MX5 05-15 BC Racing Screw Set ER

Get the most out of your Mazda MX-5 NC - NCFL (2005–2015) with the BC Racing ER Series coilover kit. Developed for the true enthusiast who wants to fine-tune their suspension to perfection. This two-way adjustable coilover kit is designed for intensive track use and offers a combination of precision, cooling, and adjustability.

Thanks to the large external reservoirs (front and rear) with a twin-piston monotube design, the ER Series offers ultimate control over both compression and rebound. The increased oil volume ensures faster heat dissipation during prolonged use.
Ideal for track days and competitive use.

Whether you’re preparing your Mazda MX-5 for the next race or simply want maximum feedback on the track, the BC Racing ER Series lets you fine-tune your suspension to match your driving style and conditions.

Key features:

• 2-way adjustable
  Separately adjustable compression and rebound damping (30 clicks) 

• External reservoirs 
  Ensure optimal oil cooling and consistent performance

• Mono-tube twin-piston design
  Maximum responsiveness and precise damping

• Adjustable ride height via shock absorber body (not via spring)

• Equipped with pillow-ball top mounts (with camber adjustment where possible)

• Supplied complete with: 4 bolt sets including dampers, springs, top mounts, adjustment tools, and warranty card

Please note: This kit is intended for track use. The stiffer suspension may cause road noise that could be perceived as uncomfortable during street use.

V1 Series: Street Use - Entry Level (Phase 1)
BR Series: Street & Track Use - Pro (Phase 2)
DS Series: Track Use - Degressive (Phase 2.1)
RM Series: Track Use - Inverted Shocks (Phase 3)
ER Series: Track Use – 2-Way Adjustable (Phase 4)
HM Series: Track Use - 2-Way Adjustable - Inverted Shocks (Phase 4.1)
ZR Series: Track Use - 3-Way Adjustable (Phase 5)

This spring set is not TÜV- or GOCA-certified.