SF-250A Powersports Dyno


The SuperFlow CycleDyn chassis dyno is used worldwide by motorcycle dealerships, educational institutions, and professional race teams to test motorcycles, karts, ATVs (quads), and similar vehicles within a safe, controlled environment. It is rated for 750+ hp (inertia), 500+ hp (eddy-current) and 200mph. The CycleDyn motorcycle dyno utilizes SuperFlow's rugged, impact resistant hand held controller for easy operation. The CycleDyn is available as inertia only, with eddy-current load for controlled acceleration, steady state (mapping) and step tests, or with eddy-current load and an AC motor. Loaded models also perform inertia only runs, giving users the capabilities of two dynos in one unit.

Because it is manufactured by SuperFlow, the CycleDyn delivers on both price and quality. This motorcycle dyno is not constructed with a cheap angle iron frame wrapped in thin sheet metal. Instead, we use sturdy steel plates and weld them at the seams to create a strong, vibration resistant enclosure and sealed air compartment for the innovative road speed fan options. The CycleDyn comes standard with a motorized front wheel restraint that accepts motorcycles with wheelbases from 48”- 72” (122 – 183cm) and an air-actuated front wheel clamp. It also comes standard with a temperature compensated load cell (eddy-current models) for precise torque measurement during loaded testing. Also standard is a complete data acquisition and control system that includes with our industry leading WinDyn software. So, whether you want to add a profit center to your business, justify customer purchases, or increase the on-track performance of your race motorcycles, the CycleDyn high-performance motorcycle chassis dynamometer can handle it.

Typical applications include:

  • Racing
  • Performance testing and tuning
  • Research and Development
  • Diagnostics
  • Durability and quality control
  • Emissions and fuel consumption testing
  • Education
  • Vehicle certification

SuperFlow dynamometers are consistently listed as the most profitable pieces of equipment in modern performance shops. Want to know how you can profit from your SuperFlow chassis dyno? Download: Making Money with Your SuperFlow Chassis Dyno to learn more!

Data Acquisition

WinDyn 4.0 ED

SuperFlow’s WinDyn® 4.0 Software is the most feature-rich system available for dynamometers today. We’ve included all the tools you need to make a SuperFlow® dynamometer a successful piece of your business. WinDyn® is preconfigured with industry standard tests to get you up and running quickly. But, we didn’t stop there… We’ve also developed powerful configuration and test editors that offer you complete, customized control of the dynamometer, the test cell and the tests you’re running.

WinDyn 4.0 ED image

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The handheld controller gives the operator full control of the dynamometer and the test sequence from the driver’s seat.  The controller is housed in a molded, impact resistant enclosure capable of withstanding years of abuse in harsh test cell environments.

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Product Specifications

Peak Power 750 hp (559 kW)
Peak Absorbed Power 500 hp (373 kW)
Max Speed 200 mph (322 km/h)
Adjustable Wheelbase 58 - 84 in. (147 - 213 cm)
Roll Diameter 20 in. (51 cm)
Roll Width 16 in. (41 cm)
Base System Inertia 323 lbs (147 kg)
Axle Weight 1,000 lbs. (454 kg)
Air Requirements 80-100 psi (552-690 kPa)
Power Requirements Dynamometer: 240V AC, 30 amp, single phase Computer & Sensor Box: 120V-240V AC, 15-8 amp
Dimensions 85L x 69W x 21H in. (216 x 174 x 53 cm)
Weight 1,800 lbs (816 kg)

Product Options

AC Motoring Cube

The AC Motoring Cube brings emissions level test data the CyleDyn. It allows you to perform R&D economically prior to final certification. The AC cube will simulate inertia; AC cube will simulate inertia, rolling losses and aerodynamic effects with the help of an advanced motor controller and WindDyn. Perform coast downs and evaluate parasitic losses or use SuperFlow’s drivers trace software to perform emissions drive cycles.

Air Fuel Kit

Air Fuel Kit image

Air Fuel Meter Kits available in any channel count configuration. Bosch LSU 4.2 and OEM grade NTK type sensors available.

Analog Panel

Analog Panel image

8 channel analog panel to integrate exhaust gas analyzers lambda sensors, O2 sensors, etc. Select 0-1V, 0-5V, 0-10V, 0-20V or 0-30V in any combination.

ATV Deck

The ATV Deck mounts to the front of the ATV Roll to accommodate ATVs, legends cars, dwarf cars and go karts. It’s available in standard length to match a standard CycleDyn or extended length for customers using the drag pack.

ATV Roll

ATV Roll image
The ATV Roll attaches to either side of the CycleDyn base (or to the eddy current for extra wide applications) to accommodate ATVs, legends cars, dwarf cars and go karts. It is 20” in diameter, 32” wide and knurled like the base CycleDyn roll for excellent traction.

Drag Pack Extension

Perfect for choppers and drag bikes, the Drag Pack Extension is available in two lengths to accommodate wheelbases from 66” to 104” or 66” to 120”

Pressure Sensor Expansion Panels

Pressure Sensor Expansion Panels image

The modular sensor box allows for additional 10-channel pressure panels and additional 16-channel temperature panels. Extra transducers are sold separately.

Ramp Kits

Aluminum ramp kits are available for above ground installations. The 36” wide ramp is available in 72” or 94” lengths to accommodate low profiles and long vehicle.

Tailpipe Air Fuel Probe

Tailpipe Air Fuel Probe image

SuperFlow tailpipe exhaust probes measure the air/fuel ratio directly from tailpipe. Tailpipe probes integrate with WinDyn for live monitoring and easy post test graphing and analysis.