This review is from: 4 New NGK Iridium IX Spark Plugs CR9EIX # 3521
Ran these for 25000 miles in a high compression Triumph Tiger 1050 triple engine.
Very clean plugs. No deposits. Light brown color on the insulator. Factory recommends changing plugs at 8000 miles. These iridiums went three times that far and were still in spec. I would buy these again.
Help other customers find the most helpful reviews
This review is from: 4 New NGK Iridium IX Spark Plugs CR9EIX # 3521
This Spark plugs provide excellent response in the engine of my bike, much improved cold start, really recommend it enough. If you want to walk your bike better, no doubt buy these spark plugs.
Help other customers find the most helpful reviews