Saito FG-61TS Twin Petrol Engine SAT61FGTSSaito FG 61TS Twin Petrol Engine SAT61FGTS Introducing Saito's latest addition to their range of Petrol(Gas) Four Stroke engines the FG 61TS Twin. With the same high quality build we expect from Saito. The Saito FG 61TS Twin is a bored out version of the FG 57TS. With the same high quality build we expect from Saito. It has been designed as an alternative yet practical solution to the large singles normally used in 50cc class scale and aerobatic