Product Details

These BC Racing ER Series coilovers fit the 1991-2005 Acura NSX RWD (NA1/NA2). They put race-grade adjustability in reach of the serious track-day driver, with independent compression and rebound tuning at every corner. Every kit is developed specifically for the Acura NSX and refined to balance ride quality with performance, which is why BC coilovers are the best-selling adjustable kits in their segment worldwide.

ER Series kits run a linear twin-piston design in a mono-tube body, with compression and rebound on separate external adjusters. That lets you fine-tune chassis balance corner by corner, stiffer front for turn-in, softer rear for exit grip, whatever the session calls for. BC Racing takes pride in choosing spring rates and damper valving that balance comfort and performance, you never end up with the oversprung, harsh-riding kit some brands ship as their only option. Drivers who want to deviate from the factory setup can order Swift Springs, custom spring rates, and custom valving at checkout; BC will re-valve the dampers to match whatever you specify, a level of customization most brands reserve for their top-tier race kits.

BC Racing's reputation in the aftermarket suspension world is built on four things: competitive pricing that beats the rest of the fully-adjustable market, customization depth that rivals the top-tier race brands, long-term reliability earned over 20 years of production, and a rebuildable design that keeps the same set of dampers serving you through multiple builds. These BC Racing NSX coilovers arrive ready to bolt in, with no break-in period and no guessing at setup. Every kit ships with a 2-year manufacturer warranty, lifetime access to BC service parts (pistons, seals, shafts, no unit replacement required when it's time for a rebuild), and in-house tech support from both BC Racing and the Springrates team.

Features

  • 30-level rebound adjustment (top of damper)
  • 30-level compression adjustment (external reservoir)
  • Mono-tube damper with linear twin-piston design
  • Ride height adjustable independent of spring preload
  • Upper mount hardware varies by chassis, camber plates, pillowball, or reused OEM mounts. See the Specifications table for what's included on your kit.
  • Swift Spring and custom spring rate upgrades available at checkout
  • Custom damper valving paired with custom spring rates on request
  • Fully rebuildable, replacement parts available from BC for the life of the shock
  • 2-year manufacturer warranty against defects
Specifications
Part Number A-12-ER
Part Name ER Series Coilovers
Vehicle 1991-2005 Acura NSX
Drivetrain RWD
Chassis Code NA1/NA2
Damping Adjustment 2-Way (30 levels rebound/30 levels compression)
Ride-Height Adjustable Yes
Spring Rate - Front 10 kg/mm
Spring Rate - Rear 10 kg/mm
Spring Size - Front 62-180-10
Spring Size - Rear 62-180-10
Swift Springs - Front 62-178-X
Swift Springs - Rear 62-178-X
Top Mounts - Front Pillowball Mounts (no camber adjustment)
Top Mounts - Rear Pillowball Mounts (no camber adjustment)
Rear Damping Extenders Optional
Suspension Design - Front True Coilover
Suspension Design - Rear True Coilover
Notes
  • The ER Series is not available in Extreme-Low configuration.

Vehicle fitment

This product fits the vehicles listed below.

YearMakeModelDrivetrainNotes
1991AcuraNSXRWD
1992AcuraNSXRWD
1993AcuraNSXRWD
1994AcuraNSXRWD
1995AcuraNSXRWD
1996AcuraNSXRWD
1997AcuraNSXRWD
1998AcuraNSXRWD
1999AcuraNSXRWD
2000AcuraNSXRWD
2001AcuraNSXRWD
2002AcuraNSXRWD
2003AcuraNSXRWD
2004AcuraNSXRWD
2005AcuraNSXRWD

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