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AST Suspension RAC-B1501S Series Adjustable Motorsport Coilovers - 5300 3-Way

(1984-1985, 1991-1992 BMW 318i; 1987-1991 BMW 325is; 1984-1987 BMW 325e; 1991-1992 BMW 318is; 1986-1988 BMW 325)

Manufacturer

Part Number

RAC-B1501S
Sale Price

$7,286.74

Estimated ship date Friday, November 20

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Fitment guaranteed

Product Details

The AST Suspension 5300 Series represents the pinnacle of motorsport suspension technology, engineered for dedicated track enthusiasts and professional race teams. This competition-grade coilover system features advanced 3-way adjustability that provides independent control over rebound, low-speed compression, and high-speed compression damping characteristics.

Key Features:

  • Monotube coilover design with inverted strut construction for superior strength and durability
  • 12-position rebound adjustment on the strut for precise control of damper extension
  • 12-position high-speed compression adjustment via external reservoir
  • 14-position low-speed compression adjustment via external reservoir
  • Remote reservoirs provide enhanced heat dissipation, additional oil capacity, and extended travel
  • Adjustable ride height and spring rates for complete suspension customization
  • Camber-adjustable front top mounts and solid rear top mounts included where applicable
  • 44.5mm inverted shaft design handles extreme side loads and braking forces
  • Aluminum cylinder with threaded body and factory-style mounting
  • Low-friction seals and synthetic hydraulic fluid for consistent performance
  • Spherical bearing lower eye mounts and upper shock mount assemblies

The 5300 Series delivers championship-winning performance through decades of technical expertise in suspension development. Each damper operates independently, allowing precise fine-tuning to match your driving style and track conditions. The monotube design ensures consistent damping characteristics even under extreme racing conditions, while the inverted strut configuration minimizes geometry changes during aggressive cornering and braking maneuvers.

Products specifications

Fits

1984-1985, 1991-1992 BMW 318i; 1987-1991 BMW 325is; 1984-1987 BMW 325e; 1991-1992 BMW 318is; 1986-1988 BMW 325

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