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Description

BMW F80/F82 M3/M4 3-bolt True Rear (14-20) BC Racing ZX coilover kit 6/6 kg/mm

The BC Racing ZX coilover kit M3 M4 F80 3-bolt True Rear (part number I-132-ZX) is a coilover kit adjustable in height and damping, also simply called a coilover, for the BMW M3 F80 and M4 F82 with front top mounts secured by 3 bolts, model years 2014 to 2020, in True Rear version. The spring rate is 6 kg/mm front and 6 kg/mm rear.

The ZX series combines the construction of the DS with the external reservoir of the ER and adds 3-way adjustment. You set the low-speed compression in 20 clicks, the high-speed compression in 12 clicks and the rebound in 30 clicks. BC Racing makes the ZX for competitive track use, long sessions and demanding drifting.

The upright monotube dampers have a double piston, digressive damping and race oil with a very high viscosity index. In this True Rear version the spring also sits around the damper at the rear. The kit is for the M3 F80 and M4 F82 with front top mounts secured by 3 bolts.

Key benefits

• 3-way adjustable: 20 clicks of low-speed compression, 12 clicks of high-speed compression, 30 clicks of rebound.
• External reservoir: upright monotube dampers with double piston.
• Digressive damping: firm control during slow body movements.
• Race oil: with a very high viscosity index.
• Replaceable upper mounting: with camber plates on suitable kits, rubber top mounts optional.
• True Rear: a coilover at the rear as well, with the spring around the damper.
• 3-bolt front top mounts: for the M3 F80 and M4 F82 with this mounting.
• Rebuildable: the dampers can be rebuilt.

Suitable for

BMW M3 F80 Sedan and M4 F82 Coupe with rear-wheel drive, model years 2014 to 2020, with front top mounts secured to the strut tower with 3 bolts, in True Rear version. If the front top mounts are secured with 5 bolts, choose the I-133 kit. The M4 Convertible (F83) is not listed by BC Racing; please contact us for that version.

• Competitions and long track sessions
• Demanding drifting with an M3 or M4
• Drivers who want to set low-speed and high-speed compression separately

Technical specifications

• Manufacturer: BC Racing
• Part number: I-132-ZX
• Series: ZX, 3-way with external reservoir
• Version: True Rear (integrated rear, a complete strut at the rear with the spring around the damper), for cars with front top mounts secured by 3 bolts
• Spring rate front/rear: 6/6 kg/mm
• Damper design: upright monotube with double piston and external reservoir, digressive, race oil with a very high viscosity index
• Damping: 3-way, 20 clicks low-speed compression, 12 clicks high-speed compression and 30 clicks rebound
• Ride height: continuously adjustable via the damper body
• Top mounts: replaceable upper mounting, camber plates on suitable kits, 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 from track use is not covered by the warranty

Fitting and delivery

The kit is vehicle-specific and replaces the original dampers and springs. We recommend having it fitted by an experienced mechanic. Please note: BC Racing specifies that the body shell must be reinforced before a True Rear kit is fitted. When ordering, make sure that this kit belongs with 3-bolt front top mounts. After setting the ride height, have the alignment set again; with three adjustment options it pays to tune the damping in small steps on a test day. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If BC Racing temporarily cannot supply the ZX, you can still order; we will let you know the expected delivery date.

The BC Racing ZX True Rear kit I-132-ZX for the BMW M3 F80 and M4 F82 with 3-bolt top mounts is 3-way adjustable: 20 clicks of low-speed compression, 12 clicks of high-speed compression and 30 clicks of rebound.

Why choose this ZX coilover kit M3 M4 F80 3-bolt True Rear?

With the ZX you set not only the rebound but also, separately, how the damper responds to slow body movements and to fast impacts from kerbs and bumps. This lets you tune an M3 or M4 precisely for long track sessions or drift work. True Rear gives the rear a complete strut as well, and because the dampers are rebuildable, you can have them rebuilt after intensive use.

BC Racing coilover kits for the BMW M3 F80 and M4 F82 True Rear with 3-bolt top mounts

Overview of the BC Racing series for the BMW M3 F80 and M4 F82 True Rear with 3-bolt top mounts supplied by Race4DriftParts, with the BC Racing part number. Spring rates in kg/mm, front/rear.

For the standard version of the BMW M3 F80 and M4 F82 without True Rear, BC Racing has separate kits. Their part numbers start with I-49 (3-bolt top mounts) and I-68 (5-bolt top mounts). The True Rear kits for 5-bolt top mounts start with I-133.

Frequently asked questions

Is the BC Racing ZX True Rear coilover kit I-132-ZX the right choice for my BMW M3 F80 or M4 F82?

Yes, if the front top mounts of your car are secured to the strut tower with 3 bolts. If there are 5 bolts, you need the I-133-ZX. If you are not sure, send us a photo of the strut tower or your chassis number.

Which versions of the BMW M3 F80 and M4 F82 does the BC Racing ZX True Rear coilover kit fit?

The M3 F80 Sedan and M4 F82 Coupe, model years 2014 to 2020, with rear-wheel drive and 3-bolt front top mounts. The M4 Convertible (F83) has not been confirmed; please contact us for that version.

What is the difference between the BC Racing ZX and ER True Rear coilover kits for the BMW M3 F80 and M4 F82?

The ZX is 3-way adjustable, the ER 2-way. Where you set compression and rebound each in 30 clicks on the ER, the ZX splits the compression into 20 clicks at low speed and 12 clicks at high speed. The ZX coilover kit M3 M4 F80 3-bolt True Rear is therefore intended for competition, long sessions and demanding drifting.

What is the delivery time of the BC Racing ZX True Rear coilover kit for the BMW M3 F80 and M4 F82?

You can expect 1 to 2 weeks as long as the manufacturer has stock. If the ZX is temporarily sold out, you can still order it and we will keep you informed.

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.