The LD had been a huge success for Innocenti but to progress further with the Lambretta it needed to be radically developed. That happened with the introduction of three new models the first of which was the TV 175 launched in 1957, quickly followed by the Li 125 and li150. They were completely different from any previous Lambretta designs and in the TV 175 the most powerful machine the company had ever built. The new shape and design were an instant hit as they sold in their tens of thousands and made the Lambretta the number one choice when it came to motor scooters. With its bigger wheel size, lower centre of gravity, and four-speed engine it was a design masterclass. There is no doubt all three models paved the way for future domination by Innocenti and their importance in the Lambretta story should never be forgotten.