Fit For Swing Arm Bushes 10x23x30mm For Pit Dirt Bike ATV Quad Motorcycle Spare Parts Fit For rear swing arm assembly positions For pit bike, dirt bike, atv, quad general motorcycles standard 10x23x30mm size mounting opening for direct press-in installation cushions swing arm movement to reduce friction suppress road vibration during riding made of elastic rubber with built-in rigid inner tube for structural stability wear, oil mud to maintain consistent suspension in off-road scenarios