Description
Subaru ZC6 BRZ (12-21) BC Racing ZX coilover kit 5/5 kg/mm
The BC Racing ZX coilover kit BRZ ZC6 (part number F-20-ZX) is a coilover kit adjustable in height and damping, also simply called a coilover, for the Subaru BRZ (ZC6) with rear-wheel drive, model years 2012 to 2021. The spring rate is 5 kg/mm front and 5 kg/mm rear.
The ZX is the 3-way series from BC Racing for competitive track work, long sessions and demanding drifting. For the Subaru BRZ (ZC6), this F-20 kit has 5 kg/mm springs front and rear.
Technically, the ZX is a cross between the DS and the ER: an upright monotube with a double piston and external reservoir. You set low-speed compression, high-speed compression and rebound separately, in 20, 12 and 30 clicks, and race oil with a very high viscosity index keeps the damping consistent. You set the ride height steplessly via the damper body.
Key benefits
- Three separate adjustments: 20 clicks of low-speed compression, 12 clicks of high-speed compression and 30 clicks of rebound.
- Upright monotube with double piston: with external reservoir.
- Digressive characteristic: the body stays under control at low piston speeds.
- Race oil: with a very high viscosity index.
- Replaceable upper mounting: can be replaced separately during maintenance.
- Camber plates: with rubber top mounts as an option.
- Springs 5/5 kg/mm: the same front and rear on the BRZ ZC6.
- Rebuildable: the dampers can be rebuilt.
Suitable for
Subaru BRZ (ZC6) with rear-wheel drive, model years 2012 to 2021. Not for the second generation BRZ (ZD8) from 2022.
- Drifting with the BRZ
- Competitive track work and long sessions
- Drivers who want to tune the damping in three steps
Technical specifications
- Manufacturer: BC Racing
- Part number: F-20-ZX
- Series: ZX, 3-way, combination of DS and ER
- Spring rate front/rear: 5/5 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; damper noise from track use is not covered by the warranty
Fitting and delivery
The ZX kit is vehicle-specific for the BRZ ZC6 and replaces the original dampers and springs. We recommend having it fitted by an experienced mechanic and having the wheel alignment set as soon as the ride height is right. Take your time tuning the three adjustments and note down what you change in each session. The delivery time is 1 to 2 weeks as long as the manufacturer has stock; if the kit is sold out at BC Racing, you can still order and we will get back to you with the expected delivery date.
The BC Racing ZX series combines the DS and the ER into a 3-way adjustable coilover kit with external reservoir.
Why choose this ZX coilover kit BRZ ZC6?
For a BRZ that drifts or runs long track sessions, you want to be able to fine-tune every part of the damping. With the ZX you control how the car responds to turn-in and braking, independently of how it goes over kerbs. BC Racing also names the ZX, together with the BR, DS and ER, as a better choice for road use than the RM, HM and ZR, so the BRZ remains usable outside the track as well.
BC Racing coilover kits for the Subaru BRZ (ZC6)
Overview of the BC Racing series for the Subaru BRZ (ZC6) 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 |
|---|---|---|---|---|
| RM | F-20-RM-MA | 6/6 | 30 clicks, digressive, synthetic oil, pillowball top mounts front | Track days, hill climbs, tarmac rally |
| ER | F-20-ER | 6/4 | 2-way, 30 clicks per direction, external reservoir | Serious track and competition use |
| HM | F-20-HM | 6/4 | 2-way, 30 clicks per direction, external reservoir | Serious track use |
| ZX (this kit) | F-20-ZX | 5/5 | 3-way (20/12/30 clicks), external reservoir | Competition, long sessions, drift |
| ZR | F-20-ZR | 6/4 | 3-way (20/12/30 clicks), external reservoir | Competitive motorsport |
For the Toyota GT86 (ZN6), BC Racing has separate kits. Their part numbers start with C-89.
Frequently asked questions
What is the difference between the BC Racing ZX and ZR for the Subaru BRZ ZC6?
The ZX is an upright monotube with 5/5 kg/mm springs; the ZR has an inverted design on MacPherson struts and 6/4 kg/mm springs for the BRZ. Both have 3-way adjustment with 20, 12 and 30 clicks. The ZR needs periodic greasing and, according to BC Racing, is less suitable for the road.
Does the BC Racing ZX coilover kit for the BRZ ZC6 also fit the new BRZ ZD8?
No, BC Racing UK lists this kit for the Subaru BRZ (ZC6) with rear-wheel drive, model years 2012 to 2021. For the second generation BRZ (ZD8) from 2022, BC Racing has separate kits.
Is the BC Racing ZX coilover kit BRZ ZC6 the same as the C-89-ZX for the GT86?
No, they are separate part numbers, although both have 5/5 kg/mm and 3-way adjustment. The ZX coilover kit BRZ ZC6 (F-20-ZX) is listed by BC Racing UK under the Subaru BRZ ZC6; the C-89-ZX is listed under the Toyota GT86 and is also mentioned by BC Racing UK for the BRZ. If you are unsure which to choose, contact us.
How quickly does Race4DriftParts deliver the BC Racing ZX for the Subaru BRZ ZC6?
We deliver the ZX in 1 to 2 weeks as long as the manufacturer has stock. If BC Racing is out of stock, you can still order and we will pass on the delivery date to you.
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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