The wheels are manufactured to competition standard using a low pressure die cast system. and are fully heat treated. The alloy used is an LM9 derivative and the heat treatment process is to TB7. The wheels are powder coated and lacquered to the original period colour.

The wheels do not bear any marks on the outside face. The inner face shows the following information:

MIDDLEBARTONGARAGE.COM
COMPOMOTIVE.COM
PART NO.
PRODUCTION DATE/BATCH INFORMATION