BC Racing ER Series Coilovers for the 2000-2005 Volkswagen Jetta (MK4) 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 MK4 chassis and refined until it balances ride quality with performance, the reason Golf R32 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. Where BC Racing separates itself is tuning philosophy: every off-the-shelf spring rate and damper setup is chosen to stay comfortable on daily roads while still delivering real performance at the track. If you want something different, Swift Springs, rates, and valving are all options at checkout, BC will match the valving of the dampers to whatever springs you pick, something most brands don”t offer outside their flagship race lineup.
Since 2000-2005, 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 ization options, and a damper design any suspension shop can rebuild instead of replacing. These Golf R32 coilovers arrive tuned for the MK4 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
Specifications
| Part Number | S-03-ER |
| Part Name | ER Series Coilovers |
| Vehicle | 2000-2005 Volkswagen Jetta |
| Drivetrain | AWD |
| Chassis Code | MK4 |
| Damping Adjustment | 2-Way (30 levels rebound/30 levels compression) |
| Ride-Height Adjustable | Yes |
| Spring Rate – Front | 6 kg/mm |
| Spring Rate – Rear | 10 kg/mm |
| Spring Size – Front | 62-180-6K |
| Spring Size – Rear | 62-130-10K-S |
| Swift Springs – Front | 62-178-X |
| Swift Springs – Rear | 62-127-X |
| Top Mounts – Front | Reuses OEM Mounts |
| Top Mounts – Rear | Eyelet |
| Rear Damping Extenders | Not Compatible |
| Suspension Design – Front | True Coilover |
| Suspension Design – Rear | Divorced |
| Notes |
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