Brisk YS Silver Electrode Single Point Performance Upgrade Spark Plugs. 1x BRISK "LR11SL-nc Gap 0.8mm". Fits: Yamaha YZ125 - all models from 1974 to 2020. They also upgrade & replace = Bosch, Champion, Denso, Delco, Ngk, Platinum & Iridium Spark Plugs.
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