NEW Aluminum Big Brake Calipers for the Vented Opel big brake system. A good upgrade for ALL Opels that require better cooling for multiple high speed stops. About half the weight of cast iron brake calipers. Sold as a pair Right and Left. Sold unloaded. See part numbers 4010 pads and 4067 pad mounting hardware to complete the caliper. Fits the vented rotor set 4002v. NOTE: The front wheel hub outside diameter will need to be machined down for clearing the caliper. May not work with some wheels unless a spacer is installed.