This set of 4 NGK Racing Competition plugs are a competition replacement for the standard Golf 'R' Mk7, Leon Mk3 Cupra, TT-S Mk3 and S3 8V Spark Plugs.
These are recommended for customers running Stock or Stage 1 or beyond with an enthusiastic driving style and can handle a lot more grief than the stock plugs.
Contact us directly if you are unsure.