Description
BC Racing BR coilover kit Mazda MX-5 NC (06-15) 6/4 kg/mm
The BC Racing BR coilover kit MX-5 NC (part number N-11-BR-RS) is a coilover kit adjustable in height and damping, also simply called a coilover, for the Mazda MX-5 NC, model years 2006 to 2015. The spring rate is 6 kg/mm front and 4 kg/mm rear.
With the BR series, BC Racing supplies an all-round coilover kit for the third-generation MX-5. The kit is intended for daily use with the occasional track day or autocross, with monotube dampers and a linear piston that responds predictably.
On the original suspension an NC leans noticeably in fast corners. With this kit it sits flatter, you lower it as you wish and you set the damping in 30 clicks to suit your driving style. You adjust the ride height independently of the spring preload.
Key benefits
- Ride height independent of spring preload: lower the car via the damper body, the spring keeps its preload.
- 30-click damping adjustment: compression and rebound together, per damper.
- Linear piston: predictable damping behaviour that follows the speed of the wheel movement.
- Spring rate 6/4 kg/mm: the BR kit that BC Racing UK recommends for the MX-5 NC.
- Patented concave lower lock ring: keeps the set height in place.
- Rubber top mounts at the front: rubber or the original mounting at the rear.
- Usable every day: with room for a track day or autocross.
- Rebuildable: the dampers can be rebuilt.
Suitable for
Mazda MX-5 NC, model years 2006 to 2015. If you have an MX-5 NC Roadster Coupe and are in doubt, contact us and we will check the fitment using your chassis number.
- A tighter MX-5 NC for daily use
- The occasional track day or autocross
- Choosing the ride height yourself and tuning the damping to your driving style
Technical specifications
- Manufacturer: BC Racing
- Part number: N-11-BR-RS
- Series: BR, all-round for road and track
- Spring rate front/rear: 6/4 kg/mm
- Damper design: monotube with linear piston
- Damping: 30 clicks, compression and rebound simultaneously
- Ride height: adjustable via the damper body, independent of the spring preload
- Top mounts: rubber top mounts front, rubber or the original mounting rear
- Contents: dampers and springs front and rear, lower mounts, top mounts where applicable, adjustment spanners and warranty card with serial number
- Warranty: 1 year on manufacturing defects
Fitting and delivery
The kit replaces the NC’s original dampers and springs front and rear and is made specifically for this model. We recommend having it fitted by an experienced mechanic and having the wheel alignment checked after lowering. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If BC Racing is temporarily out of stock, you can still order the kit; we will keep you informed about the delivery date.
For the Mazda MX-5 NC, BC Racing supplies the BR coilover kit N-11-BR-RS with a spring rate of 6 kg/mm front and 4 kg/mm rear.
Why choose this BR coilover kit MX-5 NC?
The NC is a great roadster to drive every day, and it should stay that way with a coilover kit. This BR kit makes the car tighter and more direct, while it remains perfectly usable away from the track. You choose the ride height yourself and tune the damping in 30 steps.
BC Racing coilover kits for the Mazda MX-5 NC
Overview of the BC Racing series for the Mazda MX-5 NC supplied by Race4DriftParts, with the BC Racing part number. Spring rates in kg/mm, front/rear.
| Series | Part number | Springs f/r | Damping | Intended for |
|---|---|---|---|---|
| BR (this kit) | N-11-BR-RS | 6/4 | 30 clicks, linear, rubber top mounts front | Road with the occasional track day |
| DS | N-11-DS-DS | 6/4 | 30 clicks, digressive, rubber top mounts front | Track-focused, sporty road use |
| ZX | N-11-ZX | 6/4 | 3-way (20/12/30 clicks), external reservoir | Competition, long sessions, drifting |
Frequently asked questions
Which Mazda MX-5 NC is the BC Racing BR coilover kit suitable for?
BC Racing UK approves this BR kit for the Mazda MX-5 NC, model years 2006 to 2015. BC Racing does not mention a separate body variant; if you have an NC Roadster Coupe and are in doubt, contact us and send your chassis number, and we will check the fitment for you.
What is the difference between the BC Racing BR and DS for the Mazda MX-5 NC?
The BR has a linear piston for the road with the occasional track day, the DS a digressive piston that damps more firmly at low piston speeds and is more track-focused. For the NC both have 6/4 kg/mm. For mainly road use, choose the BR coilover kit MX-5 NC.
Can I have the BC Racing BR coilover kit for the MX-5 NC rebuilt later?
Yes. The dampers of the BR series can be rebuilt. Contact us when your kit is due for a rebuild.
What is the delivery time of the BC Racing BR coilover kit for the Mazda MX-5 NC?
The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If BC Racing has temporarily sold out of the kit, you can still order it and we will let you know when it has arrived.
Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.




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