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Description

BMW F80/F82 M3/M4 3-bolt top mount (14-20) BC Racing BR coilover kit 6/12 kg/mm

The BC Racing BR coilover kit M3 M4 F80 3-bolt (part number I-49-BR-RN) is a coilover kit adjustable in height and damping, also simply called a coilover, for the BMW M3 F80 and M4 F82 with rear-wheel drive and front top mounts with 3 bolts, model years 2014 to 2020. The spring rate is 6 kg/mm front and 12 kg/mm rear.

The BR series is BC Racing’s all-rounder: monotube dampers with a linear piston, 30-click damping adjustment and a ride height that you set independently of the spring preload. This version is intended for an M3 or M4 that is mainly driven on the road and does the occasional track day or autocross.

BC Racing makes two versions for the M3 F80 and M4 F82, because on these cars the front top mount is fixed in the strut tower with either 3 or 5 bolts. This kit is for the 3-bolt version. Before ordering, count the bolts on top of the front strut tower under the bonnet, or send us a photo and we will take a look.

Key benefits

• Ride height independent of spring preload: lower the car while the spring keeps its preload.
• 30-click damping adjustment: you set compression and rebound per damper in a single step.
• Linear piston: damping that increases evenly with the speed of the wheel movement, pleasant on the road.
• Spring rate 6/12 kg/mm: for the M3 F80 and M4 F82 with a 3-bolt front top mount.
• Rubber or original top mounts: front and rear, recognisable by the code RN in the part number.
• Patented concave lower lock ring: holds the set height securely.
• Rebuildable: the dampers can be rebuilt.
• Road and track day: usable every day and ready for a day on track.

Suitable for

BMW M3 F80 Sedan and M4 F82 Coupe with rear-wheel drive, model years 2014 to 2020, with a front top mount fixed in the strut tower with 3 bolts. Not for cars with a 5-bolt front top mount (there are separate kits for those, I-68) and not for the M4 F83 Convertible, for which BC Racing makes its own kits.

• Daily driving with a lower, tighter M3 or M4
• The occasional track day or autocross
• Lowering without changing the spring preload

Technical specifications

• Manufacturer: BC Racing
• Part number: I-49-BR-RN
• Series: BR, all-round for the road and the occasional track day
• Version: for cars with a front top mount with 3 bolts (3-bolt FTM)
• Spring rate front/rear: 6/12 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: rubber or original mounting front and rear (code RN)
• 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

Fitting and delivery

The kit is vehicle-specific and replaces the original dampers and springs. We recommend having it fitted by an experienced mechanic. Check beforehand whether your car has a front top mount with 3 bolts. After adjusting the ride height, have the wheel alignment reset, 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 let you know the expected delivery date.

For the BMW M3 F80 and M4 F82 with a 3-bolt front top mount, BC Racing supplies the BR kit I-49-BR-RN with 6 kg/mm front, 12 kg/mm rear and 30-click damping adjustment.

Why choose this BR coilover kit M3 M4 F80 3-bolt?

The M3 F80 and M4 F82 send a lot of power to the rear axle, and a suspension that keeps the body calm helps to put that power down on the road. The BR gives you a lower car with less body roll and damping that you tune in 30 steps, while the rubber or original top mounts keep the kit suitable for daily use. If you mainly drive on the road and occasionally go on track, this kit is a good fit.

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

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

For the BMW M3 F80 and M4 F82 with 5-bolt top mounts, BC Racing has separate kits. Their part numbers start with I-68.

Frequently asked questions

Does the BC Racing BR coilover kit I-49-BR-RN fit a BMW M3 F80 and an M4 F82?

Yes. BC Racing Netherlands lists this kit for the M3 F80 Sedan and the M4 F82 Coupe with rear-wheel drive from 2014 to 2020, provided the front top mount is fixed with 3 bolts. BC Racing UK lists it under the M3 F80 in its overview. For the M4 F83 Convertible, BC Racing has separate kits.

How do I know whether my BMW M3 F80 or M4 F82 has a 3-bolt or 5-bolt top mount for the BC Racing BR?

Count the bolts of the top mount on top of the front strut tower under the bonnet. If you see 3, this BR coilover kit M3 M4 F80 3-bolt is the right one; with 5 bolts you need the BR kit I-68-BR-RN. If in doubt, send us a photo or contact us and we will check it for you.

What is the difference between the BC Racing BR and DS for the BMW M3 F80 and M4 F82 with 3-bolt top mount?

The BR has a linear piston and is made for the road with the occasional track day. The DS (I-49-DS-DN) uses a digressive piston that gives firmer damping during slow body movements and is more track-focused. Both have 6/12 kg/mm and rubber or original top mounts.

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

The delivery time is 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.