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Brian Satterfield
2025-09-01 15:09:02
Fast and affordable.
Customer
2025-08-21 14:53:53
These fit my Harley. They are, evidently, the gold standard.
John J.
2025-08-12 18:24:52
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+++
Jim Boutelle
2025-08-09 17:45:16
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(
James J.
2025-07-20 17:01:05
These work really well
Rae
2025-07-18 10:04:48
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.
Verified purchase
2025-06-14 11:42:13
You get what you pay for. Very good strong running plug.
Ares
2025-05-16 17:07:32
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.
BJ96
2025-04-27 10:14:54
OEM fit for Harley Davidson Fatboy 103 Ci twin cam engine. Smooth starting and running.
A_P
2025-04-26 20:45:48
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.
Carlos Castillo Castro
2025-04-17 10:58:38
Rápido, calidad, precio
Shuttle1981
2025-04-15 10:05:24
Excellent product
RT
2024-11-20 11:30:49
Just as good as the Harley ones. I feel no difference. Running these plugs now for 20k km.
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