IMO GRUB 30
The smallest size in the Imo Grub series.
The ultimate weapon for stocked bass raised on pellet feed and area-style bass fishing.
Not only effective with a no-sinker rig, but also works great with split-shot and down-shot rigs.
Length: 30mm
Weight: approx. 1.3g (slight variation by color)
Quantity: 10 pcs
Hook Size: Offset #4 (e.g., GY Offset Hook #4), Mosubari (straight shank hook)
Hook size may vary depending on shape; use as reference.
IMO GRUB 40
The standard Imo Grub size, perfect for spinning tackle.
Covers a wide range of no-sinker applications, from site fishing in pressured lakes to shallow structure targeting.
Length: 40mm
Weight: approx. 3.5g (slight variation by color)
Quantity: 10 pcs
Hook Size: Offset #1–1/0 (e.g., GY Offset Hook #1–1/0), Mosubari
Hook size may vary depending on shape; use as reference.
IMO GRUB 50
When the 40mm can’t quite reach, but the 60mm feels too big — the 50mm is the sweet spot.
With just the right volume, it’s easy to handle on both baitcasting and spinning tackle.
Length: 50mm
Weight: approx. 5.7g (slight variation by color)
Quantity: 10 pcs
Hook Size: Offset #2/0 (e.g., GY Offset Hook #2/0)
Hook size may vary depending on shape; use as reference.
IMO GRUB 60
For anglers who want to fish Imo Grubs on baitcasting tackle, need stronger appeal, or want to cast further even without a sinker.
The large-size Imo Grub delivers all that.
Length: 60mm
Weight: approx. 8.5g (slight variation by color)
Quantity: 10 pcs
Hook Size: Offset #3/0–5/0 (e.g., GY Offset Hook #3/0–4/0)
Hook size may vary depending on shape; use as reference.
Breaking Tough Conditions with No Action
The Gary Yamamoto brand pioneered the “Imo Grub” category.
Originally derived from cutting off a grub’s tail, this shape evolved into its own unique lure genre, spawning many imitations across the industry.
Smith has designed a dedicated model, not just a simple tail-cut, but a refined Imo Grub specifically optimized for performance, delivered under the original Gary Yamamoto brand.
Development Concept
Enhanced Slide Fall & Castability
The hallmark of the Imo Grub is its slide fall action.
This dedicated model emphasizes a rear-weighted design, further improving slide fall motion while also enhancing casting performance.
However, an overly tapered body can reduce hook-up performance with offset hooks.
If the hook point section is too thick, the hook gap narrows, leading to missed strikes.
Thus, the body taper was carefully designed to maintain hook-up efficiency.
As sizes increase (e.g., 40mm and above), the taper becomes gentler for this very reason.
Reduced Head Tearing
Since Imo Grubs are most often rigged no-sinker with offset hooks, casting forces concentrate on the head, which commonly leads to tearing.
By increasing the head diameter, durability is significantly improved.
While not indestructible, head tearing is reduced compared to previous designs.
Tactical Applications
Structure Fishing
The Imo Grub’s slide fall is perfect for penetrating tough cover.
Overhanging trees, docks, fishing platforms, or moored boats — by maintaining a “slack-but-not-loose” line tension, anglers can guide the Imo Grub precisely into key strike zones.
High-Pressure Lake Strategy
The Imo Grub doesn’t rely on strong appeal; instead, its low-impact presentation is highly effective against pressured bass.
Especially for wary fish or bass weakened by environmental factors,
methods like ultra-slow dragging or simply letting it sit on the bottom can trigger bites when nothing else works.
