if you search the forum there are various threads on this 'mod'..including a few of my own.

There's a cheap ish way but it means a small amount of work cutting and fettling,2 hours max from start to finish.

You will need various things including these..

https://www.ebay.co.uk/itm/Pit-bike-...19.m1438.l2649

https://www.ebay.co.uk/itm/4pcs-12V-...19.m1438.l2649

https://www.ebay.co.uk/itm/UK-Motorc...19.m1438.l2649

https://www.ebay.co.uk/itm/Motorcycl...19.m1438.l2649

There are various different option's/prices available..I paid more for the original tail tidy and a third of the price for oothers..all the same.