BC Racing ER Series Coilovers For Mazda MX-5 ND

Original price was: £1,799.00.Current price is: £1,709.05. inc. VAT


Available to order — ships in under 2 working days

BC Racing’s premium flagship coilovers are the external reservoir ER Series with separate compression and rebound damping adjustment. The ER Series coilovers are designed for dual duty vehicles that require the best balance of performance and comfort. BC Racing have engineered the ER series to have the best overall compromise of spring rate, ride height range, top mount design and damping rate to suit cars that are daily driven and see occasional track or competition use.

The ER series are exceptionally capable of dealing with fast road and track work but also retains a high degree ride civility. Long journeys to and from the track are no longer tiring thanks to the work put in by BC Racing. The external reservoirs increase the oil capacity of the damper unit which helps to reduce peak oil temperatures, decreasing variations in damping rates due to oil viscosity changes. The reduction in damping rate variations improves handling and ultimate on road and track performance.

The pillowball upper mount is made from aluminium alloy, anodised and then bead blasted to give a high-quality, durable finish. Made in Japan, the pillowball eliminates any flex or play associated with the standard rubber mounts so improving response and handling.


Spring Perch Dual Perch
Tube Design Monotube
Fixed/Adjustable Dampening Adjustable (Rebound & Compression adjust separately)
Dampening?Design Linear
Top Mount Design Pillowball
Spring Rate 5/2.5kg/mm
Other parts required? No

Unsure what these mean? Click here to read our Coilover tech guide?


Additional information

Shipping Weight 18 kg
Shipping Dimensions 76 × 46 × 23 cm

BC Racing


Mk4 (15-24)

Warranty information

Warranties cover defects in materials and workmanship only. Warranty is for replacement of a similar product, repair of the original product or refund of the purchase value only and excludes all labour and incurred charges including towing, fitting, inconvenience, and purchases of other manufacturer's products. The warranty is good for the period stated in the additional info tab from the date of purchase. Mileage warranties are for road use only and proof of mileage is required. Products must be installed by an independent experienced professional mechanic and the suspected defect must be present at the outset. The warranty does not cover damage caused by incorrect installation, failure to comply with the maintenance requirements of the vehicle, processing or otherwise changing the product, ordinary wear and tear, or any other external influences. Warranties are invalid if the product is used for racing, rallying, drifting, track days or any other form of motorsport or competition. Please refer to the manufacturer's own warranty documentation for more information.

Making a warranty claim

Proof of purchase receipt showing the date of purchase, proof of mileage at installation, proof of current mileage and invoice of the work undertaken by an independent experienced professional mechanic must be supplied along with the returned products for a warranty claim to be considered. If your vehicle needs to be used whilst your warranty claim is considered replacement parts from the same manufacturer should be purchased through BOFI Racing. In the event of a successful warranty claim, we will refund the card that was originally used to purchase the replacement parts, in full or in part depending on the nature of the claim. BOFI Racing reserves the right to make full or partial compensation at its sole discretion depending on the condition and mileage use of the returned suspect parts. For example, if you have used the part for several thousand miles before a defect is noticed, only partial compensation may be offered.

Make Model Year
Mazda MX-5 IV (ND) 2015 - 2023