BC Racing HM Series Coilovers for the 1999 BMW 323i Coupe combine the inverted-damper durability of the RM Series with the independent compression and rebound tuning of the ER Series, BC”s pick for track-day McPherson-strut builds. Every kit is extensively tested on the 323i Coupe chassis and refined until it balances ride quality with performance, the reason 323i Coupe coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide.
HM Series kits use an inverted mono-tube damper on McPherson-strut chassis (upright on double-wishbone) with external reservoirs feeding separate compression and rebound adjusters. The result: the tuning depth of the ER Series inside the heavy-load chassis architecture of the RM. 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.
BC Racing has been manufacturing adjustable coilovers since 2004 and is one of the most popular coilover brands in the automotive tuning industry for a reason: competitive pricing, deep ization, proven reliability, and a fully rebuildable damper design that lasts years instead of seasons. These 323i Coupe coilovers arrive tuned for the 323i Coupe 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 | I-120-HM |
| Part Name | HM Series Coilovers |
| Vehicle | 1999 BMW 323i Coupe |
| Drivetrain | RWD |
| Chassis Code | E36 |
| Damping Adjustment | 2-Way (30 levels rebound/30 levels compression) |
| Ride-Height Adjustable | Yes |
| Spring Rate – Front | 6 kg/mm |
| Spring Rate – Rear | 6 kg/mm |
| Top Mounts – Front | Camber Plates |
| Top Mounts – Rear | Pillowball Mounts (no camber adjustment) |
| Rear Damping Extenders | Not Compatible |
| Suspension Design – Front | True Coilover |
| Suspension Design – Rear | True Coilover |
| Notes |
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