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Rotax FR125 Max kart engine  - Correctly jetting the Dellorto VHSB 34 carburetor used on the Senior Rotax
Max, Junior Rotax Max and Mini Rotax Max at a busy race venue can often be complex and time consuming.
Many jetting solutions are available in today’s market place, however, due to un-calibrated weather stations
or remote internet weather services, these jetting solutions provide inaccurate jetting and poor performance.
To assist kart racers gain the competitive edge Motronix has designed and manufactured the JetSpeed
Rotax Max range of precision jetting instruments.

The JetSpeed Rotax Max instrument is an ingenious “all-in-one” portable jetting device designed to quickly
and effectively calculate the jetting for the Dellorto VHSB 34 carburetor used on the Rotax FR125 Max kart
engine. The JetSpeed Rotax Max comes with all the calculation software pre-installed and its own built-in
calibrated weather station, so literally all you need to do is switch it on! The correct jetting for both the K27
and K98 needles are then displayed on the intuitive LED display on the front panel of the device.

Please find our current Senior Rotax Max, Junior Rotax Max and Mini Rotax Max product range to the left.
Click on the product name for more information and prices. Our product range is always expanding so
please check back regularly, if you have any additional enquires about Motronix range of Instruments then
please feel free to contact one of the team at www.motronix.co.uk