Joined Sep 2017
595 Posts | 121+
Lansing Mi
With some of my previous bikes I did mosfet rectifier swap. After digging I see that many of the Monster's have had charging issue and also discovered the rectifier to be the cause of the problems. My most recent bike, Drz supermoto, are also known to have issue. Most of these bikes with charging issues use a "shunt" style rectifier. They are very old technology and very inefficient compared to the mosfet units. The "shunt" rectifier creates alot of heat and is rough on stators. I have read in numerous locations that the shunt designed rectifier lessens the life of the whole charging system(I had no idea that there was a life expectancy for the charghing system) and also lowers oil temp(although I'm sure it's very minimal). In my old supermoto I had to replace the stator 3 times over the 5-6 years that I had it(one was due to bolts backing out and No fault of the the electrical components). After swapping out to the mosfet rectifier harvested from a cbr600rr I never had an issue. I ran extra lights, heated gear and various other electrical components. I know triumphs are know to get the swap as well as supermoto and Monsters. My question (after my long winded talk), has anyone done a mosfet rectifier swap on the Hyper's? Another quick question related to the electrical system, has anyone replaced the starter system wiring? I'm reading that, yet again, the Monster's have inferior wiring to the starter solenoid and to the starter. I read that switching to a thicker gauge high quality wire with quality ends allow for the starter to spin quicker. Is this something the hyper would bennifit from too? Here is a good read and a list of bikes that use a mosfet that people are using. Good rule of thumb, if the rectifier starts with an "SH" it is a shunt. If it starts with an "FH" it is mosfet.
