This week marks a historic moment for Morgan Motor Company, as the boutique sports car manufacturer has made its last-ever steel chassis.

Introduced in 1936, the steel chassis has been produced continuously ever since, making it the longest-ever running production car architecture. But even a company as traditional as Morgan must keep up with the times, which is why the UK-based firm switched to the CX-Generation bonded aluminum platform last year.

All its current four-wheeled models are underpinned by the modern architecture. Nevertheless, Morgan still had some pending orders for steel chassis cars and this week the last of them was built, putting an end to an 84-year tradition.

Watch: 2020 Morgan Plus Four Is New But Still Retains The Brand’s Classic Charm

Company founder HFS Morgan aboard an unfinished Morgan 4-4, the brand’s first car to feature the steel ladder chassis

Morgan’s steel ladder chassis debuted in 1936 in the Morgan 4-4, the brand’s first car to have four cylinders and four wheels; up until that point, the company had only sold three wheelers.

With many alterations and improvements, the steel chassis went on to underpin a variety of models over the years, including the Plus 4, Plus 4 Plus, first-generation Plus 8, 4 Seater, V6 Roadster, and the 4-4’s eventual successor, the 4/4. Actually, every four-wheeled Morgan produced before 2019 has used a variation of the steel chassis, with two exceptions: the Aero range and the second-generation Plus 8.

The chassis’ famous design elements include its combination of sliding pillar front and leaf spring rear suspension, a setup used by very few other car manufacturers. In total, Morgan has made 35,000 four-wheeled cars with a steel chassis, and they were delivered in 65 countries around the world, with many of these models still being used today.

Assembly of the last Morgan to feature the steel ladder chassis, the Plus 4 70th Edition

The final steel chassis car is a Morgan Plus 4 70th Edition, purchased by a loyal Morgan customer who also owns the famous Le Mans-winning Plus 4 ‘TOK 258’. The Plus 4 70th Edition marks 70 years of production of the Plus 4, which began in 1950. It is limited to a run of just 20 individually numbered examples, all of which feature a gold-painted chassis, Platinum Metallic paintwork, and a host of other upgrades.

The all-new Morgan Plus Four, launched in March 2020, has switched to the new bonded aluminum CX-Generation platform. It remains to be seen if it will last as long as its predecessor…