Installed this kit on my 2019 Vader 125, I had been running the 141 BBK and the Z40 race cam already and the bike was very powerful. Now with the V2 head and BBK the engine puts out substantially more power through out the entire RPM range than before, it revs noticeably freer and quicker. Cant wait to get the bike back on the track this year with a bunch more power.
