Ultima Seastrike 4oz Clear

Overview

Ultima SeaStrike Clear 4oz is a saltwater monofilament mainline built as a tough, all-round choice for anglers who need dependable performance without paying a premium price. Manufactured from a high-quality copolymer nylon, it's designed to deliver a strong combination of strength, toughness and abrasion resistance for demanding sea fishing conditions.

Despite this rugged construction, SeaStrike remains soft and supple, which keeps handling easy and allows for smooth, consistent casting from both fixed-spool and multiplier reels. The line is supplied in a Crystal Clear finish, offering a discreet, low-visibility alternative to fluorescent mainlines, on a generous 4oz bulk spool.

Perfect For

This line is aimed at general beach and boat fishing rather than one specific niche, making it a straightforward choice for anglers who simply want a decent, reliable sea-fishing mono. Its high abrasion resistance makes it well suited to mixed and rough seabeds where the mainline might come into contact with shingle, rocks, shells or weed.

With breaking strains running from 12lb right up to 50lb, SeaStrike also covers heavier saltwater applications where strength and durability take priority over outright casting distance. The lighter 15-20lb diameters suit typical shore mainline use, while the 30lb, 40lb and 50lb options broaden its scope for tougher boat and bait fishing setups.

Technical Insight

SeaStrike's copolymer nylon construction is engineered to balance toughness with manageable handling, addressing a common trade-off in abrasion-resistant monofilaments that can otherwise feel stiff on the reel. This suppleness translates into smoother casting and easier day-to-day use on the beach or boat.

Because 4oz is a fixed weight of line rather than a fixed length, the metreage supplied varies considerably by diameter - from around 1,174m at 12lb/0.32mm down to roughly 250m at 50lb. It's worth noting that SeaStrike is designed as a mainline rather than a dedicated shock leader; Ultima recommends pairing it with its Superflex shock leader for leader applications.