{"product_id":"bc-racing-er-series-coilover-kit-mazda-mx-5-mk1-mk2-na-nb-1989-2005-n-04-er","title":"BC Racing ER Series Coilover Kit – Mazda MX-5 Mk1\/Mk2 NA\/NB 1989–2005 • N-04-ER","description":"\u003cdiv\u003e\n\u003cp style=\"margin: 0 0 8px; font-size: calc(14px + 0.1vw);\"\u003e\u003cstrong\u003eBC Racing N-04-ER ER Series Coilover Kit\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin: 0 0 8px; font-size: calc(14px + 0.1vw);\"\u003eBC Racing ER Series coilover kit for \u003cstrong\u003eMazda MX-5 Mk1 NA and Mk2 \/ Mk2.5 NB \/ NB-FL 1989–2005\u003c\/strong\u003e applications listed in the compatibility table.\u003c\/p\u003e\n\n\u003cp style=\"margin: 0 0 8px; font-size: calc(14px + 0.1vw);\"\u003eThe ER Series is BC Racing's two-way adjustable external-reservoir suspension system, designed for drivers who want significantly greater control over damper setup for demanding fast-road, track-day and motorsport use.\u003c\/p\u003e\n\n\u003cp style=\"margin: 0 0 8px;\"\u003eSeparate compression and rebound adjustment allows each aspect of the damper response to be tuned independently. Compression adjustment is provided through the external reservoirs, while rebound adjustment is controlled separately at the damper, with 30 adjustment positions available for each.\u003c\/p\u003e\n\n\u003cp style=\"margin: 0 0 8px;\"\u003eThe external reservoirs increase the available damper oil capacity, helping reduce peak oil temperatures and maintain more consistent damping characteristics during sustained hard use. Ride height can also be adjusted independently from spring preload, giving greater flexibility when configuring the suspension.\u003c\/p\u003e\n\n\u003cul style=\"margin: 0 0 8px; padding-left: 18px;\"\u003e\n\u003cli\u003eProduct type: Complete coilover suspension kit\u003c\/li\u003e\n\u003cli\u003eSeries: ER Series\u003c\/li\u003e\n\u003cli\u003ePrimary use: Fast road, track day and motorsport\u003c\/li\u003e\n\u003cli\u003eLocation \/ system: Front and rear suspension\u003c\/li\u003e\n\u003cli\u003eBrand: BC Racing\u003c\/li\u003e\n\u003cli\u003eProduct reference \/ part number: N-04-ER\u003c\/li\u003e\n\u003cli\u003eVehicle application: Mazda MX-5 \/ Miata NA \u0026amp; NB 1989–2005\u003c\/li\u003e\n\u003cli\u003eDamper design: Monotube with external reservoirs\u003c\/li\u003e\n\u003cli\u003eFront spring rate: 8 kg\/mm\u003c\/li\u003e\n\u003cli\u003eRear spring rate: 6 kg\/mm\u003c\/li\u003e\n\u003cli\u003eDamping adjustment: Two-way independent compression and rebound adjustment\u003c\/li\u003e\n\u003cli\u003eCompression adjustment: 30 clicks via the external reservoirs\u003c\/li\u003e\n\u003cli\u003eRebound adjustment: 30 clicks from the damper adjuster\u003c\/li\u003e\n\u003cli\u003eRide height adjustment: Adjustable independently from spring preload\u003c\/li\u003e\n\u003cli\u003eTop mount note: Pillowball top mounts front and rear\u003c\/li\u003e\n\u003cli\u003eQuantity supplied: Complete four-corner coilover suspension kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"margin: 0 0 8px;\"\u003e\u003cstrong\u003eFitment advice:\u003c\/strong\u003e Designed for Mazda MX-5 \/ Miata NA and NB platform applications from 1989–2005, including applicable 1.6, 1.8, 1.8 VVT and turbocharged models listed in the compatibility table. For imported, modified or previously repaired cars, matching the vehicle generation, chassis code, suspension layout and kit reference is recommended before ordering.\u003c\/p\u003e\n\n\u003cp style=\"margin: 0 0 8px;\"\u003e\u003cstrong\u003eOther items to consider:\u003c\/strong\u003e When fitting or setting up this product, you may also want to consider purchasing replacement suspension fasteners, anti-roll bar links, suspension bushes and any worn suspension arms or ball joints. A professional four-wheel alignment and suspension setup should be carried out once the final ride height has been established.\u003c\/p\u003e\n\n\u003cp style=\"margin: 0 0 8px;\"\u003e\u003cstrong\u003eUseful tools \/ consumables:\u003c\/strong\u003e Suitable vehicle lifting equipment and axle stands, socket and spanner set, torque wrench, penetrating fluid, anti-seize compound and the appropriate coilover adjustment tools. Professional wheel-alignment equipment is required for final geometry setup.\u003c\/p\u003e\n\n\u003cp style=\"margin: 0 0 8px;\"\u003e\u003cstrong\u003eDifficulty guide:\u003c\/strong\u003e DIY Difficulty: Advanced. Installation involves complete front and rear suspension replacement together with positioning of the external reservoirs, ride-height adjustment and subsequent geometry setup. Professional installation is recommended for this type of suspension system.\u003c\/p\u003e\n\n\u003cp style=\"margin: 0 0 8px;\"\u003e\u003cstrong\u003eWhy BC Racing?\u003c\/strong\u003e BC Racing ER Series suspension combines external reservoirs with independently adjustable compression and rebound damping, providing considerably greater setup control than a conventional single-adjustable coilover. Increased damper oil capacity, monotube construction, independent ride-height adjustment and extensive damping adjustment make the ER Series particularly suitable for demanding fast-road, track-day and motorsport applications.\u003c\/p\u003e\n\n\u003cp style=\"margin: 0 0 8px;\"\u003e\u003cstrong\u003eWhat’s in the box:\u003c\/strong\u003e Complete four-corner BC Racing ER Series coilover suspension kit with front and rear external-reservoir dampers, springs, pillowball upper mounts, adjustment hardware and associated components supplied with the N-04-ER kit.\u003c\/p\u003e\n\n\u003cp style=\"margin: 0 0 8px;\"\u003e\u003cstrong\u003eInstallation \/ setup notes:\u003c\/strong\u003e The external reservoirs must be positioned and secured correctly during installation. Ride height, spring preload, compression damping and rebound damping should be set methodically. Once the required ride height has been established, all mounting hardware should be tightened to the appropriate specification and a full four-wheel geometry alignment carried out before final suspension tuning. BC Racing notes that supplied spring rates may differ where a kit has been ordered with a custom specification.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":57979858289022,"sku":null,"price":1798.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/8274\/9408\/files\/ERSeries.jpg?v=1788679919","url":"https:\/\/www.mazspec.co.uk\/products\/bc-racing-er-series-coilover-kit-mazda-mx-5-mk1-mk2-na-nb-1989-2005-n-04-er","provider":"MazSpec","version":"1.0","type":"link"}