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Description

BMW E90/E92 3 Series True Rear Sedan/Coupe RWD (05-11) BC Racing DS coilover kit 5.5/6 kg/mm

The BC Racing DS coilover kit E90 E92 True Rear (part number I-118-DS-DH) is a coilover kit adjustable in height and damping, also simply called a coilover, for the BMW 3 Series E90 Sedan and E92 Coupe with rear-wheel drive, excluding the M3, model years 2005 to 2011, in True Rear version. The spring rate is 5.5 kg/mm front and 6 kg/mm rear.

The DS True Rear for the BMW E90 and E92 combines track-focused damping with a complete strut at the rear. With the True Rear kit the spring sits around the damper at the rear, just as at the front; with the standard I-03 kit the spring and damper remain separate at the rear, as from the factory.

The monotube dampers have a digressive piston, which damps more firmly at slow body movements between 0 and 50 mm/s, and a satin chrome damper body. Front and rear there are pillowball top mounts or camber plates; the springs are 5.5 kg/mm front and 6 kg/mm rear.

Key benefits

• True Rear: a complete strut at the rear as well, with the spring around the damper.
• Digressive piston: firm damping at slow body movements between 0 and 50 mm/s.
• Pillowball top mounts front and rear: or camber plates, for a direct connection all round.
• 30-click adjustment: compression and rebound together, per damper.
• Ride height independent of spring preload: you change the height without changing the spring preload.
• Spring rate 5.5/6 kg/mm: the same as the BR, ER and ZX True Rear.
• Satin chrome damper body and concave lock ring: recognisable DS look and a securely locked height.
• Rebuildable: the dampers can be rebuilt.

Suitable for

BMW 3 Series E90 Sedan and E92 Coupe with rear-wheel drive, model years 2005 to 2011, in True Rear version; not for the M3 and not for the xDrive (xi) with four-wheel drive. For the E91 Touring and E93 Convertible, BC Racing has separate kits (I-17).

• Regular track days
• Sporty road use with plenty of steering feel
• E90 and E92 cars with a track-focused True Rear setup

Technical specifications

• Manufacturer: BC Racing
• Part number: I-118-DS-DH
• Series: DS, track-focused
• Version: True Rear (integrated rear), a complete strut at the rear with the spring around the damper
• Spring rate front/rear: 5.5/6 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. 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. Plan a wheel alignment after setting the ride height, especially if you use the camber plates. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If the kit is temporarily out of stock at BC Racing, you can still order and we will keep you informed of the delivery date.

The BC Racing I-118-DS-DH is a track-focused True Rear coilover kit for the BMW E90 and E92 with digressive monotube dampers and pillowball top mounts front and rear.

Why choose this DS coilover kit E90 E92 True Rear?

If you regularly do track days with your E90 or E92, the digressive piston of the DS gives more control over the body at slow movements, such as on turn-in and under braking. With True Rear and pillowball top mounts all round, you get a direct connection between suspension and body. Take into account the body shell reinforcement that BC Racing specifies before fitting.

BC Racing coilover kits for the BMW E90 Sedan and E92 Coupe True Rear

Overview of the BC Racing series for the BMW E90 Sedan and E92 Coupe 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, BC Racing has separate kits for the E90 Sedan and E92 Coupe. Their part numbers start with I-03.

Frequently asked questions

What is the difference between the BC Racing DS True Rear and the BR True Rear for the BMW E90 and E92?

The difference is in the piston: the DS has a digressive piston and is track-focused, the BR a linear piston for mainly road use. Springs (5.5/6 kg/mm), pillowball top mounts front and rear and the True Rear setup are the same. If you often go on track, the DS coilover kit E90 E92 True Rear is the better fit.

What does True Rear mean on the BC Racing DS coilover kit for the E90 and E92?

True Rear means that the spring also sits around the damper at the rear, so you have a complete strut at the rear. With the standard DS kit for this car (I-03-DS-DA) the spring and damper remain separate at the rear, as from the factory, and the spring rate is 5.5/8 kg/mm. BC Racing UK calls this version an integrated rear.

Does the BC Racing DS True Rear coilover kit fit every BMW E90 and E92?

No. The kit fits the E90 Sedan and E92 Coupe with rear-wheel drive, but not the M3 and the xDrive (xi). For the E91 Touring and E93 Convertible, BC Racing has its own kits (I-17). BC Racing also specifies a reinforced body shell for this kit.

How quickly is the BC Racing DS True Rear coilover kit for the BMW E90 and E92 delivered?

Within 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 and we will let you know 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.