Out of the box the Rotax 125 Junior Max engine requires no additional blueprinting or engine tuning prior to use. The standard setup of the carburettor covers nearly all operating conditions. For extreme conditions the jetting of the carburettor can be changed in between sessions, and no longer requires the driver to 'tune' whilst racing. The engine has an integrated electric starter with a Touch-And-Go (TAG) ignition. It can also be upgraded to the Senior version with just a few components (available as a kit). A 6 month manufacturers warranty is included with the engine.
