This configuration does hold the tendency to rock finish-to-finish slightly as cylinders a single and three are near the opposite finishes in their strokes. Also, contrary to an inline-4 mill, the vibes can't be cancelled out thanks to the odd number of cylinders. The Triumph Street Triple as well as https://felixinqst.bloguetechno.com/the-basic-principles-of-go-kart-raceway-70156244