Overview
The BC Racing ZX Series offers the highest level of adjustability within the BC Racing coilover system to date. Designed specifically for racing and track use, the ZX Series features 3-way adjustable damping force, providing 20 clicks of low-speed compression, 12 clicks of high-speed compression, and 30 clicks of rebound adjustment. The ZX Series adopts an upright cylinder design, allowing for the possibility of replacing the upper mount, while combining the excellent characteristics of the DS and ER series. Coupled with ultra-high viscosity index racing shock fluid, the ZX Series can maintain outstanding performance on the track and in drifting competitions for extended periods.
Key Features
- Digressive piston and damping curve
- Ultra-High viscosity index full synthetic shock fluid
- Mono-Tube
- 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
- Track-Orientated setup
- Fully rebuildable
- Default spring rate: 5.5/9 KG/MM
Compatibility
- Vehicle: BMW 435i/440i F32
- Chassis code: F32
- Series: ZX Series 3 Way Adjustment
- Year range: 2013-2020
- BC Racing part number: I-61-ZX
Installation Notes
Typically pre-LCI cars (2013-2015) use the 3-bolt top mount, whereas LCI cars (2015 onwards) typically use the 5-bolt top mount. Please check this on your own vehicle before purchasing.
Warranty & Support
This product is covered by a 1-year warranty against manufacturers defect.
Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.
It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.
We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.
We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.
All in stock products ship the same day if ordered before 2pm GMT
For out of stock items we will contact you with an estimated wait time if not otherwise specified above.
We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy
All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.
PLEASE NOTE
- Orders with both in-stock and backorder or out-of-stock products will be dispatched once all products are available to ship together.
- Contact our sales team if you want your parts fitted to your vehicle at our London workshop.
- Shipping estimates are based on courier delivery times and don't include time to despatch from our warehouse.


