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Description

BMW E90/E92 M3 True Rear Sedan/Coupe (06-13) BC Racing DS coilover kit 6/6 kg/mm

The BC Racing DS coilover kit M3 E92 True Rear (part number I-117-DS-DH) is a coilover kit adjustable in height and damping, also simply called a coilover, for the BMW M3 E90 and E92, with or without EDC, model years 2006 to 2013, in True Rear version. The spring rate is 6 kg/mm front and 6 kg/mm rear.

The DS series is the track-focused coilover kit from BC Racing, and in this True Rear version the M3 E90 or E92 also gets a strut with the spring around the damper at the rear. The kit is made for an M3 that is regularly on track but is also still driven on the road.

The heart of the kit is a monotube damper with a digressive piston in a satin chrome damper body. That piston damps more firmly at slow movements from 0 to 50 mm/s, so the body stays calmer on turn-in and under braking. Front and rear there are pillowball top mounts or camber plates.

Key benefits

• Digressive piston: firmer damping at slow body movements (0 to 50 mm/s).
• True Rear version: a complete strut at the rear instead of a separate spring and damper.
• Satin chrome damper body: the recognition point of the DS series.
• Ride height independent of spring preload: adjustable front and rear independently of the spring.
• 30-click damping adjustment: compression and rebound together, per damper.
• Pillowball top mounts front and rear: or camber plates, with a direct link to the body.
• Concave lower lock ring: the height stays fixed.
• Rebuildable: the dampers can be rebuilt.

Suitable for

BMW M3 E90 Sedan and M3 E92 Coupe, rear-wheel drive, model years 2006 to 2013, with or without EDC (with EDC an EDC delete kit is required, not included); True Rear version; not for the M3 E93 Convertible

• Regular track days with the M3 E90 or E92
• Sporty road use with a track-focused setup
• A build with a complete strut at the rear as well

Technical specifications

• Manufacturer: BC Racing
• Part number: I-117-DS-DH
• Series: DS, track-focused
• Version: True Rear, a strut with the spring around the damper at the rear as well; with EDC an EDC delete kit is required, not included
• Spring rate front/rear: 6/6 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 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; noise from track use is not covered by the warranty

Fitting and delivery

This vehicle-specific kit replaces the original dampers and springs all round. We recommend having it fitted by an experienced mechanic. Please note: BC Racing specifies that with a True Rear kit the body shell must be reinforced before fitting. BC Racing UK also reports that pillowball top mounts can transmit noise to the body in this application. For an M3 with EDC, BC Racing specifies an EDC delete kit; it is not part of the kit and is not supplied by BC Racing. Check the wheel alignment after setting the height, because camber and toe shift as well. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If it is temporarily not in stock, you can still order and we will let you know when it is coming.

The BC Racing DS kit I-117-DS-DH for the BMW M3 E90 and E92 combines a digressive piston with True Rear struts at the rear and pillowball top mounts front and rear.

Why choose this DS coilover kit M3 E92 True Rear?

An M3 on track needs damping that keeps the body under control without making the car nervous. The digressive piston of the DS works precisely at slow movements, and with the True Rear setup you also set height and damping yourself at the rear. That way you build an M3 that belongs on track and remains usable on the road.

BC Racing coilover kits for the BMW M3 E90/E92 True Rear

Overview of the BC Racing series for the BMW M3 E90/E92 True Rear supplied by Race4DriftParts, with the BC Racing part number. Spring rates in kg/mm, front/rear.

For the standard version without True Rear, with the original separate spring and damper at the rear, BC Racing has separate kits for the M3 E90 and E92. Their part numbers start with I-13 (with EDC) or I-39 (without EDC).

Frequently asked questions

Is the BC Racing DS True Rear kit I-117 suitable for the BMW M3 E90 Sedan and E92 Coupe with EDC?

Yes, BC Racing releases the kit for the M3 E90 Sedan and E92 Coupe from 2006 to 2013, with or without EDC. If your M3 has EDC, an EDC delete kit is required, which is not included in the kit. The M3 E93 Convertible is excluded; there are separate BC Racing kits for it.

Should I choose the BC Racing DS or the RM True Rear kit for my BMW M3 E92?

Choose the DS if your M3 is also regularly driven on the road, and the RM if it is mainly used for track days, hill climbs or tarmac rally. The DS coilover kit M3 E92 True Rear has pillowball top mounts front and rear, the RM pillowball top mounts at the front and rubber or the original mounting at the rear. BC Racing advises periodic greasing of the RM and recommends it less for the road.

Why does the BC Racing DS True Rear kit for the M3 E92 require a reinforced body shell?

Because BC Racing specifies this for this True Rear kit: the body shell must be reinforced before fitting. With True Rear the spring also sits around the damper at the rear, whereas the M3 has a separate spring and damper from the factory. Have the reinforcement and fitting carried out by an experienced mechanic.

How long does delivery of the BC Racing DS True Rear kit for the BMW M3 E90 and E92 take?

Normally 1 to 2 weeks as long as the manufacturer has stock. If BC Racing briefly does not have the kit in stock, 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.