This is the mechanic Yamaha 125Z at the workshop
15-39T 428 is the sprocket setup for this Yamaha 125Z
Original Yamaha 125Z carburetor is still being used but tuned to maximum power
Still under tuning with the 2T oil pump uncovered
Original Yamaha 125Z exhaust but modified and operated
2T oil line is being replaced by larger diameter tubing
REMEMBER: NEVER RACE ON THE PUBLIC ROAD, RACE ON TRACK ONLY!