In the area of ​​scooters with relatively low capacities and high revs, high demands are placed on the spark plugs. Overheating with the risk of jamming or fouling of the spark plug are frequent problems with the correct choice of spark plug. The spark plugs are available with different thermal values ​​(indicated as a figure in the code and the different from one manufacturer to another), materials (for example copper, silver, platinum) as well as in some standard unit sizes (which differ in terms of length, diameter and wire). Interference suppressed plugs are a good idea with non-interference suppressed plug sockets: the radio frequencies of cell phones, radios, etc. are not affected. They are not recommended with weak ignitions, however. Cooler spark plugs are suitable for racing cylinders and long distance use. In this context, the thermal sound output of the heat at the cylinder head takes place, there is a risk of soot, however. Hotter spark plugs are used in the sport and standard cylinders. The reach their operating temperature quickly, but can also overheat. Most scooter spark plugs have a SW M14x1.25 20.8 thread and are either long thread (19mm) or short thread (12.7mm). Please note: placing a long thread spark plug into a short thread cylinder head will damage the piston. We only stock high quality spark plugs from BOSCH, DENSO and NGK in our product range. BOSCH is a German manufacturer, while NGK and DENSO are Japanese. Conclusion: regular exchange / replacement is mandatory. Spare spark plugs belong in every luggage compartment. SIP TPP: a new ignition cable and a new spark plug socket at the same time. All required information on the spark plugs with a description of the heat value, spark plug designations, interference resistance and a comparison of the manufacturers is available both at www.sip-scootershop.com and as a PDF download. Additional candle types are also provided here. Copper candles are the most popular candles on the market and are a useful tool in everyday scooter life. Fast operating temperature, constant performance, optimal reaction during varying driving conditions, for example city driving, and last but not least, fuel economy are their advantage. The copper core of the center electrode conducts heat well and protects against thermal overload. Nickel-chromium alloy protects the copper core against corrosion and ensures high level of protection against wear and spark erosion.