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Description

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

The BC Racing DS coilover kit M3 M4 F80 3-bolt (part number I-49-DS-DN) 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 DS series is BC Racing’s track-focused coilover kit. A digressive piston gives firmer damping at low piston speed, up to about 50 mm/s, so the M3 or M4 stays calmer when turning in, braking and accelerating. The damper body has a satin chrome finish.

For the F80 and F82, the DS comes in two versions, depending on the number of bolts that fix the front top mount in the strut tower. This kit fits the 3-bolt version, so take a quick look under the bonnet before you order, or ask us.

Key benefits

• Digressive piston: extra damping during slow body movements up to about 50 mm/s.
• 30-click damping adjustment: you set compression and rebound together, per damper.
• Ride height independent of spring preload: lowering without changing the spring preload.
• Spring rate 6/12 kg/mm: matched to the M3 F80 and M4 F82 with 3-bolt front top mount.
• Rubber or original top mounts: front and rear, code DN.
• Satin chrome damper body: with BC Racing’s concave lower lock ring.
• Rebuildable: the dampers can be rebuilt.
• Track-focused: for those who regularly do track days and also use the car on the road.

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.

• Regular track days with an M3 or M4
• Sporty road use with more control over the body
• A lower car while keeping the spring preload

Technical specifications

• Manufacturer: BC Racing
• Part number: I-49-DS-DN
• Series: DS, track-focused
• 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 digressive piston (firmer damping at 0 to 50 mm/s), satin chrome damper body
• 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 DN)
• 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 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, and check the number of bolts of the front top mount beforehand. After setting the ride height, a new wheel alignment is required, because camber and toe change. 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 it; we will let you know when it comes in.

The BC Racing DS kit I-49-DS-DN for the BMW M3 F80 and M4 F82 with 3-bolt front top mount combines a digressive piston with 6/12 kg/mm springs and 30-click damping.

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

On track you want an M3 or M4 to settle quickly after a steering input or at a hard braking point. That is exactly where the digressive DS piston provides its extra damping. Because the top mounts remain rubber or original, you can also simply drive it to the circuit and back home again.

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

Is the BC Racing DS coilover kit I-49-DS-DN suitable for both the BMW M3 F80 and the M4 F82?

Yes, provided the front top mount is fixed with 3 bolts. The kit is intended for the M3 F80 Sedan and the M4 F82 Coupe with rear-wheel drive, model years 2014 to 2020; BC Racing UK lists it under the M3 F80. The M4 F83 Convertible has its own BC Racing kits.

How do I check whether the BC Racing DS 3-bolt kit fits my BMW M3 F80 or M4 F82?

By counting the bolts on the front strut tower. If there are 3 bolts around the top mount, this DS coilover kit M3 M4 F80 3-bolt fits; if there are 5, choose the DS kit I-68-DS-DN. If you are not sure, contact us.

For the BMW M3 F80 or M4 F82, should I choose the BC Racing DS or the RM with 3-bolt top mount?

For combined road and track use, the DS is the logical choice. The RM (I-49-RM-MA) has 7/14 kg/mm and fully synthetic oil and is made for track days, hill climbs and tarmac rally; BC Racing recommends the RM less for road use than the DS.

How long does delivery of the BC Racing DS coilover kit for the BMW M3 F80 and M4 F82 take?

Allow 1 to 2 weeks as long as the manufacturer has stock. In the event of a temporary shortage, you can still order the kit and we will keep you informed of the delivery date.

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.