Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair)

Installed these NGK Iridium IX DCPR7EIX spark plugs in my 1999–2016 Harley Davidson Twin Cam, and the difference was noticeable right away. The bike fired up quicker, idled smoother, and throttle response felt more crisp. NGK quality speaks for itself. The iridium tip is known for durability and a strong, consistent spark, and that’s exactly what you get. They feel like a premium upgrade over standard plugs, especially if you ride often or want dependable performance. Fitment was perfect, no issues with installation, and they came properly packaged as a matched pair. For the price, it’s a solid upgrade that improves reliability and performance without breaking the bank. If you’re running a Twin Cam and want better ignition performance and long service life, these are an easy 5-star choice.

Great plugs . Work better than screaming eagle in my 103 roadking . Gap them at 35 because they are fine wire .

good quality, good price, fast shipping

Leaves you feeling better

Make sure you gap them appropriately regardless of it being done from the factory…happy with them so far! 2006 street glide

Put these in my 1999 Harley Ultra. It fires off fast, sound great. When it reaches operating temp it idles at 900 rpm. I have an 04 throttle body and a S&S pcm w/02 sensors and S&S pipes that run under the frame like the new bikes. Not sure if the plug help lower the idle but it much nice at that rpm. The bike has other mods as well. I do HIGHLY recommend these spark plug.

PERFECT FIT FOR MY 2016 HARLEY DAVIDSON ROADSTER 1200CC

They're spark plugs and they work properly. I chose these because I've used NGK parts in the past and have never had an issue with their products. These went into a 2010 Road King and I have now burned two tanks of gas since installation. I didn't make any other engine changes and did do a three-hole fluid change. My MPG went up by 2 since the plugs were installed. I doubt new fluids did it and the bike seems to run smoother. I bought the bike used with 45K on it and I can't say the original plugs had ever been changed or if they were, the previous owner(s) used original Harley plugs. Either way, I'm happy with them and the bike seems to run smoother now.

OEM fit for Harley Davidson Fatboy 103 Ci twin cam engine. Smooth starting and running.

Good update for my Harley

Just as good as the Harley ones. I feel no difference. Running these plugs now for 20k km.

Funciona perfecto en una iron 883 del 2020 son el segundo para que compro y sin problemas.

Arrived super fast and install was a breeze, really woke up my fz09!