Spark Plug NGK Racing GR4

Reference GR4

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Choose a quality product with the GR4 NGK spark plug, optimised for better performance and a longer service life. NGK is the world's leading manufacturer of spark plugs with a comprehensive range for all engines and applications. The brand equips 90% of the major manufacturers. This range of motorbike spark plugs is identical to the original version.

To unscrew your spark plug, you will need a 23,8 mm spanner, reference .. Remember to select the size 😉

Product sold individually

4,56 € incl. VAT

instead of 9,49 € incl. VAT

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To order [0 in stock] Average shipping time: 1 day after placing your order

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efore becoming a world leader, NGK Spark Plug was founded with the first spark plugs in 1930. However, these sparks are not just about simple ignition. Through a combination of precision, research and development, we are able to produce the best performing spark plugs for the rigorous technology of today's engines.

Thanks to its involvement in motorsports, NGK is continuously improving its range to provide more power, reduce consumption and improve combustion while guaranteeing an optimal product life. Therefore, the brand has thought about an optimised development for the best performance, with spark plugs that are able to withstand the most extreme conditions of racing engines, such as temperature and pressure variations as well as high speed operation.

This spark plug range is identical to the original version.

Each spark plug is sold individually - photo non-contractual.

What is the purpose of a motorbike spark plug?

The spark plug plays an essential role in the combustion of a petrol engine, as it is responsible for igniting the air/fuel mixture in the engine's combustion chamber. This combustion creates the power to set the vehicle in motion.

To ensure that the combustion is carried out in an optimal way, the spark (ignition) that ignites the mixture must occur at the moment when the piston reaches its highest compression point. The quality of this ignition influences many factors that can affect driving and the environment, such as performance, engine efficiency and the reduction of pollutant emissions.

More about the NGK brand

NGK Spark Plug is today the world's leading specialist in ignition and sensors. NGK Spark Plug is recognized worldwide for its expertise and know-how in technological innovation. Over the years, NGK Spark Plug has become the benchmark for manufacturers, distributors and repairers in the automotive, two-wheeler, agricultural and marine sectors.