Description
Nissan Z33 350Z True Rear Fairlady Z (03-09) BC Racing ZX coilover kit 16/5.5 kg/mm
The BC Racing ZX coilover kit 350Z True Rear (part number D-107-ZX) is a coilover kit adjustable in height and damping, also simply called a coilover, for the Nissan 350Z and Fairlady Z (Z33), model years 2003 to 2009, in True Rear version. The spring rate is 16 kg/mm front and 5.5 kg/mm rear.
This kit is 3-way adjustable. True Rear means that the rear becomes a complete strut: the spring sits around the damper, instead of the separate spring and separate damper that the Z33 has from the factory. This lets you set the ride height and spring at the rear just as directly as at the front.
The ZX series combines the digressive valving of the DS with the external reservoirs of the ER, and adds 3-way adjustment. You set low-speed compression, high-speed compression and rebound independently of each other. This is a kit for competition drivers, long track sessions and heavy drift use.
The spring rate is 16/5.5 kg/mm. That stiff front spring with a relatively soft rear spring suits the layout with the spring directly around the rear damper.
Key benefits
- True Rear layout: a complete strut at the rear with the spring around the damper.
- 3-way adjustable: 20 clicks low-speed compression, 12 clicks high-speed compression and 30 clicks rebound.
- External reservoirs: dual-piston monotube with extra oil volume.
- Digressive piston: firm control of body movements.
- Race oil with a very high viscosity index: consistent behaviour during long sessions.
- Replaceable upper mount: with camber plates, rubber top mounts optional.
- Spring rate 16/5.5 kg/mm: matched to the True Rear version of the Z33.
- Rebuildable: built to last for many seasons.
Suitable for
Nissan 350Z and Fairlady Z Z33, model years 2003 to 2009
- Competition on the track
- Long sessions and heavy drift use
- Drivers who want a complete strut at the rear instead of a separate spring and damper
Technical specifications
- Manufacturer: BC Racing
- Part number: D-107-ZX
- Series: ZX, 3-way competition series
- Version: True Rear, complete strut at the rear (spring around the damper)
- Spring rate front/rear: 16/5.5 kg/mm
- Damper design: upright monotube, dual-piston with external reservoir, digressive
- Damping: 3-way, 20 clicks LS compression, 12 clicks HS compression, 30 clicks rebound
- Ride height: infinitely adjustable via the damper body
- Top mounts: replaceable upper mount with camber plates, rubber top mounts optional
- Contents: 4 struts with dampers and springs, lower mounts, top mounts where applicable, adjustment spanners and warranty card with serial number
- Warranty: 1 year on manufacturing defects. Noise is not covered by the warranty
Fitting and delivery
The kit replaces the dampers and springs all round; at the rear the coilover takes the place of the separate spring and damper. Allow time for mounting the reservoirs and, after fitting, have the wheel alignment and corner weights set professionally. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If the kit is temporarily out of stock, you can still order and we will keep you informed.
Three click ranges per damper and a complete strut at the rear: with the ZX you can fine-tune a Z33 in detail for every circuit.
Why choose this ZX coilover kit 350Z True Rear?
Anyone who uses a 350Z seriously runs into limits with the original separate rear spring when it comes to setup and ride height. This kit solves that and at the same time gives you 3-way damping adjustment. You set fast bumps, kerbs and slow weight transfer independently of each other.
BC Racing coilover kits for the Nissan 350Z (Z33) True Rear
Overview of the BC Racing series for the Nissan 350Z (Z33) True Rear 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-107-BR-RS | 9/5 | 30 clicks, linear | Road with the occasional track day |
| DS | D-107-DS-DS | 9/5 | 30 clicks, digressive | Track-focused, sporty road use |
| ER | D-107-ER | 12/5 | 2-way, 30 clicks per direction, external reservoir | Serious track and competition use |
| ZX (this kit) | D-107-ZX | 16/5.5 | 3-way (20/12/30 clicks), external reservoir | Competition, long sessions, drift |
For the standard version without True Rear, with a separate spring and a separate damper at the rear, BC Racing has separate kits. Their part numbers start with D-17.
Frequently asked questions
What does True Rear mean for the BC Racing ZX coilover kit for the Nissan 350Z?
The ZX coilover kit 350Z True Rear (D-107) has a complete strut at the rear: the spring sits around the damper. The standard version (D-17-ZX) keeps the original layout at the rear with a separate spring and a separate damper, and has a spring rate of 9/8 kg/mm instead of 16/5.5 kg/mm.
What is the difference between the BC Racing ZX and ER for the Nissan 350Z True Rear?
The ZX is 3-way adjustable and the ER 2-way. The ER adjusts compression and rebound separately, each in 30 clicks, and the ZX also splits the compression into low and high speed, for 3-way adjustment.
Is noise from the BC Racing ZX dampers for the Nissan 350Z covered by the warranty?
No. You get 1 year warranty on manufacturing defects, but noise is not covered by the warranty for this track-focused series.
What is the delivery time of this BC Racing ZX coilover kit for the Nissan 350Z True Rear?
The delivery time is 1 to 2 weeks. If BC Racing does not have it in stock, you can still order and we will let you know when it arrives.
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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