4 New NGK Iridium IX CR8EHIX-9 Spark Plugs # 3797

Phenomenal plugs! Noticeable difference. Do NOT use anti-seize compound on these plugs. Per NGK website "Anti-seize can act as a lubricant, altering torque values up to 20 percent, increasing the risk of spark plug thread breakage and/or metal shell stretch. Thread breakage can sometimes involve removing the cylinder head for repair. Metal shell stretch changes the heat rating of the spark plug and can result in serious engine damage caused by pre-ignition. Do not use anti-seize or lubricant on NGK spark plugs. It is completely unnecessary and can be detrimental.

Plugs installed on St1100 motorcycle. Could you feel improvement in performance. Recommend.

Don’t waste your money on other spark plugs for 1997 Honda Magna VF750C. I was having issues with motorcycle not starting or running correctly after I rebuilt the carburetors and installed new basic cheaper plugs. After I installed these, the motorcycle starts and runs perfectly. Lots of power and great response.

Added throttle response and smoother idle on my 94 Magna. If you have a Magna, buy these plugs.

I replaced all 4 plugs in my Honda Magna, and let me tell you, this arose my bike from the dead. The sloggy acceleration, late throttle response, idle lag, power loss, HAS NOW COMPLETELY VANISHED. I swore it was my carbs, but holy cow it was not. These plugs fixed every issue with my bike. It feels like a brand new bike, and the power is INSANE. I am the happiest man in the world right now. 100% well worth the money and will buy this again, again, and again. If your bike takes these plugs, (especially the Magna), GET THESE RIGHT NOW, take my word for it. Fitment is flawless, and will recommend these any day.

These worked perfect for me. I have a 2001 honda magna that I'm not 100% on the millage. After market speedometer. But I have been have some stuttering. I was told to check and replace the plugs. These were a perfect match and popped in no problem. Came in fairly weekly. Bike is running a whole lot better. Only deride a few miles but I don't see why these wouldn't be a great oem or better upgrade.

I have used NGK plugs for many many years in my motorcycles never any problems yet in my opinion they are the best plugs for motorcycles

I did some cross referencing with NGK's website prior to buying these plugs for my 97 Honda Magna VT750C. I was looking for a better spark and more mileage. The installation was a snap and I made sure to use a dab of anti-seize on the threads, it's a good practice with aluminum heads. Just be careful not to over tighten! (Hard to do with a 4" long ratchet) I noticed upon firing the bike ran smooth even stone cold and no choke used just idling. While crusing down the road throttle response is improved vs the prior standard plugs with 1500 miles on them. A full throttle launch is awesome and the engine quickly hits redline while being smooth through the rpms. Time will tell on mileage improvements! Got to go.......time to ride!! 👍