Description
BMW 3 SERIES SEDAN (3-BOLT) (Rear Integrated) RWD F30 (12-19) BC Racing ZX Series Coilovers | 5.5/5.5kg.mm
The BC Racing ZX Series Coilovers deliver precise suspension tuning for the BMW 3 SERIES SEDAN (3-BOLT) (Rear Integrated) RWD F30 (12-19), featuring a 5.5/5.5kg.mm spring rate that balances responsive handling with everyday comfort. These adjustable coilovers enable independent control of ride height and damping, allowing you to fine-tune your F30's suspension geometry for both road and track applications. With BC Racing's reputation for quality construction and performance reliability, the ZX Series represents a proven choice for BMW enthusiasts seeking professional-grade suspension upgrades.
BC Racing ZX Series Coilovers
The BC Racing ZX Series is designed specifically for racing and track use. The series features 3-way adjustable damping with 20 clicks of low-speed compression, 12 clicks of high-speed compression and 30 clicks of rebound adjustment. The ZX adopts an upright damper design, allowing the possibility of replacing the upper mount. The added volume provided by the external canister combined with ultra-high viscosity index racing shock fluid means the ZX Series can maintain outstanding performance on track and in drifting competitions for extended periods.
Key Features
- Digressive piston and damping curve
- Ultra-high viscosity index full synthetic shock fluid
- Monotube damper design
- 3-way adjustable damping control
- 30 clicks of rebound adjustment
- 20 clicks of low-speed compression adjustment
- 12 clicks of high-speed compression adjustment
- Dual piston design
- External canister for increased oil volume
- Custom spring rates available
- Fully rebuildable
- 1 year warranty against manufacturer defect
3-Way Damping Adjustment
Independent control of rebound, low-speed compression and high-speed compression allows each circuit to be tuned without affecting the others. Low-speed compression controls body movement under driven loads. High-speed compression controls the response to sharp, abrupt inputs such as kerbs and surface changes. Rebound controls suspension extension after compression — critical for weight transfer management and traction on corner exit.
Kit Specifications
- Fitment: BMW 3 SERIES SEDAN (3-BOLT) (Rear Integrated) RWD F30 (12-19)
- Spring Rate: 5.5/5.5kg.mm
- 3-Way Adjustable Damping — 30 Rebound / 20 Low-Speed Compression / 12 High-Speed Compression
- Monotube Damper Design
- Full Ride Height Adjustment (via Bottom Mount)
- Adjustable Spring Platforms for Corner Weighting
- Tapered Bottom Mount Locking Collar
- Custom Spring Rates Available
- All Spare Parts Available
- 1 Year Manufacturer Warranty
Fitment Data
| Chassis | BMW 3 SERIES SEDAN (3-BOLT) (Rear Integrated) RWD F30 (12-19) |
| Series | ZX |
| Spring Rate | 5.5/5.5kg.mm |
| Part Number | I-136-ZX |