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EMAX Transmission
Meet our game changer
Designed to work with any size or class vehicle.
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MID-Series Transmission
Complete Powertrain Solution
Patented all electric clutches eliminate hydraulic control.
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MID-Series Electric Powertrain

Innovative multi-mode electric transmission.

Reliable, compact power for your electric vehicle.

MID-Series Electric Powertrain

Discover MID-Series

EMAX Electric Powertrain

Your single powertrain solution.

Designed to work with any size or class vehicle, made possible with modularity.

EMAX Electric Powertrain

Discover EMAX

E-Clutch Tech

Leading industry packaging, weight and features.

Designed with our patented electro-mechanical actuator.

E-Clutch Tech

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THE WORLD’S MOST ADVANCED ELECTRIC POWERTRAIN

Transmission technology for tomorrow's industry.

The EMAX single powertrain solution and MID-Series electric transmissions combine Sigma’s innovative technology and software to provide state-of-the-art power for any class vehicle.

EX-1
EX-2
EX-3
EX-4

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A single powertrain electric transmission designed to work with any size or class of vehicle.

Learn about EMAX
MID-1-8-21
MID-4-8-21
MID-3-8-21

Discover MID-Series

A multi-mode electric transmission that provides reliable, compact power for your electric vehicle.

Learn about MID-Series

about sigma powertrain

With over 100 combined years of experience in the automotive engineering industry, our core team of engineers, programmers, and technical personnel at Sigma Powertrain hold over 50 patents in the field of electric powertrains.

Meet the Team

sigma powertrain products

Agnostic to motors

Discover EMAX

EMAX Electric Transmission

Discover the power of modularity with EMAX.

  • At just 18″ long, EMAX has 4 CVT modes and can be a 1 or 2 motor solution capable of 4600Nm of input torque.
  • EMAX has the capacity for class 9 semi-truck yet is small enough to demo in our Raptor EVolved F150.
  • EMAX has a common gearbox with interchangeable inputs and outputs. This modularity design means it works with any class 6-9 application.
  • EMAX Multimode two-mode system to maximum electrical efficiency.
  • Each e-motor operates at 3 and 2 unique ratios respectively, each with independent power flow through a common box. This maximizes efficiency — keeping more of the drive cycle in the “sweet spots” of the e-motors.
  • EMAX’s all-electric powertrain has no need for hydraulics. Imagine that.
Electric Park & Hill Hold
Discover Park & Hill Hold

Electric Park & Hill Hold

Park it. Hold it. A solution designed to fit any electric vehicle.

  • Our patented Park Electric Park & Hill Hold is designed to fit any electric vehicle.
  • Electric Park & Hill Hold comes included in all Sigma Powertrain systems.
  • Interested in purchasing Electric Park & Hill Hold separately? Contact us for more information.

Agnostic to motors

Discover MID-Series

MID-Series Multi-Mode Electric Transmission

Reliable, compact power for your electric vehicle.

  • The MID-Series multi-mode electric transmission is a completely integrated transmission with Cascadia’s iM-255 300hp 3-speed BEV that includes inverters, heat exchangers, water pump, oil pump and pan.
  • Each MID-Series comes complete with an integrated powertrain controller, control software, and default calibration.
  • The MID-Series is sized for class 1–6 and available with the Dana LD Sumo motor.
  • The MID series is sized for class 1-6 with a max input torque of 1370 Nm.
  • For class 5-6, Sigma recommends the TM4 Sumo LD motor.
  • Our patented all-electric clutches provide extreme efficiency and power density.
  • All versions of the Mid-Series electric transmission include our Electric Park & Hill Hold feature.

Want to take it for a spin? See which shows we’ll be at this year where you can take Raptor EVolved for a test drive!

View Raptor EVolved

Demo Vehicles

Our first proof-of-concept vehicle, launched in Q1 2020, Raptor EVolved is equipped with an EMAX electric powertrain.

  • Hungry for horsepower? Look no further. The Raptor EVolved packs an impressive 800hp, because electric is uncompromising.
  • Maintain carry-over driveline with true 4×4 H/L capability.
  • Equipped with a 150kW battery pack, the Raptor EVolved has tested the 150 mile range. Further details and specs for final mile range will be available soon. We’re still driving it right now.
  • Our Raptor EVolved proof-of-concept vehicle shows off in impressive style. Visit us at one of the shows and see for yourself that maximizing efficiency doesn’t mean sacrificing power or speed.