Humminbird IDMK-H89R Reinforced In-Dash Mounting Kit f/HELIX 8/9 G3N/G4N [740179-1]
Humminbird IDMK-H89R Reinforced In-Dash Mounting Kit f/HELIX 8/9 G3N/G4N [740179-1]
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IDMK-H89R Reinforced In-Dash Mounting Kit for HELIX® 8/9 G3N/G4N
In-Dash Mounting Kit allows quick and easy, in-dash installation, with all necessary mounting hardware.
Features:
- Compatible with: HELIX 9 MSI GPS G4N, HELIX 9 MSI GPS G3N, HELIX 9 MDI GPS G4N, HELIX 9 MDI GPS G3N, HELIX 9 CHIRP GPS G4N, HELIX 9 CHIRP GPS G3N, HELIX 8 MSI GPS G4N, HELIX 8 MSI GPS G3N, HELIX 8 MDI GPS G4N, HELIX 8 MDI GPS G3N, HELIX 8 CHIRP GPS G4N, HELIX 8 CHIRP GPS G3N
Specifications:
- Type: Mounting Brackets
- Box Dimensions: 7"H x 8"W x 10"L WT: 1.5 lbs
- UPC: 082324053764
Quick Guide (pdf)

Custom Baits Built by Hand — Not Machines
Every jig head and soft plastic bait is poured, painted, and packed by real anglers. Because crappie fishing deserves more than factory-made bait.
FAITH. FAMILY. FISHING.
Born in South Louisiana, Kill Um’s Jig Co. carries generations of crappie-fishing tradition. From our family’s hands to your line, every bait is made with heart.
Handcrafted. Water-Tested. Slab-Approved.
From mold to water, every jig head and soft plastic we make is designed with purpose — to mimic real baitfish and get bites when the pressure’s on. No shortcuts. Just results.
Testimonials
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The 2" slab snack swims just like the real thing. I’ve been fishing crappie for 20+ years — these baits flat-out catch fish.
Jeremy M., Mississippi -
You can tell these aren’t mass-produced. The jig heads are balanced, sharp, and durable — love supporting a small business that gets it.
—Brittany R., Arkansas -
I’ve used big-name brands for years, but Kill Um’s baits consistently outperform them. Caught my personal best this spring using the Slab Twister!
Derrick S., Louisiana