Description
Nissan Z34 370Z Fairlady Z (08-20) BC Racing ZX coilover kit 9/10 kg/mm
The BC Racing ZX coilover kit 370Z (part number D-30-ZX) is a coilover kit adjustable in height and damping, also simply called a coilover, for the Nissan 370Z and Fairlady Z (Z34), Coupe and Roadster, model years 2008 to 2020. The spring rate is 9 kg/mm front and 10 kg/mm rear.
The ZX series is made for competitive track work, long sessions and demanding drifting. In it, BC Racing combines the DS and the ER: an upright monotube with a double piston, an external reservoir and race oil with a very high viscosity index. The upper mounting is replaceable, and you adjust the damping in three directions: 20 clicks of low-speed compression, 12 clicks of high-speed compression and 30 clicks of rebound.
For the Z34 this is the standard ZX. The rear keeps the separate spring and damper that the 370Z has from the factory. If you want the spring around the damper at the rear, look at the True Rear kits from BC Racing, with part numbers starting with D-121.
Key benefits
- 3-way adjustable: LS compression, HS compression and rebound independently of each other.
- DS and ER in one kit: digressive, with double piston and external reservoir.
- Race oil: very high viscosity index, for long sessions.
- Replaceable upper mounting: easier to maintain.
- Camber plates: rubber top mounts as an option.
- Standard rear layout: separate spring and damper at the rear.
- 9/10 kg/mm: spring rate for the standard 370Z.
- Rebuildable: the dampers can be rebuilt.
Suitable for
Nissan 370Z and Fairlady Z (Z34), Coupe and Roadster, model years 2008 to 2020, in the standard version with separate spring and damper at the rear. The True Rear version has its own kits with part numbers starting with D-121.
- Competitive track work
- Drifting with long runs
- Long sessions with stable damping
Technical specifications
- Manufacturer: BC Racing
- Part number: D-30-ZX
- Series: ZX, 3-way, combination of DS and ER
- Version: standard (not True Rear), at the rear a separate spring and damper as from the factory
- Spring rate front/rear: 9/10 kg/mm
- Damper design: upright monotube with double piston and external reservoir, digressive, race oil with very high viscosity index
- Damping: 3-way, 20 clicks low-speed compression, 12 clicks high-speed compression, 30 clicks rebound
- Ride height: steplessly adjustable via the damper body
- Top mounts: replaceable upper mounting, camber plates, rubber top mounts optional
- 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; with this track-focused series, noise is not covered by the warranty
Fitting and delivery
The ZX replaces the original dampers and springs of the 370Z and is made specifically for the Z34. We recommend having it fitted by an experienced mechanic and then having the wheel alignment set at the chosen ride height. Start with a neutral setup and change one of the three adjusters per session; that way you quickly learn what each setting does. As long as the manufacturer has stock, the delivery time is 1 to 2 weeks. If BC Racing is temporarily out of stock, you can still order and we will let you know the delivery date.
The BC Racing ZX for the Nissan 370Z (Z34) is 3-way adjustable and combines the digressive DS with the external reservoir of the ER, with 9/10 kg/mm springs.
Why choose this ZX coilover kit 370Z?
A 370Z that competes or does long drift runs asks a lot of its dampers. With the ZX you tune low-speed compression, high-speed compression and rebound each separately, so you can set the balance in the corner independently of the response over kerbs. The race oil keeps the damping stable when the sessions get long.
BC Racing coilover kits for the Nissan 370Z (Z34)
Overview of the BC Racing series for the Nissan 370Z (Z34) 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 | D-30-BR-RS | 9/10 | 30 clicks, linear, rubber top mounts front | Road with the occasional track day |
| DS | D-30-DS-DS | 9/10 | 30 clicks, digressive, rubber top mounts front | Track-focused, sporty road use |
| ER | D-30-ER | 9/10 | 2-way, 30 clicks per direction, external reservoir | Serious track and competition use |
| ZX (this kit) | D-30-ZX | 9/10 | 3-way (20/12/30 clicks), external reservoir | Competition, long sessions, drift |
The kits in this table are the standard version, without True Rear. For the True Rear version of the Nissan 370Z (Z34), BC Racing has separate kits. Their part numbers start with D-121.
Frequently asked questions
What is the difference between the BC Racing ZX and ER for the Nissan 370Z?
The ZX is 3-way, the ER 2-way. On the ZX, in addition to the rebound, you also set the compression separately for low and high speed; on the ER the compression is a single setting. For the standard 370Z both have 9/10 kg/mm.
Does the BC Racing ZX for the 370Z fit the Roadster?
Yes. BC Racing lists the D-30-ZX for the 370Z and Fairlady Z (Z34) from 2008 to 2020, Coupe and Roadster. If in doubt, contact us.
Is the BC Racing ZX coilover kit 370Z the True Rear version?
No. This ZX coilover kit 370Z is the standard version with a separate spring and damper at the rear. The True Rear kits for the 370Z have part numbers starting with D-121.
What is the delivery time of the BC Racing ZX for the Nissan 370Z?
1 to 2 weeks as long as the manufacturer has stock. If the ZX is sold out at BC Racing, you can still order 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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