01
Folbe quick-release rod holder
Lift the rod straight up for a fast response when a fish strikes. A locking mechanism helps keep the rod and reel secure.
Quick lift · Secure locking · Built for fast action
Built To Last
Never gets tired, bored, or hungry. It's Relentless!
Explore the machine
Select a numbered point to see how each part supports reliable jigging on the water.
Select a feature
01
Lift the rod straight up for a fast response when a fish strikes. A locking mechanism helps keep the rod and reel secure.
Quick lift · Secure locking · Built for fast action
02
A 24V, high-torque brushless servo motor delivers smooth, precise jigging action. Its IP65-rated housing resists dust and water spray.
24V · 200W · Brushless · IP65 rated
03
M12 aircraft-style waterproof connectors secure the cables at the motor, while sealed waterproof glands protect the enclosure connections.
M12 motor connections · Sealed enclosure glands
04
A 14-inch anodized aluminum T-slot stem provides a strong, stable backbone while allowing components to be securely positioned.
14 in. · 1.5 in. square · 6063-T6 anodized aluminum

05
Two easy-to-use knobs provide direct control of jigging arc and speed without requiring the app.
Arc control · Speed control · No phone required
06
A sealed push button provides simple on-and-off control directly from the enclosure.
Sealed · Easy access · On-machine control
07
A 24V, 4Ah rechargeable lithium-ion battery uses a 12-cell design to provide portable power for the JFM.
24V · 4Ah · 12 cells · Rechargeable lithium-ion
08
The oval base fits standard fishing track systems and allows a range of rotation.
Track compatible · Wide adjustment range · Secure mounting
See it in action
Take a closer look at the features that make Relentless simple, capable, and ready to fish.
See how quickly the Folbe holder releases the rod when a fish strikes.
Oval base allows easy adjustment of position.
Adjust Arc and Speed without the JFM App
Jeff Zack has spent years fishing for salmon and refining jigging techniques around Muskegon, Ludington, and the Gulf of America. After wishing he could fish another line without adding another aching arm, he began building his own jig fishing machines. The early versions were fussy, but they caught fish. Five years of field testing later, those experiments have evolved into the all-digital Relentless JFM, designed to make jigging more effective and enjoyable.
Jeff is a lifelong entrepreneur and inventor. A Chamber Entrepreneur of Excellence recipient, he has helped build three successful start-ups. Most recently, he co-founded and co-owned Fomcore before retiring in 2024. Retirement gave him more time to fish, but it did not quiet the entrepreneurial instinct. Relentless JFM brings those two passions together.