The minimum weight for all homologated motorcycles in the Liqui Moly Junior Cup class will include the weight of the rider in 2019.

The American Motorcyclist Association has issued the 2019 regulations for MotoAmerica, the home of the AMA Superbike Championship, featuring changes to the sport regulations, as well as the technical regulations for the MotoAmerica Junior Cup and Twins Cup.

The changes to the technical regulations are intended to better balance motorcycle performance in the Junior Cup and Twins Cup classes.

“The AMA and MotoAmerica have worked closely to develop the series’ 2019 regulations, which we believe will improve MotoAmerica’s on-track product, as well as produce fairer competition in the Junior Cup and Twins Cup,” AMA Director of Road Racing Relations Bill Cumbow said. “The new regulations are now available for competitors to review as they prepare for the 2019 MotoAmerica season.”

In the Junior Cup technical regulations, the minimum weight for all homologated motorcycles will include the weight of the rider, and additional methods of balancing the performance between models are allowed.

In the Twins Cup, engine cylinders may now be overbored by 2mm, or bored to a displacement of 700cc, whichever is less.

The new regulations also clarify race re-start procedures, and new rider age limits have been established in the Junior Cup and Stock 1000 classes. In Junior Cup, the maximum age has increased from 25 to 28. In the Stock 1000 Class, the minimum age has been lowered from 18 to 17.

The new rules are available to be downloaded from the AMA website at www.americanmotorcyclist.com/Racing/Story/road-racing-rules.