Review on 🏎️ Trkimal High Performance Camshaft for GY6 50cc 100cc Scooter Moped ATV Go Karts TAOTAO SUNL ROKETA TANK BAJA - 139QMB 139QMA Upgrade by Michael Powell

WORSE than STOCK. And I have the experience and knowledge to back up that claim. Same rise (25.5" / 25.6") as the standard. Same duration, a few degrees ahead. (Intentional or just happened, who knows?) The build quality is worse than s.Drain, pits s.den Cams. Bearings are worse, ABEC3, while ABEC5 bearings are stock. They don't exactly lie in the description, they just never mention lift or any performance and never call it "A9", just use the word "performance". Read, read, read, study all these gy6 details before you buy, there's more junk out there than good stuff. -Jeff