GY6-50 rocker arm, 1).High quality,long service life 2).Wearable and durable. 3).Light weight,low friction coefficient GY6-50 rocker armThis rock arm set fit for all Chinese scooter GY6-50, 4 stroke.Made of special steel material with Japanese technology, our rocker arm is a oil saving product, good thermal recession, and wearable. 2 times life than others. GY6 rocker arm ,GY6-50 rocker arm