S125 Inertia Only Dynamometer

Details and Specification of S125 Inertia Only Motorcycle Dynamometer System.

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What's New


Transport for London (TFL) ULEZ

Dynamometers and Software now available.


Sub Contract Laser Cutting Service

Dyna Pro has invested in an Amada Laser Cutting machine. Currently being commissioned.

We will be offering a sub-contact laser cutting service. Most metals, plastics and wood.


Latest Software Released

The latest release of ‘Dyna Run V3’ Dynamometer control software Version 3.23.0 has now been released to all registered users.


Updated Ignition Pick-Up

Newly developed and updated Ignition Pick-Up System, please contact Dyna Pro for more information.


Used Equipment Section

There is now a 'Used Equipment' section with our current used stock list. All used equipment comes with a manufactures parts warranty, and can be dispatched immediately.


New Online Shop (Coming Soon)

There will shortly be an online shop for all spares and accessories for your Dyna Pro Dynamometer. Secure check-out with the confidence of Pay-Pal.

Orders will normally be dispatched within 24 hours. 



Current News


Transport for London (TFL) ULEZ

Dynamometers and Software now available.


New version of Dyna Run V3 has now been released.

Version 3.23.0 of Dyna Run software has now been released to all registered users.



Recent News


Dyna Pro to Release Car Dynamometers


Dyna Pro Dynamometers have announced the release of there Car Dynamometers, the first two models will be capable of 600 hp and 1000hp.

More details to be released soon.


S125 Motorcycle Dynamometer System


S125 Inertia Only Chassis Dynamometer


Image of Dyna Pro S125 Inertia Only Motorcycle Dynamometer System

The Dyna Pro Dynamometer range of Professional Inertia Dynamometers features the S68, S125 and the T62. These machines have been designed and developed for the ‘Professional’ engine tuner, retail shops and service Centre's, as well as individuals who race at club level and want the very best performance from their machines. All Dyna Pro Dynamometers will provide consistent, repeatable results.

With Dyno Pro's advanced windows software, Dyna Run V4, operating the Dynamometer is simple and user friendly. Software upgrades are released throughout the year, and all Dynamometers come with a day’s training.

‘Seat of the pants’ testing is pure guesswork, a dyno will give you figures fast, and let you know and diagnose exactly what is happening in the heart of the motorcycle being tested. The Inertia range of Chassis Dynamometers is a breakthrough in terms of performance for money and all Designed and Manufactured, ‘in house’ by our highly skilled workforce based in Basingstoke, UK.

All Inertia machines can be upgraded to full eddy current load control at any time, with the addition of the 850ft/Lb Eddy Brake Upgrade Kit (DP-EBU), this gives financial flexibility when considering a dynamometer system to suit your needs.

Inertia Dynamometers will only handle ‘Sweep Acceleration’ testing, where as Load Controlled Dynamometers will handle both ‘Sweep Acceleration (fixed load & Variable load)’ and ‘Static’ testing at any given engine speed or road speed.

All of our inertia only chassis dynamometers come as standard with a Hand Controller Pendant, Intelligent Ignition Pick-up System, Starter Motor System including battery and charger, Air Brakes for emergency braking on power failure, and 12 additional analogue input channels for custom sensors.

Dyna Pro Dynamometers is so confident of its products, quality and reliability that all of our machines come with a 2 year replacement parts warranty.(excluding consumables)



Standard Hardware Features

  • S125 Inertia Dynamometer.
  • Dyna Run V4 Advanced Windows Software.
  • Dynamometer to PC USB Link
  • Multi Function Remote Hand Controller.
  • Intelligent Ignition Pick-up™ system fitted as standard. (Primary and Secondary)
  • Starter System fitted as standard (Also used to calibrate Dynamometer).
  • Air Brake System (With emergency lock-down in the event of power failure.)
  • 12 Auxiliary 0-5 Volt Data Acquisition Inputs, for connection to additional sensors.
  • Machine Construction from 3, 5 & 10mm Precision Laser Cut steel, powder coated finish, Blue & Yellow.
  • Designed and Manufactured in the UK
  • 1 Day Training (at Dyna Pro Works)
  • 2 Year replacement parts warranty.(excluding consumables)

Optional Accessories

  • Twin Cooling Fans System (High Speed, High Pressure - Operated from Hand Control Pendant). ***
  • Wideband Air Fuel System. (Single Channel, Double Channel and Quad channel). ***
  • Weather Station (Temperature, Humidity, Pressure & Relative Air Density). ***
  • Gas assisted Loading Ramp. ***
  • Keyboard Monitor Shelf. ***
  • 4 Channel Type K Thermocouple Unit.
  • Eddy Brake Load Controller (Allows Static and Dynamic control).
  • Ram Air simulation System ( Calibrated to road speed).
  • Infrared Temperature monitor (up to 500ºC).
  • Exhaust Extraction Kit.
  • Exhaust Arms.
  • Carbide Drive Roller Coating.

Items shown '***' above come as standard with the show package deal.


S125 Technical Specification


  S125 Dynamometer Specifications 
  Maximum Power    600 h.p   Vehicle Type   Bike
  Maximum Torque   500 ft/lb   Loading Type   Inertia Only
  Maximum Rear Wheel Speed   200 mph   Speed Encoder System   Digital
  Modeled Mass   255 Kg (560 lbs.)   Ignition Pick-up   Digital (Intelligent Pri, & Sec)
  Drive Roller Diameter   45.3 cm (17.83")   Data Acquisition System   Digital High Speed USB
  Drive Roller Width   45.0 cm (17.71")   Length (Without Ramp)    270.4 cm (106.46")
  Drive Roller Inertia   13.0 Kg/m²   Width   100.4 cm (39.53")
  Drive Roller Surface   Knurled (Anti-Corrosion Zinc)   Height (Deck)   44.9 cm (17.68")
  Maximum Bike Length   239.6 cm (94.33")   Height (Overall)   88.4 cm (34.80")
  Minimum Bike Length   120.6 cm (47.48")   Weight (Un-Crated)   950 Kg (2090 lbs.) (Approx.)
  Timing Accuracy   50 Nano seconds
  Speed Accuracy   0.01 mph   Supply Voltage   190 - 240 Volts ac 50/60 Hz
  RPM Accuracy   0.1 rpm   Maximum Supply Current   20 Amps
  Calibration   Factory Calibrated   Air Consumption   <1 CFM (120 psi Max)


S125 Technical Specification Downloads


   S125 Dynamometer (High Inertia)
Dyna Pro S125 Inertia Only Motorcycle Dyno Image 1 Dyna Pro S125 Inerta Only Motorcycle Dyno Specifications 
Specifications (494KB)
Dyna Pro S125 Inerta Only Motorcycle Dyno Dimensions 

Dimensions (574KB)
Dyna Pro S125 Inerta Only Motorcycle Dyno Image 2 

Picture (427KB)
Model Type:

Load Type:
Inertia Only

Vehicle Type:



Specifications subject to change without notice.

If you require any help or assistance then please call or email us. sales@dynapro.co.uk