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Description

Nissan Z33 350Z True Rear Fairlady Z (03-09) BC Racing ER coilover kit 12/5 kg/mm

The BC Racing ER coilover kit 350Z True Rear (part number D-107-ER) 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 12 kg/mm front and 5 kg/mm rear.

The kit has 2-way adjustable dampers with external reservoirs. In this True Rear version, the rear becomes a complete strut with the spring around the damper. That is different from the Z33 from the factory and from the standard version, which have a separate spring and a separate damper at the rear.

The ER series is made for serious track work and competition. You set compression and rebound independently of each other, each in 30 clicks. The external reservoir and the dual-piston construction provide extra oil volume, so that the damping stays consistent even after long sessions.

The spring rate of this kit is 12/5 kg/mm.

Key benefits

• True Rear version: a complete strut at the rear instead of a separate spring and damper.
• 2-way adjustable: compression and rebound independently, 30 clicks each.
• External reservoirs: dual-piston monotube for consistent damping.
• Digressive characteristic: control over roll and dive without harsh impacts.
• Fully synthetic oil: with a very high viscosity index.
• Concave lock ring: prevents the height setting from working loose.
• Spring rate 12/5 kg/mm: stiff front end, supple True Rear rear end.
• Rebuildable: maintainable for several seasons.

Suitable for

Nissan 350Z and Fairlady Z Z33, model years 2003 to 2009

• Serious track use and competition
• Drifting with many consecutive runs
• Drivers who want to set compression and rebound separately

Technical specifications

• Manufacturer: BC Racing
• Part number: D-107-ER
• Series: ER, 2-way with external reservoir
• Version: True Rear, complete strut at the rear (spring around the damper)
• Spring rate front/rear: 12/5 kg/mm
• Damper design: dual-piston monotube with external reservoir, digressive
• Damping: 2-way, 30 clicks compression and 30 clicks rebound, independent
• Ride height: infinitely adjustable via the damper body
• Top mounts: camber plates, rubber top mounts optional; check valve 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

When fitting, you replace the springs and dampers all round and a coilover takes the place of the separate construction at the rear. Route the reservoir lines so that they do not chafe anywhere. Have the wheel alignment set after fitting. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. Not in stock? You can still order, and we will keep you informed.

Setting compression and rebound independently on a Z33 with a complete strut at the rear: that is how you fine-tune the damping lap by lap.

Why choose this ER coilover kit 350Z True Rear?

With separate compression and rebound adjustment you can tune the Z33 very precisely: quicker turn-in, a calmer corner exit and stability when putting the power down. The True Rear construction makes it easier to get the ride height and balance exactly right at the rear.

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.

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 is the difference between the BC Racing ER True Rear and the standard ER for the Nissan 350Z?

The ER coilover kit 350Z True Rear (D-107) has a complete strut at the rear and 12/5 kg/mm. The standard ER (D-17-ER) keeps a separate spring and separate damper at the rear and has 12/10 kg/mm.

When should I choose the BC Racing ZX instead of the ER for the Nissan 350Z True Rear?

Choose the ZX if you want to fine-tune even further: the ER is 2-way adjustable, the ZX is 3-way and splits the compression into low and high speed.

Is a check valve available for the BC Racing ER coilover kit 350Z True Rear?

Yes, a check valve is an option that BC Racing offers for the ER series. If you would like it included, ask us about the possibilities.

What is the delivery time of this BC Racing ER coilover kit for the Nissan 350Z True Rear?

The delivery time is 1 to 2 weeks as long as the manufacturer has stock. Otherwise you can still order and we will keep you informed.

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.