Description
Subaru ZC6 BRZ (12-21) BC Racing ZR coilover kit 6/4 kg/mm
The BC Racing ZR coilover kit BRZ ZC6 (part number F-20-ZR) 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 6 kg/mm front and 4 kg/mm rear.
The ZR is the motorsport series from BC Racing, and BC Racing lists this F-20 version under the Subaru BRZ (ZC6), with 6 kg/mm springs front and 4 kg/mm rear. On MacPherson struts the damper is inverted; with double wishbones it is upright.
Each damper has a double piston and an external reservoir that can be mounted on the chassis or on the damper body, with braided steel lines. The 3-way adjustment (20 clicks of low-speed compression, 12 clicks of high-speed compression and 30 clicks of rebound) and a ride height that works completely independently of the spring preload give you plenty of room to tune the BRZ.
Key benefits
- 3-way adjustment: low-speed and high-speed compression separate from the rebound.
- Flexible reservoir placement: on the chassis or on the damper body.
- Braided steel lines: between damper and reservoir.
- Inverted on MacPherson: upright with double wishbones.
- Height completely independent of spring preload: adjustable separately.
- Digressive with synthetic oil: for competitive use.
- Camber plates: rubber top mounts optional.
- Spring rate 6/4 kg/mm: softer than the 8/8 kg/mm of the C-89-ZR.
- 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.
- Racing with the BRZ
- Competitive motorsport
- Drivers who want to be able to fine-tune every damping setting separately
Technical specifications
- Manufacturer: BC Racing
- Part number: F-20-ZR
- Series: ZR, for competitive motorsport
- Spring rate front/rear: 6/4 kg/mm
- Damper design: inverted monotube on MacPherson struts, upright monotube with double wishbones, double piston, external reservoir (on chassis or damper body) with braided steel lines, digressive, synthetic oil
- Damping: 3-way, 20 clicks low-speed compression, 12 clicks high-speed compression, 30 clicks rebound
- Ride height: adjustable completely independently of the spring preload
- Top mounts: 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 ZR kit is vehicle-specific for the BRZ ZC6 and replaces the original dampers and springs front and rear. We recommend leaving the fitting and the placement of the reservoirs to an experienced mechanic and then having the wheel alignment set. BC Racing advises periodic greasing for the RM and ZR series and recommends them less for road use than the BR, DS, ER or ZX. 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 and we will let you know when the kit is coming.
The BC Racing ZR is 3-way adjustable and has an external reservoir that can be mounted on the chassis or on the damper body.
Why choose this ZR coilover kit BRZ ZC6?
If you race your BRZ and do not want to give up control of a single setting, the ZR is the kit to look at. Three adjustments, a ride height independent of the spring preload and reservoirs that can be placed flexibly make it suitable for serious motorsport. Compared with the C-89-ZR, which BC Racing UK also lists for the BRZ, you choose 6/4 kg/mm here instead of 8/8 kg/mm.
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 | F-20-ZX | 5/5 | 3-way (20/12/30 clicks), external reservoir | Competition, long sessions, drift |
| ZR (this kit) | 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 ZR coilover kit BRZ ZC6 and the C-89-ZR?
The springs differ: the F-20-ZR has 6/4 kg/mm, the C-89-ZR 8/8 kg/mm. The ZR coilover kit BRZ ZC6 is therefore the softer variant; both are ZR kits with the same 3-way adjustment.
What is the difference between the BC Racing ZR and HM for the Subaru BRZ ZC6?
The ZR is 3-way adjustable, the HM 2-way. The ZR splits the compression into 20 clicks low-speed and 12 clicks high-speed, alongside 30 clicks of rebound; the HM has 30 clicks for compression and 30 for rebound. For the BRZ both have 6/4 kg/mm springs and an external reservoir.
Does the BC Racing ZR coilover kit for the BRZ ZC6 fit every Subaru BRZ?
No, only the first generation: BC Racing UK lists it for the Subaru BRZ (ZC6) with rear-wheel drive, model years 2012 to 2021. For the BRZ ZD8 from 2022, BC Racing has separate kits.
What is the delivery time of the BC Racing ZR for the Subaru BRZ ZC6?
The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If the kit is temporarily out of stock at BC Racing, 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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