Mepps Aglia Inline SpinnerSize 4, 9g

Overview

Overview

The Mepps Aglia Size 4 is a 9g inline spinner built around the original French-style rotating blade, designed to generate flash, vibration and a distinctive pulsing action as it moves through the water. Its construction combines a weighted body, a rotating metal blade and a treble hook, creating a simple but active artificial lure that can be worked at different speeds and depths.

Compared with the smaller Aglia models, the Size 4 offers a larger and heavier presentation, giving it a more substantial profile in the water. This makes it a notable step up from the lighter 6.5g Size 3 for anglers wanting extra weight and visual size without moving into heavy shore-casting metals.

The lure's defining feature is its wide-rotating blade, which revolves around the central shaft at approximately 60 degrees during retrieval. Unlike a metal jig that relies purely on body movement for action, the Aglia uses this blade rotation to create its attraction, and it can continue to spin even on relatively slow retrieves.

Perfect For

The Mepps Aglia Size 4 is well suited to light coastal bass fishing, where a steady retrieve through sheltered coastal water, shallow gullies or around accessible harbour structures can produce consistent underwater attraction when bass are hunting smaller prey. Anglers should keep an eye on running depth over rocky ground, as the exposed treble hook can catch submerged obstacles.

It's also worth considering for pollack feeding around rocky structures, using a controlled retrieve to work the lure through open water while avoiding the snaggiest areas. For mackerel, the spinner offers an alternative to conventional metal jigs and feather rigs when anglers want to fish a single artificial lure, with its rotating blade creating a different presentation from the fluttering action of a casting metal.

Technical Insight

The wide blade rotation of approximately 60 degrees is what separates the original Aglia from narrower-rotation models like the Aglia Long, producing a wider spinning profile and more lift during retrieval. This also creates noticeable resistance in the water, which anglers can feel through a correctly matched spinning rod, helping with presentation control.

The 9g weight assists with casting and lure control in suitable coastal conditions, particularly for anglers using light or medium-light spinning rods capable of casting this weight effectively. While more substantial than the smaller Aglia sizes, it should still be treated as a light lure rather than a heavy shore-casting metal, with actual casting performance depending on rod, line, wind and lure aerodynamics.