The twin-cylinders contesting the Superbike World Championship will have weight stripped from them in time for the Miller Motorsports round in the United States later this month, marking the first time in two years that the 1200cc machines’ weight will be reduced.

For the first time in the two and a half years since the regulation was introduced as the twin-cylinder capacity was raised to 1200cc, the twins contesting the series will be eligible to strip three kilograms.

The move comes after the Ducati teams have struggled to keep pace with the four-cylinders so far this season, the average value of the event averages over the first six events of the 2010 WSBK championship favouring the 1000cc four-cylinder motorcycles by more than five points – the reason for the regulation revisions.

While the twin-cylinders will go on a diet before the next round, the 1000cc four-cylinders will remain unchanged at 162 kilograms at this point in the season.