If you live for those legendary Hexagenia limbata (Hex) mayfly hatches, you know they bring out the biggest, smartest trout in the river. The RIO King Splitsville Megaspinner Hex is purpose-built for those magic evenings when giant mayflies blanket the water and trout rise with confidence. Designed to imitate the large Hex spinner stage, this fly excels during low light, twilight, and headlamp-only fishing—when precision, buoyancy, and realism matter most.
This pattern combines high-floating deer hair, a durable synthetic underwing, and a distinctive layered wing profile to ensure it sits flush on the surface while remaining visible and tough enough for multiple fish. Finished with a long pheasant-tail split tail, it perfectly mimics the silhouette of a natural Hex spinner drifting helplessly on the current.
Whether you’re chasing trophy browns in Northern Michigan or fishing the famous spinner falls of California’s Fall River, this is a must-have dry fly for serious anglers targeting truly big fish.
