Description
BC Racing ER coilover kit Subaru BRZ ZC6 (12-21) 6/4 kg/mm
The BC Racing ER coilover kit BRZ ZC6 (part number F-20-ER) 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.
For the Subaru BRZ (ZC6), BC Racing supplies this ER kit with 6 kg/mm front and 4 kg/mm rear, softer than the 10/8 kg/mm of the C-89-ER that BC Racing UK also lists for the BRZ. The ER series is 2-way adjustable: you set compression and rebound each in 30 clicks, independently of each other.
A monotube with a double piston, an external reservoir and fully synthetic oil with a very high viscosity index make the ER suitable for serious track and competition use. The ride height is steplessly adjustable via the damper body.
Key benefits
- 2-way adjustment: compression and rebound 30 clicks each, independently of each other.
- External reservoir: combined with a monotube with double piston.
- Digressive: firm damping at low piston speeds.
- Synthetic oil with very high viscosity index: stable when the dampers get hot.
- Spring rate 6/4 kg/mm: the BRZ version, softer at the rear than at the front.
- Camber plates: rubber top mounts optional.
- Concave lock ring: locks the set height.
- 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.
- Serious track use with the BRZ
- Club races and time attack
- Drivers who want to tune compression and rebound separately
Technical specifications
- Manufacturer: BC Racing
- Part number: F-20-ER
- Series: ER, for serious track and competition use
- Spring rate front/rear: 6/4 kg/mm
- Damper design: monotube with double piston and external reservoir, digressive, fully synthetic oil with very high viscosity index
- Damping: 2-way, compression and rebound independently of each other, 30 clicks each
- Ride height: steplessly adjustable via the damper body
- Top mounts: camber plates on suitable kits, 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 kit is vehicle-specific for the BRZ ZC6 and takes the place of the original dampers and springs front and rear. We recommend leaving the fitting to an experienced mechanic and having the wheel alignment checked after setting the ride height. Then adjust compression and rebound step by step, with one change per session. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If the kit is temporarily sold out at BC Racing, you can still order and we will let you know when it has arrived.
The BC Racing F-20-ER for the Subaru BRZ ZC6 is 2-way adjustable and is supplied with 6 kg/mm springs front and 4 kg/mm rear.
Why choose this ER coilover kit BRZ ZC6?
If you want to take your BRZ on track seriously and be able to set compression and rebound independently of each other, the ER is the logical step after a kit with a single adjustment. With 6/4 kg/mm you choose the springs that BC Racing lists for the BRZ instead of the stiffer 10/8 kg/mm of the C-89-ER. This keeps the rear axle in particular more supple, while you have the full 2-way adjustment.
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 (this kit) | 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 | 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 ER coilover kit BRZ ZC6 and the C-89-ER?
The difference is in the springs: the F-20-ER has 6/4 kg/mm, the C-89-ER 10/8 kg/mm. Both are BC Racing ER kits with 2-way adjustment, and BC Racing UK lists both for the Subaru BRZ ZC6. The ER coilover kit BRZ ZC6 is therefore the softer choice.
What is the difference between the BC Racing ER and HM for the Subaru BRZ ZC6?
The main difference is the inverted design of the HM, which it takes over from the RM series. Both are 2-way adjustable with 30 clicks per direction and have 6/4 kg/mm springs for the BRZ. For road use, BC Racing recommends the ER over the HM.
Does the BC Racing ER coilover kit for the BRZ ZC6 also fit the Toyota GT86?
Not according to BC Racing: the C-89-ER is intended for the Toyota GT86 (ZN6), and BC Racing UK lists the F-20-ER under the Subaru BRZ (ZC6) with rear-wheel drive, model years 2012 to 2021. If in doubt, contact us.
How quickly is the BC Racing ER for the Subaru BRZ ZC6 available?
Normally within 1 to 2 weeks, as long as the manufacturer has stock. If BC Racing has temporarily run out of stock, you can still order the kit; we will let you know when it is coming.
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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