Boost the performance of your classic Simson, MZ, Jawa, or ETZ two-stroke with this high-quality B8HIX iridium spark plug. Designed as a tuning upgrade, this plug features an iridium center electrode for a stronger, more consistent spark, better fuel burning, and improved throttle response. With an M14x1.25mm thread, 12.7mm thread length, and a 5kOhm resistor for RF suppression, it's a direct fit for many vintage mopeds and motorcycles. Perfect for enthusiasts who want to extract more power and reliability from their engines. Whether you're restoring an old bike, prepping for a race, or just want smoother running, this plug delivers. Easy to install with a 20.8mm socket. Give your classic ride the spark it deserves with this performance-oriented plug!