Description
BMW E36 3 Series Compact True Rear (94-00) BC Racing ZX coilover kit 12/10 kg/mm
The BC Racing ZX coilover kit E36 Compact True Rear (part number I-79-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, in True Rear version. The spring rate is 12 kg/mm front and 10 kg/mm rear.
This kit combines 3-way adjustable reservoir dampers with a True Rear rear axle. True Rear means that the separate rear spring and separate rear damper of the Compact make way for a complete strut, with the spring around the damper.
With that layout you set the rear ride height directly on the strut. The spring rate of 12/10 kg/mm is clearly stiffer than on the standard ZX for the Compact (6/8 kg/mm). Each damper has 20 clicks of low speed compression, 12 clicks of high speed compression and 30 clicks of rebound.
The ZX series combines the digressive DS tuning with the external reservoirs of the ER and is intended for competition, long track sessions and heavy drift use.
Key benefits
- True Rear rear axle: a complete strut at the rear instead of a separate spring and damper.
- 3-way dampers: 20 clicks LS compression, 12 clicks HS compression, 30 clicks rebound.
- Stiff springs 12/10 kg/mm: for a Compact that moves little under heavy load.
- External reservoirs: dual-piston monotube, made for long sessions.
- Digressive piston: control during weight transfer, compliant over kerbs.
- Racing oil: very high viscosity index for consistent damping.
- Replaceable upper mounting: camber plates, rubber top mounts optional.
- Rebuildable: built for intensive competition use.
Suitable for
BMW 3 Series Compact E36/5, model years 1994 to 2000
- Racing on the circuit
- Heavy drift use and long sessions
- Stripped or heavily modified Compacts that need stiff springs
Technical specifications
- Manufacturer: BC Racing
- Part number: I-79-ZX
- Series: ZX, 3-way competition series
- Version: True Rear, complete strut at the rear (spring around the damper)
- Spring rate front/rear: 12/10 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: 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
At the rear the coilover strut replaces the separate spring and damper; at the front you replace the struts. Please note: BC Racing requires the body shell to be reinforced before fitting a True Rear kit. Decide beforehand where the reservoirs will go, have the kit fitted preferably by an experienced mechanic and after fitting have the wheel alignment and corner weights set by a specialist. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If the kit is not in stock, simply order it and we will keep you informed.
Stiff springs, a complete strut at the rear and three click ranges per damper: this is how an E36 Compact becomes a fully fledged competition car.
Why choose this ZX coilover kit E36 Compact True Rear?
This kit is intended for those who use the Compact in competition and heavy drifting. The True Rear rear axle gives you a complete strut at the rear, and the 3-way dampers let you adjust slow and fast movements separately. You do not have to compromise on the layout of the rear axle or on the fineness of the damping.
BC Racing coilover kits for the BMW E36 Compact True Rear
Overview of the BC Racing series for the BMW E36 Compact True Rear 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-79-BR-RH | 5/5 | 30 clicks, linear | Road with the occasional track day |
| DS | I-79-DS-DH | 5/5 | 30 clicks, digressive | Track-focused, sporty road use |
| RM | I-79-RM-MA | 6/5 | 30 clicks, digressive, synthetic oil | Track days, hill climbs, tarmac rally |
| ER | I-79-ER | 5/5 | 2-way, 30 clicks per direction, external reservoir | Serious track and competition use |
| ZX (this kit) | I-79-ZX | 12/10 | 3-way (20/12/30 clicks), external reservoir | Competition, long sessions, drift |
For the standard version without True Rear, BC Racing has separate kits for the E36 Compact. Their part numbers start with I-25.
Frequently asked questions
What is the difference between the BC Racing ZX True Rear and the standard ZX for the E36 Compact?
The ZX coilover kit E36 Compact True Rear (I-79-ZX) has a complete strut at the rear and 12/10 kg/mm. The standard ZX (I-25-ZX) keeps a separate spring and separate damper at the rear and has 6/8 kg/mm.
What is the difference between the BC Racing ZX and ER True Rear for the E36 Compact?
The ZX True Rear is 3-way, with separate low and high speed compression, and has considerably stiffer springs (12/10 kg/mm). The ER True Rear is 2-way adjustable and has 5/5 kg/mm.
Is noise covered by the warranty on the BC Racing ZX?
No, noise is not covered by the warranty on this competition series. You do get a 1 year warranty on manufacturing defects.
Does this BC Racing ZX coilover kit E36 Compact True Rear also fit an E36 Sedan, Coupe or Touring?
No. This kit is only intended for the E36 Compact (E36/5), model years 1994 to 2000. For the E36 Sedan, Coupe, Convertible and Touring in True Rear version, BC Racing has separate kits with part numbers starting with I-30.
What is the delivery time of this BC Racing ZX coilover kit?
The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If it is temporarily unavailable, 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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