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Sigma Integrale

DK2 Motion System

DK2 Motion System

Regular price $4,440.00 USD
Regular price Sale price $4,440.00 USD
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Engineered to be more than double the performance at half the cost of other turnkey motion systems, with modern controllers and low total loop latency.

The DK2 motion system is a pure motion system for serious sim-racing enthusiasts, drivers and researchers. The system shares the same design and construction as our industrial-grade DK-X motion systems used in our full motion vehicle and platform simulators. Additionally, DK2 is mechanically and electrically engineered around our unique motion algorithm to provide the most realistic and representative vehicle motion feedback with no pre-recorded canned effects.

DK2 takes a modern approach to our signal processing and motion control to create the most responsive system on the market. Every elevation change, vehicle movement, surface change and gear shift, is captured and reproduced within 2” (50mm) of the available mechanical stroke.

ONLY DK Motion System are:
- completely made from billet aluminum for optimal haptic transfer
- feature a 2-inch (50mm) solid steel piston for exceptional side loading
- use American made motors and controllers for exceptional signal control
- have a 3-year electrical and 1-year mechanical system warranty
- provide license free simple to use software with automatic over the air updates
- years of maintenance free operation with no lubrication required

If you do not have an available network port on your computer. Please feel free to use a USB to Network adapter such as this model available on Amazon.

For more information, please read our frequently asked questions here: FAQ

All motion systems are built to order and ship once rigorously tested. All systems include a 3-year warranty from date of purchase.

See reviews of our system in our Product Review section.

All DK systems can upgraded into the future as new features and models are released. Please see visit our upgrade program page or contact us for more details. [we actually pick up the phone and answer e-mails ;-) ]

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Technical Information


  • mono-block, machined billet actuators with 2” (50 mm) travel
  • powerful, responsive and compact American Teknic servo motors
  • maximum weight capacity (chassis and driver):
    • 3-actuator system = 375 lb (170 kg)
    • 4-actuator system = 500 lb (227 kg)
  • billet-machined floating feet with large rubber pads
  • aluminum t-slot mounting hardware compatible with 25 to 45 series profiles
  • single controller box (115v/240V compatible) with power and network cables
  • two sets of 1m and 2m data and power cables from the controller to actuators
  • Sigma’s motion algorithms & simulation software
  • automatic Over-the-Air controller firmware updates


  • 100% designed, manufactured, assembled and tested in California, USA
  • Premium THK ball screw for smooth performance and durability
  • Machined billet aluminum body to ensure concentricity and accuracy
  • 2″ (50mm) in piston diameter for large side-loading capability
  • T-slot aluminum extrusion friendly
  • 10 lbs. each (4.5 kg) with the DK2 motor
  • Environmentally friendly tumbled finish


  • PC side (Windows 10/11)
    • Game physics engine @ 333 Hz: 3 ms
    • Windows OS response: 1 ms average
    • Sigma 10-layers algorithm: 1 ms
    • Send target positions via Ethernet: 0.3 ms
  • Controller side (Real-time OS in ARM)
    • Response to new position targets: < 1 microseconds
    • Motion Algorithm for smooth motion: Average: 25 ms, Range: 0 to 50 ms
    • Send motion data to 1st micro-controller at 1000 Hz: 1 ms
  • Controller side (2 low-latency micro-controllers)
    • Send motion data from 1st micro-controller to 2nd: 0.1 ms
    • Digital pulse generation: 0.002 ms
  • Electrical connection from 2nd micro-controller to ClearPath motor
    • 3V to 5V conversion: 2 ms
  • ClearPath servo motor
    • Digital pulse signal to actual motion: 1 ms


  • ClearPath Integrated Servo Motor CPM-SDSK-2331S-RLN
    • Rated (RMS) Torque = 124 oz-in (0.9 N-m)
    • Peak Torque = 620 oz-in (4.4 N-m)
    • Max Speed = 2,520 rpm
    • Total Weight Capacity (for optimal performance), including fully-loaded simulator with driver:
      • 3-actuator system = 375 lb (170 kg)
      • 4-actuator system = 500 lb (227 kg)
    • Optically isolated, current-based I/O system (EMI free)
    • Average system draw at 110V is about 0.290 KW (Peak 1600VA)
  • In-house manufactured actuators | 3D Model: Available Upon Request 
    • 2” (50mm) actuator travel
    • speeds of 8.4"/s @ 2,520 rpm
    • 5/8” diameter, USA ball screw and nut
    • 2” (50mm) diameter piston
    • Mono-block machined billet aluminum body
    • All American made components
  • Motion Controller | 3D Model: Available Upon Request
    • ClearPath IPC-5 Intelligent Power Supply
    • Input voltage 95-125/190-250 VAC; 50-60Hz
    • Operates at 600Watt max, which is roughly 5.5A @ 110VAC, so about 2.6A at 230VAC
    • Real-time and remote motion control via default browser or phone/tablet
    • Signal processor with amplifier
    • Embedded microcontrollers
    • Shielded Molex connectors
    • 15" wide, 9.25" deep and 3" tall
  • Sigma's Software and Algorithms
    • Motion Integrity™ architecture to provide ultra-responsive, precise and accurate motion control
    • Dynamic scaling algorithm to best represent all layers in the available actuator travel
    • Organic and natural feeling Velocity Trap™ algorithm
    • Smooth integration of the 10 motion layers
    • Real-time remote control interface
    • Custom Motion Profiles
  • Mounting hardware
    • Machined billet mounting bracket
    • T-slot aluminum extrusion (80/20) friendly
    • Machined billet floating feet with mounting capability

Warranty & Shipping

See our Shipping Policy page for information on shipping, warranty and returns.

# of boxes Total Weight Length Width Height
DK2 1 62lbs/28kg 56cm/22″ 46cm/18″ 31cm/12″