Flatout GR40 Coilovers for 1990-2005 Mazda MX-5 Miata (NA & NB) | Rally & Gravel Suspension

The Flatout GR40 Coilovers for the 1990-2005 Mazda MX-5 Miata transform the lightweight roadster into a capable gravel, rallycross, and stage rally machine. Designed with 0-2 inches of adjustable lift, the GR40 provides the additional suspension travel and ground clearance needed for rough roads while preserving the Miata's legendary balance and responsiveness.

Purpose-built for competition, the GR40 features inverted front dampers for maximum rigidity and external reservoir rear shocks on select applications to improve cooling and consistency during extended high-speed driving. Combined with Flatout's proprietary rally valving and bypass piston technology, the suspension absorbs washboard roads, ruts, and jumps while maintaining exceptional chassis control on pavement and loose surfaces alike.

Key Features of the GR40 Miata Rally Suspension

• 0-2" adjustable ride height → Increase ground clearance for gravel roads, rallycross, and off-pavement adventures.
• Inverted front dampers → Increased bending strength and improved steering precision during aggressive driving.
• External reservoir rear shocks (application dependent) → Greater oil volume for improved cooling and fade resistance.
• Proprietary rally valving with bypass pistons → Comfortable over small bumps while remaining composed during high-speed impacts.
• LPS 2.5" ID linear springs → Carefully selected spring rates that complement the Miata's lightweight chassis while maintaining traction over rough terrain.
• OEM-style upper mounts → Quiet operation with minimal additional NVH for daily driving and transit stages.
• Electroplated shock bodies → Outstanding corrosion resistance for year-round driving in harsh environments.
• Fully rebuildable construction → Designed for years of service with rebuildable and revalvable components.
• 20-position rebound adjustment → Fine tune handling for tarmac, gravel, rallycross, or daily driving.
• Backed by a 3-year warranty → Confidence for both enthusiasts and competitors.

Built for Rally Miata Projects

The NA and NB Miata have become increasingly popular platforms for rallycross, gravel road builds, overland-inspired projects, and grassroots stage rally. Their lightweight chassis, rear-wheel drive layout, and exceptional steering feedback make them incredibly rewarding to drive, but the factory suspension limits travel and ground clearance.

The Flatout GR40 solves those limitations by increasing usable suspension travel, improving impact absorption, and providing the durability needed for repeated abuse. Whether you're attacking rallycross courses, exploring forest service roads, or building your own Safari-style Miata, the GR40 delivers the control and reliability needed to drive with confidence.

Why Miata Owners Choose the GR40

• Designed specifically for lifted NA and NB Miata rally builds.
• Improves suspension travel while maintaining excellent chassis balance.
• Handles gravel roads, rough pavement, rallycross, and stage rally with confidence.
• Comfortable enough for street driving while delivering true motorsport capability.
• Fully rebuildable and customizable for long-term competition use.
• Developed using real-world rally and off-road experience.

Driver Reviews

⭐️⭐️⭐️⭐️⭐️ "I built my NB Miata into a gravel toy, and the GR40 completely transformed the car. It absorbs rough roads without sacrificing the sharp handling that makes a Miata so much fun."

⭐️⭐️⭐️⭐️⭐️ "After several rallycross events and countless miles on forest roads, the suspension still feels tight and composed. The added ground clearance makes the car much more capable than I ever imagined."

The Flatout GR40 Coilovers for the 1990-2005 Mazda MX-5 Miata deliver the strength, suspension travel, and adjustability required to build a truly capable rally Miata. Whether you're competing in rallycross, tackling gravel backroads, or creating the ultimate Safari Miata, the GR40 combines race-proven durability with the precise handling that has made the Miata one of the world's most beloved sports cars.