Iridium Bougie BPR7EI-X. This is the best spark plug available for your Yamaha XS650 – SR500 – XT500. NGK developed the Iridium IX high-performance spark plug specially for motorcycles. It offers very good acceleration values, optimized starting, operates more quietly and has a longer service-life – while also reducing fuel consumption. An investment that is worth [...]

Spark plug NGK BP7ES standard spark plug Yamaha XT500 – SR500 – XS650