers for consistent performance
• Spherical lower eye shock mounts and spherical upper shock mount assemblies
• Synthetic hydraulic fluid for reliable operation

Performance Features:

• Ride height adjustable with approximate lowering range of 25-60mm
• Adjustable spring rates for custom tuning capabilities
• Gas pressurized with floating piston separating gas and oil
• Includes camber-adjustable front top mounts and solid rear top mounts where applicable
• Fully serviceable, rebuildable, and revalvable for specific characteristics

What's Included:

• Complete front and rear monotube coilover assemblies with remote reservoirs
• AST top mounts/camber plates (high quality, noise-free)
• Matched spring set (custom spring rates available)

Tested on world-renowned circuits including the Nürburgring, Zandvoort, Imola, Laguna Seca, and Macau, the AST 5300 Series delivers easy setup, exceptional reliability, and low maintenance requirements thanks to high-grade materials and precision engineering. Optional upgrades include DLC-coated inverted shafts, DDP (double digressive) pistons, drop links, and quick disconnects for ultimate performance customization.