This is a massively popular item and has already become the most asked about part that we produce.
These are an essential part for your GTB, GT14 or GT14b. You will have surely noticed that if you do up your wheels really tight, the wheels bind and become tight.
This is the answer. They sit in between the hub bearings on the axles and stop the bearings from being deformed when you tighten up the wheel nuts really tight.
The kit contains 4 crush tubes, one for each axle.