Quick Summary
The Witter ZX203 is a bolt-on towball mounted bike rack for 3 bikes. It is designed for attachment to a 50 mm towball and includes a rear light board for 13-pin sockets. The stated maximum load is 51 kg.
This carrier uses two support arms and a cycle retaining strap to hold the bikes in place, and the wheel holders are adjustable. The rack can also tilt when loaded to allow access to the boot, although this is not applicable for van vehicles.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Product type | Bolt-on towball mounted bike rack for 3 bikes. |
| Maximum load | 51 kg maximum load, which is an important limit when planning the number and weight of bikes. |
| Maximum weight per bike | 17 kg per bike, so each cycle needs to stay within that limit. |
| Towball fit | Attaches to 50 mm towballs. |
| Lightboard connection | Supplied rear light board for 13-pin sockets. |
| Unladen weight | 15.1 kg. |
| Wheel and frame support | Two support arms, a cycle retaining strap and adjustable wheel holders. |
| Tyre and spacing limits | Max tyre width 8 cm, max distance between bike wheels 120 cm, distance between rails 17 cm. |
What to Compare Before Buying
- Load limits: Compare the stated 51 kg total limit and 17 kg per-bike limit with the bikes you plan to carry.
- Towball and socket type: This rack fits 50 mm towballs and includes a lightboard for 13-pin sockets, so the vehicle setup matters.
- Bike dimensions: Check tyre width, wheel spacing and wheelbase against the stated limits if you carry larger or unusual bikes.
- Boot access: The tilt function is useful if you need access to the boot while the carrier is fitted.
- Vehicle type: The tilt function is not applicable for van vehicles, so this matters if you plan to fit it to one.
Compatibility, Size and Fit
The ZX203 is intended for 50 mm towballs and uses a 13-pin lightboard connection. The adjustable wheel holders help with fit across common bike types, including children’s bikes, but the stated bike weight and wheel measurements still need to be checked against your cycles.
If your bikes are over 17 kg each, or if the tyre width, wheel spacing or wheelbase exceed the stated figures, a different rack may be more suitable.
What Is Included
- 1 x Witter ZX203 bike carrier
- Required adjuster screw
- Rear light board
The carrier is described as attachable to 50 mm towballs, and the 13-pin connection uses 8 of the 13 pins, with the other 5 left free.
Before You Decide
Confirm that your vehicle has a 50 mm towball and a 13-pin socket, and check that your bikes stay within the 51 kg total limit and 17 kg per-bike limit. Also make sure the tyre width, wheel spacing and wheelbase suit the rack before choosing it.
Remember that the tilt function is not applicable for van vehicles.






