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Description

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

The BC Racing RM coilover kit E90 E92 True Rear (part number I-118-RM-MA) 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 6 kg/mm front and 6 kg/mm rear.

The RM True Rear is the BC Racing kit for an E90 or E92 that does track days, hill climbs or tarmac rally. With the True Rear kit the spring sits around the damper at the rear, so you have a complete strut at the rear; with the standard I-03 kit the spring and damper remain separate at the rear, as from the factory.

On MacPherson struts the RM series uses an inverted monotube, on other suspension types an upright monotube. The digressive piston and fully synthetic oil with a very high viscosity index keep the damping stable; the springs are 6 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.
• Inverted monotube: on MacPherson struts, typical of the RM series.
• Fully synthetic oil: very high viscosity index, stable damping as things heat up.
• Digressive piston: firm at slow body movements.
• 30-click adjustment: compression and rebound together, per damper.
• Spring rate 6/6 kg/mm: the only True Rear kit for the E90 and E92 with 6 kg/mm at the front.
• Pillowball top mounts at the front: or camber plates, with rubber or the original mounting at the rear.
• 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).

• Track days and circuit work
• Hill climbs and tarmac rally
• E90 and E92 cars with a True Rear setup for intensive use

Technical specifications

• Manufacturer: BC Racing
• Part number: I-118-RM-MA
• Series: RM, for track days, hill climbs and tarmac rally
• Version: True Rear (integrated rear), a complete strut at the rear with the spring around the damper
• Spring rate front/rear: 6/6 kg/mm
• Damper design: inverted monotube on MacPherson struts, upright monotube on other suspension types, digressive piston, fully synthetic oil
• Damping: 30 clicks, compression and rebound simultaneously
• Ride height: continuously adjustable via the damper body
• Top mounts: pillowball top mounts or camber plates at the front, rubber or original mounting at the 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

The RM True Rear is vehicle-specific and 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. BC Racing advises periodic greasing of the RM and ZR series and recommends them less for road use than the BR, DS, ER or ZX. After setting the ride height, have the wheel alignment reset. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If BC Racing has no stock, you can still order; we will then tell you the expected delivery date.

The BC Racing I-118-RM-MA is the RM True Rear kit for the BMW E90 and E92 with rear-wheel drive, with fully synthetic oil and 6 kg/mm springs front and rear.

Why choose this RM coilover kit E90 E92 True Rear?

For hill climbs, tarmac rally or a busy track day calendar, you want damping that does not change as the dampers heat up. The RM delivers that with synthetic oil and a digressive piston, and with True Rear the spring also sits around the damper at the rear. Do allow for periodic greasing and for the body shell reinforcement that BC Racing specifies.

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 RM True Rear and the DS True Rear for the BMW E90 and E92?

The RM is aimed at track days, hill climbs and tarmac rally and uses fully synthetic oil; the DS is track-focused and BC Racing recommends it more readily for road use. The RM coilover kit E90 E92 True Rear has 6/6 kg/mm and pillowball top mounts at the front, the DS True Rear 5.5/6 kg/mm with pillowball top mounts front and rear.

Does the BC Racing RM True Rear coilover kit for the E90 and E92 need greasing?

Yes. BC Racing advises periodic greasing of the RM series and recommends it less for road use than the BR, DS, ER or ZX.

Does the BC Racing RM True Rear coilover kit fit a BMW E90 xDrive or E91 Touring?

No. This kit is intended for the E90 Sedan and E92 Coupe with rear-wheel drive, excluding the M3 and the xDrive (xi). For the E91 Touring and E93 Convertible, BC Racing has separate kits with I-17 numbers.

What is the delivery time of the BC Racing RM True Rear coilover kit for the BMW E90 and E92?

The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If it is briefly out of stock, you can still order 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.