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High-quality Bc Racing Er Coilovers Bmw 3 Series Coupe E46 (m3) 00-06 Series [eTfJrhHQ]

$73.99 $236.99 -69%

The ER Series brings you the same features seen on the BR and RM Series but with the additional benefit of external reservoirs. Plus you get the ability to make individual adjustments to compression and rebound damping rates so you can fine-tune your

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The ER Series brings you the same features seen on the BR and RM Series but with the additional benefit of external reservoirs. Plus you get the ability to make individual adjustments to compression and rebound damping rates so you can fine-tune your car's setup to perfection.

BC Racing ER Series offers separate compression and rebound damping adjustment. These coilovers include the high-quality and distinctive features found in both the BR and RM Series, with the added benefit of external reservoirs that allow for individual adjustment and setting of compression and rebound damping rates by the end user.

Fitment Info:

  • Front: External reservoir - inc. pillowball top mount
  • Rear: External reservoir - inc. pillowball top mount

Product Features:

  • 30 clicks of compression adjustment via the external reservoirs
  • 30 clicks of rebound adjustment from the top of the damper
  • Linear valving
  • Ride height adjustment separate to spring preload
  • Camber adjustable top mounts (depending on model)
  • Monotube damper design
  • Pillowball top mounts
  • Bearing mounted upper spring platform
  • Tapered bottom mount locking collar to prevent collar working loose
  • Custom spring rates available
  • All spare parts available with low lead times
  • Dust boot to protect the damper seal
  • 1 year manufacturer warranty

Please Note: Images depict the BC range and may not be indicative of the kit you purchase. 

  • Spring Rate (kg) : 8/N/A

Fitting Notes: Off-Center Top Mount Not Applicable To Hm/Zr

We can provide the full range of BC products including extra low or custom spring rates. If you can't see what you are looking for, just get in touch!

What Our Customers Say

January 7, 2026

Absolutely no complaints!

An outstanding tool. It feels extremely so very premium.

- Culhwch A..

January 7, 2026

Absolutely no complaints!

I'm happy with this. It is so very, so very great.

- Ysbaddaden D..

January 7, 2026

Absolutely no complaints!

A great product. And A++++++ service.

- Efnisien T..

Write a Review

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