MB announce new BGM pistons | NEWS bam PISTONS, BGM Meteor piston, BGM Piston, BGM Race Tour, bgm replacement piston, BGM ring peg failure, BGM RT piston, MB Developments, MB Scooters, Scooter Center Koln 0 Here’s the latest news from MB Scooters about the long-awaited replacement RT – Race Tour kit pistons.