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Description

BMW E90/E92 M3 Sedan/Coupe without EDC (06-13) BC Racing DS coilover kit 6/10 kg/mm

The BC Racing DS coilover kit M3 E92 (part number I-39-DS-DA) is a coilover kit adjustable in height and damping, also simply called a coilover, for the BMW M3 E90 and E92 without EDC, model years 2006 to 2013. The spring rate is 6 kg/mm front and 10 kg/mm rear.

The DS is BC Racing’s track-focused coilover kit, here in the version for the M3 E90 and E92 without EDC. It has the same springs as the BR, 6 kg/mm front and 10 kg/mm rear, but a monotube damper with a digressive piston.

That piston damps more firmly during slow body movements between 0 and 50 mm/s, which you notice when turning in and braking on track. You set the damping in 30 clicks and the ride height independently of the spring preload.

Key benefits

• Digressive piston: more damping during slow movements from 0 to 50 mm/s.
• Track-focused: for regular track days and sporty road use.
• 30-click damping adjustment: compression and rebound in a single adjustment.
• Height independent of spring preload: lower the car without changing the spring preload.
• Spring rate 6/10 kg/mm: the same as the BR for the M3 without EDC.
• Pillowball top mounts or camber plates at the front: with rubber or the original mounting at the rear.
• Satin chrome damper body: the recognisable DS finish.
• Rebuildable: the dampers can be rebuilt.

Suitable for

BMW M3 E90 Sedan (2006 to 2013) and M3 E92 Coupe (2007 to 2013) without EDC (electronic damper control); not for the M3 with EDC, the M3 Convertible E93 and the non-M 3 Series

• Regular track days with an M3 E90 or E92
• Sporty road use with track-focused damping
• An M3 that needs to turn in more calmly

Technical specifications

• Manufacturer: BC Racing
• Part number: I-39-DS-DA
• Series: DS, track-focused
• Version: for the M3 without EDC (electronic damper control)
• Spring rate front/rear: 6/10 kg/mm
• Damper design: monotube with digressive piston, 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: pillowball top mounts or camber plates at the front, rubber or original mounting at the rear
• 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

This coilover kit is specific to the M3 E90 and E92 without EDC and replaces the original dampers and springs. Preferably have it installed by an experienced mechanic. On some cars the pillowball top mount at the front requires a small modification to the upper mounting; if in doubt, contact us. According to BC Racing UK, a plug-in kit may be needed with this version to prevent an error message; feel free to ask us for advice. After setting the height, a new wheel alignment is needed. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If the manufacturer does not have it in stock, you can still order and we will let you know when the kit has arrived.

The BC Racing I-39-DS-DA is the DS coilover kit for the BMW M3 E90 and E92 without EDC, with a digressive monotube damper and 6/10 kg/mm springs.

Why choose this DS coilover kit M3 E92?

The DS is the logical step if your M3 spends more time on track than an average road car. With the same springs as the BR but a digressive piston, you keep the body calmer during quick changes of direction, without choosing a stiffer spring. The 30 clicks let you adjust the damping per circuit or per drive.

BC Racing coilover kits for the BMW M3 E90/E92 without EDC

Overview of the BC Racing series for the BMW M3 E90/E92 without EDC supplied by Race4DriftParts, with the BC Racing part number. Spring rates in kg/mm, front/rear.

For the BMW M3 E90/E92 with EDC, BC Racing has separate kits. Their part numbers start with I-13.

Frequently asked questions

What is the difference between the BC Racing DS and RM coilover kits for the BMW M3 E92 without EDC?

The DS is track-focused but also suitable for sporty road use and has springs of 6/10 kg/mm; the RM is intended for track days, hill climbs and tarmac rally and has 8/14 kg/mm. The RM uses fully synthetic oil and, according to BC Racing, requires periodic greasing. For combined road and track use, the DS coilover kit M3 E92 is the logical choice.

Do I need the BC Racing DS kit I-39 or I-13 for my M3 E90/E92?

That is determined by the EDC: if your M3 has no electronic damper control, the I-39-DS-DA is the right one; with EDC you choose the I-13-DS-DA, which also requires an EDC delete kit that BC Racing does not sell. An EDC button on the centre console usually indicates EDC; if in doubt, contact us.

Is the BC Racing DS coilover kit I-39 suitable for the M3 E93 Convertible?

No. BC Racing releases this kit for the M3 E90 Sedan and the M3 E92 Coupe without EDC. For the M3 Convertible E93 there are separate BC Racing kits.

Is noise from the BC Racing DS coilover kit on an M3 covered by the warranty?

No, noise from track use is not covered by the DS warranty. The warranty is 1 year on manufacturing defects.

How long does delivery of the BC Racing DS coilover kit for the M3 without EDC take?

1 to 2 weeks, as long as the manufacturer has stock. If BC Racing does not have the kit in stock, you can still order and we will pass on the expected 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.