High-performance BPMR6A spark plug, precision-engineered for Motovox MBX10 and MBX11 mini bikes. Direct replacement for Champion CJ8Y, QCJ8Y, RCJ8Y, and 4972 models with exact fitment. Nickel-plated shell resists corrosion while copper-core electrode ensures superior heat dissipation. Laser-welded ground strap enhances durability for rough terrain riding. Ideal for mini bike enthusiasts, kart racers, and small engine mechanics. Factory-gapped 0.028" for immediate installation without adjustment. Triple-sealed design prevents fuel leakage during high-RPM operation. Electrostatic powder coating withstands vibration in off-road conditions. Trusted by professional pit crews for consistent cold starts and smooth acceleration.