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The honeycomb texture option was a hit in the M2 enthusiast community
when higher revs are hit and the valves are permanently open
BMW M240i 2017-
the MMR solution is simply bolted into place making the addition of the baffle considerably easier and more accessible to install
NGK 97506 1 Step Colder Spark Plugs - BMW N55 | S55 | S63 Amount Required:8 The honeycomb texture option wasWhen tuning your BMW N55, S55, S63TU it is recommended to go with 1 step colder spark plugs for a more efficient spark. These do not come pre gapped for tunes but we can gap them for you before shipping to suit your specific tune. Choose your option from the dropdown above prior to payment. *If you would like to gap the plugs yourself, choose ungapped in the dropdown.