Enhance handling precision, suspension control, and chassis balance on your Nissan 240SX S13 with the Megan Racing Spec-RS Series Coilover Suspension System. Engineered for drift, track, and aggressive street driving, the Spec-RS platform delivers extensive adjustability, consistent damping performance, and durable construction specifically tuned for the S13 chassis.

This advanced coilover system features 32 levels of independent compression and rebound adjustment, allowing drivers to precisely tune suspension behavior for varying surfaces and driving styles. Compression damping is adjusted via external reservoirs to increase oil capacity and thermal stability, while rebound adjustment is conveniently located at the top of each damper for quick access.

Ride height is adjusted independently of spring preload using CNC-machined locking spring perches and adjustable shock body length. This design preserves full suspension stroke at all ride heights and allows accurate corner balancing and aggressive alignment setups without sacrificing damper travel.

For strut-type suspension applications, the Spec-RS system includes pillow-ball upper mounts with integrated front camber plates, enabling precise camber adjustment to improve steering response, predictability, and tire wear. Constructed from high-strength steel with aluminum rear brackets and paired with SAE-9254 cold-wound springs tested beyond 500,000 compression cycles, this suspension system is built for durability, consistency, and competitive performance use.

Key Features:

• Independent Compression & Rebound Adjustment: 32-step damping control with separate tuning for maximum precision.
• External Reservoirs: Increased oil capacity with independent compression adjustment.
• Top-Mounted Rebound Adjustment: Quick and accessible tuning without disassembly.
• Independent Ride Height Adjustment: Shock length adjusts separately from spring preload to retain full stroke.
• Pillow-Ball Upper Mounts: Reduces suspension deflection and sharpens steering response.
• Front Camber Plates: Enables aggressive alignment tuning for drift and track use.
• Dual-Cylinder Damper Design: Improves damping consistency and control.
• High-Strength Construction: Steel front brackets with aluminum rear brackets for strength and reduced weight.
• Complete Hardware Kit Included: Ready for direct installation.

Spring Rates:

• Front: 7 kg/mm
• Rear: 5 kg/mm

Damper Adjustment Guidance:

• 1–8: Track use
• 9–16: Mountain / aggressive driving
• 17–32: Street driving

Fitment:

• Nissan 240SX S13 (1989–1994)

Important Notes:

• This coilover system is designed for aggressive lowering and cannot be adjusted to stock ride height.
• Intended for performance-oriented setups requiring a lowered stance.

Part Number:

• MR-CDK-NS13-RS