It's a Suzuki one...I think from the Bandit, and it has the same plugs as the Triumph model...but that won't affect charging unless you are so festooned with accessories that the original rectifier is already wheezing. The Suzuki one is serial type and while it will work just as hard it doesn't pull power out of the stator that it's not going to use. The Triumph R/R is a shunting type and it does do this and the unwanted power is dumped into the oil...to cool the stator off....and heat up the oil. Better to just not make any more electricity than you can use.