Description
BMW E36 3 Series Compact (94-00) BC Racing ZX coilover kit 6/8 kg/mm
The BC Racing ZX coilover kit E36 Compact (part number I-25-ZX) is a coilover kit adjustable in height and damping, also simply called a coilover, for the BMW 3 Series E36 Compact (E36/5), model years 1994 to 2000. The spring rate is 6 kg/mm front and 8 kg/mm rear.
It is BC Racing’s 3-way adjustable competition kit. The ZX series combines the digressive tuning of the DS with the external reservoirs of the ER, and is made for circuit racing, long sessions and heavy drift use.
Each damper has three separate settings: 20 clicks for low-speed compression, 12 clicks for high-speed compression and 30 clicks for rebound. This lets you tune slow weight transfer separately from the fast impacts of kerbs and bumps. The dual-piston monotube dampers are mounted upright and filled with race oil with a very high viscosity index.
This is the standard version with a separate spring and a separate damper at the rear. The spring rate is 6/8 kg/mm.
Key benefits
- 3-way adjustment: low-speed compression, high-speed compression and rebound independent of each other.
- External reservoirs: extra oil volume for consistent damping in long sessions.
- Dual-piston design: monotube with double piston and external reservoir.
- Digressive characteristic: flat in corners, compliant over kerbs.
- Race oil: very high viscosity index, little fade as the dampers warm up.
- Replaceable upper mounting: with camber plates, rubber top mounts optional.
- Spring rate 6/8 kg/mm: BC Racing’s choice for the Compact in standard layout.
- Rebuildable: built for several seasons of competition use.
Suitable for
BMW 3 Series Compact E36/5, model years 1994 to 2000
- Circuit racing and club races
- Long sessions and heavy drift use
- Drivers who want to adjust fast and slow damper movements separately
Technical specifications
- Manufacturer: BC Racing
- Part number: I-25-ZX
- Series: ZX, 3-way competition series
- Version: standard, separate spring and separate damper at the rear
- Spring rate front/rear: 6/8 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 mounting with 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. Noise is not covered by the warranty
Fitting and delivery
The kit is vehicle-specific and replaces the original dampers and springs; at the rear you replace the damper and spring. Choose a fixed position for the reservoirs where the hoses cannot chafe or get trapped during compression and extension. After fitting, have the wheel alignment and preferably also the corner weights set. 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.
Three settings per damper give you the freedom to tackle every corner, every kerb and every circuit separately with the Compact.
Why choose this ZX coilover kit E36 Compact?
Because with the ZX you have three separate damping settings per damper instead of one or two. Where a 1-way kit always forces you to choose a compromise, here you deal with slow weight transfer and fast impacts separately. If you race or do long drift sessions, this kit is made for that.
BC Racing coilover kits for the BMW E36 Compact
Overview of the BC Racing series for the BMW E36 Compact 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 | I-25-BR-RA | 6/8 | 30 clicks, linear | Road with the occasional track day |
| DS | I-25-DS-DA | 5/8 | 30 clicks, digressive | Track-focused, sporty road use |
| RM | I-25-RM-MA | 6/6 | 30 clicks, digressive, synthetic oil | Track days, hill climbs, tarmac rally |
| RM | I-25-RM-MA | 6/8 | 30 clicks, digressive, synthetic oil | Track days, hill climbs, tarmac rally |
| ER | I-25-ER | 6/8 | 2-way, 30 clicks per direction, external reservoir | Serious track and competition use |
| ZX (this kit) | I-25-ZX | 6/8 | 3-way (20/12/30 clicks), external reservoir | Competition, long sessions, drifting |
For the BMW E36 Compact True Rear, BC Racing has separate kits. Their part numbers start with I-79.
Frequently asked questions
What is the difference between the BC Racing ZX and ER for the E36 Compact?
The ZX coilover kit E36 Compact is 3-way adjustable, the ER 2-way: the ZX also splits the compression into low and high speed. With the ER you adjust compression and rebound separately.
Is the BC Racing ZX for the E36 Compact also available in a True Rear version?
Yes, BC Racing also supplies the ZX for the Compact in a True Rear version, with a spring rate of 12/10 kg/mm. With True Rear, the rear of the Compact becomes a complete strut with the spring around the damper, instead of the separate spring and separate damper of this standard kit.
Is noise covered by the warranty of the BC Racing ZX coilover kit for the E36 Compact?
No. You get a 1 year warranty on manufacturing defects, but for this series noise is not covered by the warranty.
What is the delivery time of this BC Racing ZX coilover kit?
The delivery time is usually 1 to 2 weeks as long as the manufacturer has stock. If there is no 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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