Rooster
I have the BMP stg#2 kit, came with gold stars, i tried the roosters out of my pro in it because if pulled harder when u snapped the throttle, way better shift force and acceleration. added some weight and put in my axys, night and day difference. I think they work so well because they use the factory 10 series profile with the added weight where its needed,
I loaded mine heel heavy. Clutches stay cool and sled pulls hard. Im running on a 163 pro 3" with the 2.8 camso track. so its geared super low 2.3:1 with factory 7 tooth drivers. I get less over rev related DET codes because it loads the engine so much better when I'm driving up into the alpine from low elevation too.