The single-cylinder, air-cooled, 4-stroke 124cc heart is based on Suzuki’s GS 125 engine. Sinnis use more or less the same design across their range and it seems to do the job perfectly well. Vibration becomes quite off-putting and uncomfortable at the top end of the rev-range, but cruising at 55mph is perfectly smooth in fifth gear. This is still an 11bhp bike, so power and torque are not things you’ll even consider while riding it. That said, once you’ve fought your way up to cruising speed it’ll hold it well and makes for a relaxing, un-threatening experience.
