Behemoth Drivetrain,L.L.C.

Behemoth Drivetrain,L.L.C. www.behemothdrivetrain.com We manufacture high-performance, custom drivetrain components; specializing in underdrive units, adapters, and clocking systems.

05/27/2026

Meet the new Samson™ 4:1 Rubicon Strongbox.

4:1 reduction.
Massive Rubicon gear set.
Huge 9.5” ring gear.
Four giant pinions carrying the load.

The result?
A ridiculously strong underdrive that runs smooth, quiet, and is built to take an absurd amount of abuse.

This isn’t some tiny planetary setup hiding in a fancy case. The Samson is BIG. Heavy-duty components everywhere you look.

Compatible with many Dodge and Jeep transmissions, with additional spline options available for JK and aftermarket applications.

This video shows the front section assembly of one of the very first Samson units going out to customers this week.

Our Insider list got first shot at the initial batch, but full production inventory is coming this summer.

Want one? DM us.

05/26/2026

Introducing the Helix IL™ from Behemoth Drivetrain

A production-focused inline EV gearbox built for ultra high-RPM electric motor applications and ICE-to-EV conversions.

The Helix IL uses a custom high-speed planetary design to deliver compact packaging, high-load durability, and smooth operation at speeds up to 13,000 RPM.

Compatible with Cascadia, Turntide, Hyper9, and YASA motor platforms.

• 2.72:1 planetary reduction
• Integrated oil pump + cooler
• Hybrid ceramic bearings
• Electronic parking paw
• Inline architecture for traditional driveline layouts

05/19/2026

The Helix EV platform was built to solve a problem:

Most EV drivetrains were never designed for high RPM electric motors, real off-road abuse, or production-level integration.

The Helix lineup from Behemoth Drivetrain includes both Inline and IFS gearbox configurations depending on the application.

⚡ Helix IL (Inline)
Designed for ultra high-speed EV motors and applications where you need a compact inline reduction gearbox without an integrated differential.

Perfect for:
• Solid axle vehicles
• Transfer case based drivetrains
• Custom EV conversions
• High RPM motor applications

Features:
• 2.72:1 planetary reduction
• Integrated parking paw
• Hybrid ceramic bearings
• Optional oil pump & external cooler system
• Precision internal oiling channels
• Supports axial flux and radial flux motors

The Helix IL is also a direct competitor and alternative to the Torque Trends Torque Box — designed for customers looking for a more production-focused, high RPM capable solution.

⚡ Helix IFS
Designed for independent front suspension EV platforms that require an integrated differential gearbox.

Perfect for:
• OEM EV platforms
• AWD/4WD applications
• Custom IFS chassis
• Production vehicle programs

We’ll also be showing more of the upcoming Helix Drop model soon.

A lot of EV drivetrains are still adapted from existing parts and legacy platforms. Helix was designed from the ground up specifically for modern EV applications.

05/15/2026

Behemoth owner Jim Winn got invited to speak at a local preschool Career Day this week 😄

Turns out, if you show up and talk to a bunch of 4-year-olds about race cars, monster trucks, and big tires… you’re basically an instant celebrity.

The kids absolutely loved it — and honestly, Jim may have had just as much fun as they did 😂🤘

04/24/2026

Quick demonstration of the electric parking brake mechanism in the new Helix IL EV gearbox from Behemoth Drivetrain.

Behemoth’s Helix EV platform spans both IFS and Inline configurations, designed to integrate with axial flux and radial flux motors without compromise.

If you're building an electric platform and need a drivetrain partner, we’re ready—from first prototype to full production.

The first 6 of 20 E30 Helix IFS gearboxes staged for shipment—on their way to an OEM customer to become part of a full E...
04/23/2026

The first 6 of 20 E30 Helix IFS gearboxes staged for shipment—on their way to an OEM customer to become part of a full EV drivetrain assembly.

Behemoth’s Helix EV platform offers both IFS and Inline gearbox configurations and is designed to integrate with either axial flux and radial flux motors.

If you're building an electric platform and need a drivetrain partner, we’re ready to support from prototype through production.

03/25/2026

Test fitting the spline profile into the planetary set on the new Helix IL EV Gearbox.

The Helix IL Series is our next-generation inline EV gearbox built use with Cascadia electric motors, and high performance Turn Tide axial flux motors. Designed around a custom high-RPM planetary system with integrated oil pump cooling, it delivers unmatched durability and thermal control where others fail. Hybrid ceramic bearings and precision oiling channels keep it stable at extreme speeds without sacrificing efficiency.

02/27/2026

Some behind-the-scenes from the NP205 Cast Apex project.

We’ve already shown the finished mold — but this is a look at it being machined. This is the part most people never see. A lot of work goes into the tooling before a single case ever gets poured.

We’re just a few weeks out from first articles being cast and back in our shop for final machining.

After that, the small group of early pre-order guys will get theirs first… and then we’ll roll into stocking these as a standard item.

It’s cool to finally see this one moving from screen to mold to aluminum.

More soon.

02/23/2026

Big day over here.

The pattern for our Cast NP205 Apex just left for the foundry. This is the actual model that will be used to cast the new aluminum housings — and after a lot of back and forth, revisions, and fine tuning, it’s finally shipping out.

First castings should be poured within the next 3 weeks.
We’ll have the first units in our hands shortly after that.
Full production run right behind it.

This has been one of the most requested products we’ve ever had — a cast aluminum NP205 Apex that carries the Behemoth DNA without the billet price tag. Same engineering standards. Same abuse tolerance. Just built to hit a different price point and keep more of you on the trail.

If everything stays on track, these will be on the shelf and in stock within the next couple of months.

02/19/2026

Out in Alaska, isn’t just wheeling — he’s rewriting the rules.

The “30-06 Toyota” is a full-tilt 6x6 4Runner powered by a legendary OM617 Mercedes turbo diesel and backed by the Behemoth NP205 Juggernaut Dual Output.

From the dual rear outputs to the custom 2-piece driveshaft, this setup is purpose-built to put serious power to the ground — even when that ground is solid ice.

BUILD DETAILS — 30-06 Toyota
🔹 Toyota axles
🔹 OM617 Mercedes turbo diesel
🔹 Automatic transmission
🔹 NP205 transfer case
🔹 Behemoth Juggernaut dual output shaft
🔹 Dual rear outputs
🔹 2-piece driveshaft to rear axle

Built to take a beating. Built to keep moving.

Address

Leitchfield, KY
42754

Opening Hours

Monday 7:30am - 8pm
Tuesday 7:30am - 8pm
Wednesday 7:30am - 6pm
Thursday 7:30am - 8pm
Friday 7:30am - 8pm
Saturday 7:30am - 6pm

Telephone

+18559281984

Website

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