Product Details

BC Racing ER Series Coilovers for the 1995-1998 Nissan 240SX (S14) put race-grade adjustability in reach of the serious track-day driver, with independent compression and rebound tuning at every corner. Every kit is extensively tested on the S14 chassis and refined until it balances ride quality with performance — the reason 240SX coilovers from BC Racing 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. The off-the-shelf setup from BC Racing is deliberately balanced — spring rates and valving chosen so the kit feels comfortable day-to-day without giving up performance when you push it. Drivers who want a different recipe can spec Swift Springs, custom spring rates, or fully custom valving at checkout; BC will tune the dampers to match, which is a depth of customization most brands only offer on their top-tier kits.

Since 2004, BC Racing has grown into one of the most trusted names in aftermarket coilovers — not by racing to the bottom on price, but by pairing that price with real build quality, deep customization options, and a damper design any suspension shop can rebuild instead of replacing. These 240SX coilovers arrive tuned for the S14 chassis and ready to bolt in — no break-in period, 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 D-14-ER
Part Name ER Series Coilovers
Vehicle 1995-1998 Nissan 240SX
Drivetrain RWD
Chassis Code S14
Damping Adjustment 2-Way (30 levels rebound/30 levels compression)
Ride-Height Adjustable Yes
Spring Rate - Front 6 kg/mm
Spring Rate - Rear 4 kg/mm
Spring Size - Front 62-180-6K
Spring Size - Rear 62-230-4K
Swift Springs - Front 62-178-X
Swift Springs - Rear 62-228-X
Camber Plates - Front Included
Camber Plates - Rear Not Applicable
Suspension Design - Front True Coilover
Suspension Design - Rear True Coilover
Notes
  • Silvia 240SX
  • The ER Series is not available in Extreme-Low configuration.
Vehicle Fitment
  • 1995 Nissan 240SX RWD (S14)
  • 1996 Nissan 240SX RWD (S14)
  • 1997 Nissan 240SX RWD (S14)
  • 1998 Nissan 240SX RWD (S14)
5.0
Rated 5.0 out of 5 stars
Based on 1 review
100%would recommend this product
1 review
  • JJ
    Jovan j G.
    Flag of United States
    Verified Buyer
    Rated 5 out of 5 stars
    5 Stars

    The er series of coil overs he’s super sick easy to use and very simple to install. By getting together with spring rates they help me to find the right Swiss Spring for my rear and front Coil overs. Leaving here in how are you we have no track so my coil overs were designed for street use. All dialed in by 240 rides like a Cadillac. But he’s super agile and I still can drift on the streets. BC ER coil overs to me or one of the best coil over systems for Wise fab. I read this coil over 10 out of 10 and the service from spring rates is incredible

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