S3 cylinder head for high compression TRS to improve high speed response. In case of selecting the 300cc displacement, the BPR5ES spark plug must be installed (not included). The cylinder head is installed on the original TRRS cylinder head.
Original product S3

No question is available on this product.
But if in case you have any doubt you can raise your query.
Combine it with
Related products
Need help choosing or can't find what you're looking for? We'll help you or get it for you!