Your cart is empty.
Your cart is empty.DescriptionGain up to 3HP just by using these plugs! The ultimate in spark plug technology and performance from the industry leader The iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the size of a conventional nickel electrode Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life New metal shell plating has enhanced anticorrosion qualities Come pre-gapped
John J.
Reviewed in the United States on February 9, 2025
I have been using these plugs in all my vehicles since they came out with absolutely no problems, Easy starts even in freezing temps. A+++
Brian Satterfield
Reviewed in the United States on February 23, 2025
Fast and affordable.
Customer
Reviewed in the United States on February 20, 2025
These fit my Harley. They are, evidently, the gold standard.
James J.
Reviewed in the United States on February 17, 2025
These work really well
Rae
Reviewed in the United States on January 6, 2025
These are the only plugs I will use now. Great idle and cold starts. It is really crazy how smooth my bike is now when I start it. I did buy a spark plug gapping tool and feeler gauges to gap without harming the plug. I have these in an electraglide and a road glide ultra.
A_P
Reviewed in Canada on January 28, 2025
Using on a Japanese vehicle, not a motorcycle, but I always find NGK works best. These were marked as and seem to be original Japanese NGK, NOT bootlegs.
RT
Reviewed in Singapore on September 10, 2024
Just as good as the Harley ones. I feel no difference. Running these plugs now for 20k km.
Ares
Reviewed in the United States on July 28, 2024
Like the other reviews, my bike runs more smoothly. But need to regaps it. I used on my 07 HD sportster XL 1200c. the bike runs smoothly and more easily to start. BUT must check the gap. The plug comes around 0.030", HD manual showing spark plug gap is indicated as between 0.038 and 0.040. So, should be regaps the plug when before install it.
Jim Boutelle
Reviewed in the United States on December 16, 2024
I use NGK plugs in my racecar motors, so I know they are really good quality. These look really nice, and the gap was already perfect, so I didn't have adjust. However, I am still having intermittence misfires in my Harley Softail 103...? My old plugs were looking normally aged, but I didn't know exactly how many miles on them (bought bike used) so I figured it was time to change them. I still have the same misfires, so I can't say for sure it could be these plugs...? I have used fuel injector cleaners, and almost always 93 octane fuel, so I need to try to figure out why it is still bucking occasionally... hopefully not the injectors or ECM... :O(
Verified purchase
Reviewed in the United States on November 13, 2024
You get what you pay for. Very good strong running plug.
Shuttle1981
Reviewed in the United Kingdom on May 3, 2023
Excellent product
BJ96
Reviewed in India on December 4, 2023
OEM fit for Harley Davidson Fatboy 103 Ci twin cam engine. Smooth starting and running.
Carlos Castillo Castro
Reviewed in Mexico on July 4, 2022
Rápido, calidad, precio
Recommended Products
