It was the first YAMAHA 4-stroke 250cc model. Compared to the 400, its tire size was only one size smaller and the chassis parts were quite the same. They made it look a bit overweight.
I've made the mistake and bought BPR 7 ES at first. The R stands for Resistor, but the cabs have a resistor and you don't need resistor caps. This is my spark plug after 150 km with a new aftermarket exhaust. 100 % good combustion. I even made the mixture a little bit richer. Even when you see in some Yamaha books that you should run BPR 7, check the resistance of your cap, first. If the cap has 6 Kilo Ohm, then no need for another resistor. . The BP 7 ES are for most Yamaha Viragos the best spark plugs. The problem is that eBay these days even sell fake plugs from China. I know that Webike gets their stuff from Japan, so no need to worry about a nightmare of fake plugs in my bike. The price is also okay, will buy them again when I need new ones. Only 4 days from order to delivery is good.
I used to use DENSOWindshield IRIDIUM afterwards, but I heard that acquaintance knew that NGK was more secure than DENSO, and purchased it with Nori.
Honestly because it is the same Windshield IRIDIUM, I did not understand the difference so much, but ". It is good singing phrase (Lol)
Package is also Parenthesis well, shaking the heart of Motorcycle riding.
The price is also cheaper than DENSO, so I will go on with this for a while.