NN50MD

1984 GYRO 50 NN50MD OVERVIEW It had two rear wheels and pivoting-link frame to let the front part lean during cornering while rear power unit stays flat   Engine Engine Type two-stroke air cooled single Oil supply oil injection Displacement 49cc Compression ratio 7.2:1 Fuel Delivery 14mm piston-valve type Spark plug BPR6HS Plug gap .028 …