The Model 61 was introduced by Lotus in 1967. It was a Formula Ford single-seater body with a lightweight tubular chassis. It featured rear wheel drive and a Hewland 4 speed transmission, while its engine was the classic 1.6L Ford Kent inline four, producing around 112hp. It was notable for its innovative design with advanced suspension for its time, making it one of the most competitive and popular models in Formula Ford competitions in Europe and America.