Shimano's innovative technology, ARMABOOST, significantly enhances the casting distance and accuracy of larger baits that were once thought to have limited range.
The lure folds mid-air like an armadillo(*), significantly enhancing casting distance and providing precision control. With ARMABOOST, anglers can cast larger baits farther with accuracy, allowing for the recreation of natural fish movements in the water.
*armadillo → ARMA BOOST
Overcoming the Challenges of Casting Big Baits
A big bait is a lure specifically designed for targeting larger fish, effectively attracting various species such as bass and sea bass. While its substantial size enhances its appeal to these targets, it also presents challenges due to its joint structure, which increases wind resistance and limits casting distance.
It also poses a challenge for anglers trying to cast accurately, as the lure's trajectory can be easily disrupted by its tendency to assume an unstable posture in flight.
Long-Distance Flight through Flexibility: New Challenges Emerge
Shimano first focused on the joint structure of a big bait in order to improve its casting performance.
By designing the joints to bend more, we've minimized wind drag and enhanced the lure's stability in flight. This improvement also helps the big bait resist backlash, even in headwinds, enabling you to reach your target spot confidently with a single cast.
However, excessive bending of the lure led to several issues, including tangled hooks, compromised swimming action, and sand accumulation in the joint areas.
Featuring the 'Petit Lock Mechanism' to Prevent Hook Tangles
To prevent hook tangles, Shimano meticulously calibrated the hook eye positions and the lure's body angle, incorporating a cutting-edge technology known as the 'Petit Lock Mechanism.'
This technology allows the hooks to be semi-fixed to the lure, minimizing unwanted movement during both flight and retrieval. By deliberately limiting the hooks' range of motion, it effectively prevents tangling, enhancing overall usability.
Additionally, when sufficient force is applied, the hooks automatically disengage from the Petit Lock, which enhances casting distance and reduces the likelihood of line tangling.
To prevent hook tangles, Shimano meticulously calibrated the hook eye positions and the lure's body angle, incorporating a cutting-edge technology known as the 'Petit Lock Mechanism.'
This technology allows the hooks to be semi-fixed to the lure, minimizing unwanted movement during both flight and retrieval. By deliberately limiting the hooks' range of motion, it effectively prevents tangling, enhancing overall usability.
Additionally, when sufficient force is applied, the hooks automatically disengage from the Petit Lock, which enhances casting distance and reduces the likelihood of line tangling.
Magnet Power and Semi-Fixation: Achieving a Natural Swimming Action
The primary challenge with big baits has been that the joint sections move too freely, preventing them from effectively absorbing water resistance and resulting in unnatural movements.
Shimano harnessed the power of magnets to address this challenge. By integrating a magnet into the joint section at the front center of the body, the special plates connecting to the central structure are semi-fixed by magnetic force. This design ensures the front body remains securely in place while allowing the rear section to move flexibly. As a result, this innovative structure stabilizes the joint's range of motion, enabling the lure to swim naturally and smoothly.
Upon casting, the magnet lock disengages, allowing the lure to fold and ensuring a consistent casting distance.
This innovative design delivers the enticing movement of a big bait while maintaining impressive casting distance.
The primary challenge with big baits has been that the joint sections move too freely, preventing them from effectively absorbing water resistance and resulting in unnatural movements.
Shimano harnessed the power of magnets to address this challenge. By integrating a magnet into the joint section at the front center of the body, the special plates connecting to the central structure are semi-fixed by magnetic force. This design ensures the front body remains securely in place while allowing the rear section to move flexibly. As a result, this innovative structure stabilizes the joint's range of motion, enabling the lure to swim naturally and smoothly.
Upon casting, the magnet lock disengages, allowing the lure to fold and ensuring a consistent casting distance.
This innovative design delivers the enticing movement of a big bait while maintaining impressive casting distance.
Enhancing Distance and Accuracy for Big Baits: Target Previously Unreachable Spots
ARMA BOOST is a cutting-edge technology designed to achieve a high level of perfection by meticulously addressing issues caused by excessive bending, going beyond just improving casting performance.
It delivers long-distance casting performance and precision that redefine the traditional perception of big baits and jointed lures.

A shimmering mirror plate that attracts fish with its irresistible shine!
When lure fishing, short pauses between actions, like jerks or twitches, can often attract fish and entice strikes.
Introducing "FLASH BOOST," designed to leverage those critical short pauses to attract more fish. A reflective plate, suspended inside the lure by a spring, continues to reflect light even when the lure is motionless, drawing fish in effortlessly.
The center of gravity shifting system enhances casting distance and enables immediate swimming action, giving you a competitive edge.
Shimano's “JET BOOST” features a revolutionary center of gravity shifting mechanism that ensures stable long casts and quick starts for the lure. This innovative technology empowers anglers to achieve impressive casting distances and catch fish effectively, regardless of their skill level.
A powerful hologram that commands the feeding instincts of fish.
Discover Shimano’s innovative “SCALE BOOST,” which gives your lure a lifelike shine that attracts even the most cautious fish. By combining hundreds of scales with varying sizes, brightness, angles, and reflections, it creates an irresistible lure that no fish can resist.
Our goal, effortless reeling.
Shimano's reel design concept aims for “eternally smooth reeling.” The result is HAGANE. Shimano honed its proprietary metal processing technologies with precision cold-forging technology and refined them over many years to develop reels that only Shimano could deliver.