Dynamometers are an essential tool in modern vehicle development, calibration, and performance testing. While their primary function is to measure power and torque, today’s systems go far beyond this—allowing accurate simulation of real-world driving conditions through controlled and repeatable load application.
This enables safe, precise testing under conditions that would be difficult or impractical to achieve on the road. As a result, dynamometers are widely used for performance verification, diagnostics, and ECU and TCU calibration development.
Avon Tuning is the official UK & Ireland distributor for Dimsport dynamometers, providing a complete turnkey service including sales, installation, training, and ongoing technical support.
With over 25 years of innovation, Dimsport is a global leader in automotive tuning equipment, ECU programming tools, and dyno technology, offering solutions trusted by tuning specialists and engineering companies worldwide.
Below is an overview of some of the most popular dynamometer models available from Dimsport.
The DF2IS is a simple and cost-effective 2WD inertia dynamometer, ideal for workshops new to dyno testing.
Its straightforward design makes it easy to set up and operate, providing a practical solution for before-and-after tuning performance comparisons.
The system is best suited to vehicles producing less than 500 hp. While higher power levels can be tested, accuracy may be reduced beyond this range due to the limitations of inertia-based measurement.
In-ground or above-ground installation options are available, allowing flexible integration into a wide range of workshop layouts.
The DF2IS is a great entry-level option for users looking for a reliable and easy-to-use dyno for general performance testing.
The DF2FS is a reliable and cost effective 2WD braked dynamometer designed for cars and light commercial vehicles. It uses an eddy current brake to precisely control the acceleration rate of the vehicle, giving the operator a wide range of adjustable testing conditions.
This level of control allows for accurate and repeatable performance testing across different scenarios. Power levels of up to 1000 hp can be tested; however, as with all cradle roller dynos, maintaining traction becomes increasingly challenging beyond approximately 700 hp.
In-ground or above-ground installation options are available, allowing flexible integration into a wide range of workshop layouts. The DF2FS offers a practical and cost effective solution for workshops looking for controlled, consistent performance testing in a 2WD configuration.
The DF2AR is Dimsport's latest-generation 2WD dynamometer and represents the top model in its class. Like the DF2FS, it uses an eddy current brake to precisely control vehicle acceleration, enabling consistent and repeatable testing.
However, the traditional cradle roller design has been replaced with a single-roller system, significantly improving traction, vehicle stability and maximum power capabilities.
A fully re-engineered control system and updated software platform deliver fast, precise load control, providing enhanced responsiveness and accuracy across a wide range of testing conditions.
Due to the size of the rollers, in-ground installation is recommended to ensure optimal performance and integration.
Featuring an extremely robust cradle roller design with a hydraulic linkage system, this dyno delivers high reliability and a wide range of testing options.
It can be configured for both 2WD and 4WD operation, with the ability to run in linked or non-linked 4WD modes. Users also have the flexibility to apply load to the front axle, rear axle, or both simultaneously, depending on the testing requirements.
The extra-long version supports vehicles with a wheelbase of up to 3.5 metres, making it suitable for larger vehicles such as long-wheelbase vans (e.g. VW T6 LWB).
Both in-ground and above-ground installation options are available, allowing for flexible workshop integration. Like the DF2FS, it is capable of handling vehicles producing 1000+ hp, provided traction can be effectively maintained.
The DF4AR is Dimsport's latest-generation dynamometer and represents the top model in the range. It offers the same level of flexibility as the DF4FSHLS when it comes to testing capabilities, while introducing key design improvements for enhanced performance. The traditional hydraulic linkage has been replaced with a fixed cardan shaft, combined with a single-roller design to maximise traction and stability during testing and increasing power capabilities.
A fully re-engineered control system and updated operating software deliver faster, more precise load control, allowing for highly responsive and accurate testing conditions.
The dyno can be quickly configured for both 2WD and 4WD operation via its adaptable linkage system. In addition, an optional drive motor enables testing of regenerative braking systems, making it suitable for advanced testing of modern hybrid and electric vehicles.
Due to the size of the rollers, in-ground installation is recommended to ensure optimal performance and integration.
Equipped with a load cell design which is simple yet effective makes the DF2TR the most affordable PTO dyno on the market today. This dyno is capable of measuring the power and torque on a range of agricultural vehicles up to 330 hp and 6700 nm at the PTO. Dimsport also offer a double braked version which is capable of measuring up to 660 hp.
The DF4EAR offers a more cost-effective solution for those looking to benefit from the latest single-roller design and modern dyno technology, without requiring the full specification of the DF4AR.
It utilises the same advanced control software as the DF4AR, ensuring precise and reliable performance. The system features slightly smaller rollers and a permanently linked front and rear configuration, providing a simple and robust setup for a wide range of testing applications.
Both in-ground and above-ground installation options are available, offering greater flexibility while helping to reduce installation costs.
This makes the DF4EAR an ideal choice for users seeking proven performance, ease of use, and excellent value.
DFMTF2 'Dyno Bike' is Dimsport's next-generation motorcycle dynamometer, designed for accurate and repeatable power and performance testing across both road and competition bikes.
Its low-profile design allows for short loading ramps, making it ideal for workshops with limited space, while the integrated wheelbase adjustment and pneumatic clamping system ensure fast, secure, and precise positioning.
A 400 mm roller and powerful eddy current brake (up to 800 Nm) deliver precise control across a wide range of motorcycles, from smaller bikes through to high-performance superbikes (up to 250 kW). The system supports wheelbases from 1200 mm to 1900 mm and a maximum load of 1000 kg.
Advanced control software provides real-time data monitoring, test comparison, and accurate load control, with optional sensors available for complete data acquisition.
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