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Description

BMW E90/E92 M3 Sedan/Coupe without EDC (06-13) BC Racing RM coilover kit 8/14 kg/mm

The BC Racing RM coilover kit M3 E92 (part number I-39-RM-MA) 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 8 kg/mm front and 14 kg/mm rear.

BC Racing aims the RM series at track days, hill climbs and tarmac rally. In the version for the M3 E90 and E92 without EDC, the springs are 8 kg/mm front and 14 kg/mm rear, noticeably firmer than on the BR and DS for this car.

On the RM, BC Racing uses an inverted monotube on MacPherson struts and an upright monotube on other suspension types, with a digressive piston and fully synthetic oil with a very high viscosity index. You adjust the damping in 30 clicks.

Key benefits

• For track days, hill climbs and tarmac rally: the RM is geared towards track use.
• Spring rate 8/14 kg/mm: firmer than the BR and DS kits for the M3 without EDC.
• Fully synthetic oil: with a very high viscosity index.
• Digressive piston: tuned for the track.
• Inverted monotube on MacPherson struts: upright monotube on other suspension types.
• 30-click damping adjustment: compression and rebound together.
• Pillowball top mounts or camber plates at the front: rubber or the original mounting at the rear.
• 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

• Track days with an M3 E90 or E92
• Hill climbs and tarmac rally
• M3s that rarely see the road

Technical specifications

• Manufacturer: BC Racing
• Part number: I-39-RM-MA
• Series: RM, for track days, hill climbs and tarmac rally
• Version: for the M3 without EDC (electronic damper control)
• Spring rate front/rear: 8/14 kg/mm
• Damper design: inverted monotube on MacPherson struts, upright monotube on other suspension types; digressive piston; fully synthetic oil with a very high viscosity index
• Damping: 30 clicks, compression and rebound simultaneously
• Ride height: infinitely adjustable via the damper body
• 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

The kit is vehicle-specific and replaces the original dampers and springs. We recommend having it fitted 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. 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. According to BC Racing UK, this version may require a plug-in kit to prevent an error message; feel free to ask us for advice. After adjusting the height, have the wheel alignment reset. The delivery time is 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 let you know the delivery date.

The BC Racing RM kit I-39-RM-MA for the BMW M3 E90 and E92 without EDC has springs of 8 kg/mm front and 14 kg/mm rear and works with fully synthetic oil.

Why choose this RM coilover kit M3 E92?

The RM is intended for an M3 that is mainly driven on track, at a hill climb or on a tarmac rally. The firmer springs and the digressive damping with synthetic oil suit that use. If your M3 is mainly driven on the road, the BR or DS is a better choice, because BC Racing recommends the RM less for road use.

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 RM and DS coilover kits for the BMW M3 E92 without EDC?

The RM has springs of 8/14 kg/mm and synthetic oil and is intended for track days, hill climbs and tarmac rally; the DS has 6/10 kg/mm and is also suitable for sporty road use. Both have a digressive piston and 30 clicks. BC Racing advises periodic greasing of the RM.

Is the BC Racing RM coilover kit I-39 suitable for an M3 E90/E92 with EDC?

No, the I-39-RM-MA is for the M3 without EDC. For M3s with EDC, Race4DriftParts supplies kits with an I-13 part number (BR, DS, ER, ZX and ZR), for which BC Racing prescribes an EDC delete kit that BC Racing does not sell. You can usually tell whether your M3 has EDC by the EDC button on the centre console; if in doubt, contact us.

Does the BC Racing RM coilover kit I-39 fit the M3 Sedan, Coupe and Convertible?

Only the Sedan and Coupe. BC Racing releases the kit for the M3 E90 Sedan (2006 to 2013) and the M3 E92 Coupe (2007 to 2013) without EDC; for the M3 Convertible E93 there are separate kits.

Can you use the BC Racing RM coilover kit for daily driving in an M3 E92?

Not as a first choice. BC Racing recommends the RM series less for road use than the BR, DS, ER or ZX and advises periodic greasing. The RM coilover kit M3 E92 is made for track days, hill climbs and tarmac rally.

What is the delivery time of the BC Racing RM coilover kit for the M3 without EDC?

The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If the kit is temporarily unavailable, you can still order it and we will let you know when it arrives.

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.