MAIN LINES ＆ LEADERS
Carefully selected lines focused on sensitivity and real-world reliability.
PE lines, FireLine, and leaders are considered as one integrated line system.
MAIN LINES
The core of sensitivity and reliability in jigging
The main line is one of the most critical elements in jigging,
directly connecting the angler to the jig and transmitting information from underwater.
At SPJ Laboratories, we believe that consistent results come from
not just choosing individual lines, but from building a well-balanced line system as a whole.
The Approach to PE Lines
When selecting PE lines, we prioritize durability, handling, and reliability in actual fishing conditions.
While 8-strand PE lines are often praised for smoothness and strength,
real-world jigging frequently involves abrasion and uneven stress on individual strands.
In contrast, 4-strand PE lines use thicker individual fibers,
offering greater resistance to damage and a higher level of confidence in practical use.
For this reason, SPJ Laboratories focuses on 4-strand PE lines that perform reliably in real fishing situations,
rather than relying solely on theoretical strength values.
FireLine as an Option
FireLine is an effective option for jigging anglers who place the highest priority on sensitivity.
Its thinner diameter and high sensitivity allow anglers to detect subtle contacts from fish
and slight changes in jig behavior more clearly than with conventional PE lines.
Without this feedback, it becomes difficult to judge
which jig to select next or what action to apply.
By improving sensitivity, FireLine helps anglers
increase their available options and make better decisions on the water.
This is one of its greatest advantages.
Connecting the Main Line and Leader
The leader, positioned between the main line and the jig,
is also an essential part of the line system.
The performance of a leader is not determined by its standalone strength alone,
but by how effectively it works once connected to the main line.
A reliable system is one that allows the main line to fully express its strength
after knotting, ensuring confidence during the fight.
The MAIN LINES collection brings together PE lines, FireLine, and leaders
selected based on real fishing experience and considered as one complete line system.
By balancing sensitivity, durability, and reliability,
we offer line selections that help anglers find the next move even in demanding conditions.
