Scientific Anglers Amplitude Smooth Grand Slam Fly Line

Built for the ultimate flats challenge, the Amplitude Smooth Grand Slam is designed to help anglers pursue the most coveted trio in saltwater fly fishing — tarpon, bonefish, and permit — with one versatile, high-performance line.

Featuring a short, powerful head and a three-quarter heavy taper, this line loads quickly and delivers tight, controlled casts even in wind. It turns over long leaders and bulky patterns like crabs, shrimp, and baitfish with authority, making it equally effective for snook, redfish, and sea trout across a wide range of shallow-water environments.

Amplitude Smooth technology reduces friction for improved shooting distance while maintaining the durability needed for harsh tropical use. Combined with AST Plus slickness additive and Tropi-Core construction, the Grand Slam stays stiff, slick, and reliable in heat and humidity where performance matters most.

Key Features:

• Three-quarter heavy taper for fast rod loading and improved turnover
• Short, powerful head designed for wind and large flies
• AST Plus additive for superior shooting and durability
• Tropi-Core technology optimized for tropical climates
• Ideal for tarpon, bonefish, permit, snook, redfish, and sea trout
• Welded loops for quick rigging

One line built for the full flats experience.