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Description

BMW F80/F82 M3/M4 5-bolt True Rear (14-20) BC Racing BR coilover kit 6/6 kg/mm

The BC Racing BR coilover kit M3 M4 F80 5-bolt True Rear (part number I-133-BR-RH) 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 5 bolts, model years 2014 to 2020, in True Rear version. The spring rate is 6 kg/mm front and 6 kg/mm rear.

This BR kit is intended for an M3 F80 or M4 F82 whose front top mounts are secured to the strut tower with 5 bolts. The BR series is BC Racing’s all-rounder: monotube dampers with a linear piston, 30 clicks for compression and rebound together and a ride height that you set independently of the spring preload.

As a True Rear version, the kit also gives the rear a complete strut with the spring around the damper, whereas spring and damper remain separate at the rear on the standard BC Racing kits for these cars. With 6 kg/mm front and rear and pillowball top mounts all round, the M3 or M4 remains usable on the road and ready for a track day. If your car has 3-bolt top mounts, choose the I-132-BR-RH.

Key benefits

• 5-bolt front top mounts: the version for the M3 F80 and M4 F82 with this mounting.
• True Rear: spring and damper together in one coilover at the rear.
• Pillowball top mounts all round: or camber plates, front and rear.
• Linear monotube damping: predictable and easy to set up.
• 30-click adjustment: compression and rebound simultaneously, per damper.
• Height independent of the preload: lower the car while the spring keeps its preload.
• Springs of 6 kg/mm: the same front and rear.
• Patented concave lock ring: locks the chosen height in place.
• 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 5 bolts, in True Rear version. If the front top mounts are secured with 3 bolts, choose the I-132 kit. The M4 Convertible (F83) is not listed by BC Racing; please contact us for that version.

• An M3 or M4 that is mainly driven on the road
• Track days and autocross in between
• Lowering while the spring preload stays the same

Technical specifications

• Manufacturer: BC Racing
• Part number: I-133-BR-RH
• Series: BR, all-round for road and track
• 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 5 bolts
• Spring rate front/rear: 6/6 kg/mm
• Damper design: monotube with linear piston
• Damping: 30 clicks, compression and rebound simultaneously
• Ride height: adjustable via the damper body, independent of the spring preload
• Top mounts: pillowball top mounts or camber plates front and rear
• 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

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. This kit is for the 5-bolt front top mount; count the bolts on the strut tower before you order. After adjusting the ride height, a new wheel alignment is needed, because camber and toe change as well. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If BC Racing temporarily does not have the kit in stock, you can still order and we will keep you informed of the delivery date.

For the BMW M3 F80 and M4 F82 with 5-bolt front top mounts, BC Racing supplies the BR True Rear kit I-133-BR-RH, with 6/6 kg/mm springs and 30-click damping adjustment.

Why choose this BR coilover kit M3 M4 F80 5-bolt True Rear?

The BR is the kit for anyone who mainly drives their M3 or M4 on the road but wants a tighter, adjustable suspension. With True Rear you also adjust the ride height at the rear via the coilover kit, and the linear damping in 30 steps keeps setting up straightforward. Because the dampers are rebuildable, you can have them rebuilt after years of use.

BC Racing coilover kits for the BMW M3 F80 and M4 F82 True Rear with 5-bolt top mounts

Overview of the BC Racing series for the BMW M3 F80 and M4 F82 True Rear with 5-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-68 (5-bolt top mounts) and I-49 (3-bolt top mounts). The True Rear kits for 3-bolt top mounts start with I-132.

Frequently asked questions

How do I know whether my BMW M3 F80 or M4 F82 needs the BC Racing BR True Rear kit for 3-bolt or 5-bolt top mounts?

Count the number of bolts securing the front top mount on top of the strut tower. With 5 bolts, the BR coilover kit M3 M4 F80 5-bolt True Rear (I-133-BR-RH) is the right choice; with 3 bolts, the I-132-BR-RH. If you cannot see this yourself, send us a photo or your chassis number.

Is the BC Racing BR True Rear coilover kit I-133-BR-RH for the M3 F80 and M4 F82 also suitable for the BMW M4 Convertible F83?

That has not been confirmed. For this kit, BC Racing lists the M3 F80 Sedan and M4 F82 Coupe with rear-wheel drive, model years 2014 to 2020, with 5-bolt front top mounts. For an M4 Convertible (F83), please contact us.

What is the difference between the BC Racing BR and DS True Rear coilover kits for the BMW M3 F80 and M4 F82 with 5-bolt top mounts?

The DS has a digressive piston and is more track-focused, the BR has a linear piston for the road with the occasional track day. During slow body movements the DS damps more firmly. Spring rate (6/6 kg/mm) and top mounts are the same on both kits.

What is the delivery time of the BC Racing BR True Rear coilover kit for the BMW M3 F80 and M4 F82 with 5-bolt top mounts?

Normally 1 to 2 weeks as long as the manufacturer has stock. If the kit is temporarily sold out, you can still order it and we will let you know when it comes in.

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.