Yamaha invented the world’s Yamaha Electric Power Assist Bikes in Lancaster first electrically power assisted bicycle (PAS) in 1993. Since then we have been constantly innovating to deliver the most easy-to-use power assist systems. Just one ride and you’ll understand. A & S Bike Shop in Manheim is the place to ride one ! Yamaha Revs Your Heart in Lancaster, Yamaha Electric Power Assist Bikes in Lancaster Co. PA.