BC Racing ER Series coilovers MX-5 NA/NB/NBFL

The BC Racing ER Series coilovers are the premium solution for MX-5 drivers who demand maximum performance and precise adjustability for both street and track use. Featuring external reservoirs and independent compression and rebound adjustment, the ER Series offers the highest level of control and customization.

Features & Benefits

• Digressive piston & damping curve: Higher low-speed damping for body control, reduced high-speed damping for kerb absorption and balance
• External reservoirs: Separate compression and rebound adjustment for advanced tuning
• 30 clicks of compression adjustment via external reservoirs
• 30 clicks of rebound adjustment from the top of the damper
• Spring rates: 8 kg/mm (front) & 6 kg/mm (rear) – ideal for street and track
• Ride height adjustment independent of spring preload to retain full damper travel
• Monotube damper design for consistent performance
• Camber adjustable top mounts (depending on model)
• Pillowball top mounts for precise steering feedback
• Bearing-mounted upper spring platform for smooth operation
• Dust boots to protect damper seals
• Tapered bottom mount locking collar prevents loosening under load
• Custom spring rates available
• All spare parts available with short lead times
• 1-year manufacturer warranty

Performance Advantages

By separating compression and rebound adjustment, the ER Series allows you to fine-tune the car’s dynamics:

• Braking: Compression damping helps manage weight transfer to the front tires for maximum grip and trail braking stability.
• Corner entry: Rebound damping prevents the suspension from snapping back too quickly, reducing understeer and keeping the front end loaded.
• Corner exit: Balanced damping lets you get back on the throttle sooner, maximizing exit speed and straight-line performance.

Compatibility

• Mazda MX-5 NA (1989–1997)
• Mazda MX-5 NB/NBFL (1998–2005)

Conclusion: The BC Racing ER Series coilovers for the MX-5 NA/NB/NBFL are the ultimate choice for drivers seeking a high-quality, fully adjustable suspension system. Combining everyday usability with uncompromising track performance, the ER Series delivers precise handling, maximum control, and a professional driving experience.