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With a week to go until entries close, over ten teams have confirmed they will be competing in T.T.X.G.P..
The number of riders signed-up has not been released - the closing date for them to register is the 31st March.
Billed as the world's first clean emissions motorsport event, it will take place over one lap of the Mountain Course at 11 o'clock on Senior Race Day.
A special "Motorsport in Symphony" concert will be held at the Villa Marina the evening before, performed by the London Metropolitan Orchestra.
Tourism Minister Martyn Quayle says fans will get the chance to see one of the bikes on the island next weekend:-

FC Isle of Man returning to league action at Barnoldswick Town
Hockey: Compact mixed schedule on the cards this weekend
Rugby: Busy triple-header beckons at Ballafletcher
Football: Race for Railway Cup qualification hotting up