Unless you get a different temperature plug there is no difference in the spark between copper and iridium. It’s the length of time they last that makes them a good choice. Being a much harder material they don’t burn away so quickly. Therefore your gap remains correct for much longer maintaining optimum fuel burn and horsepower.

K1200 has one of the best and reliable engine in the world ... There is an italian guy that has a k1200s with over 500.000km and is going strong.

Hi, If you refill without vacuum you risk air voids and hot spots in the engine and near temperature sensor.

Thanks for the video. What brand are those mirrors? The original ones that came with the bike are not too good.

could have done with the torque setting of the drain plug when you put it back in. Otherwise, good information

Wear shop gloves mate

Go with original colour