TWT reviewed, BMW’s stunning R 18 retro cruiser comes with a powerful 1.8-liter twin-cylinder boxer engine. It has an old-school design with air cooling, pushrod valves, and a ton of style. Even though it looks like the engine might scrape the ground when you turn, the bike is surprisingly agile and comfortable for long rides. As always, BMW Mottrad’s engineering skills are top-notch.

The R 18 is still part of BMW’s lineup, and the “100 Years” edition, with its classic double pinstripes and fishtail mufflers, is my favorite big BMW boxer (I own a 1994 R1100RS “oilhead”). Now, with the R20 custom, BMW has made the engine even bigger, increasing it to 2,000 cc, or two liters. I’ve driven cars with smaller engines. The only other mass-produced motorcycle with a larger engine is the 2,458cc Triumph Rocket 3 triple.

Tail lights are built into the seat pan
Tail lights are built into the seat pan

The R20 is currently a one-of-a-kind model, but since previous big boxer concepts like the R18 became reality, it could happen with this one too. The R20 is designed as a “roadster,” keeping things simple with just the basics: a solo seat, gas tank, and the necessary lights and controls. Plus, the gas tank is bright pink, making the bike impossible to miss.

The R20 features a spoked front wheel with powerful dual disc brakes and six-piston calipers, along with a blacked-out rear wheel fitted with a wide 200mm tire. The concept bike’s exhaust pipes are short and likely loud, which might not pass regulations, so any production version would probably have quieter pipes.

Exposed shaft drive and linkage is usually hidden on most other BMW models
Exposed shaft drive and linkage is usually hidden on most other BMW models

This bike is meant to be ridden, not just shown off in photos. BMW even released a video of the R20 in action, with good views starting at 1:15. It also comes with an LED headlight, created using a 3D printer, and fully adjustable Öhlins Blackline suspension for a customizable ride.

The solo “floating” seat is covered in Alcantara, with the rear tail light neatly integrated into the seat pan, giving the bike a clean, simple look—no room for a passenger here. Like the R18, the R20 is shaft-driven, with the driveshaft and paralever knuckle exposed, adding to its mechanical appeal. This detail was a highlight on the R18, enhancing its strong, mechanical character, which fits well with the pushrod engine design.

the R18 before it, the massive displacement of the 2-liter boxer engine seems to give the bike stubby wings. And yet, it will corner with surprising alacrity.
the R18 before it, the massive displacement of the 2-liter boxer engine seems to give the bike stubby wings. And yet, it will corner with surprising alacrity.

According to Alexander Buckan, Head of Design at BMW Motorrad, the R20 concept boldly represents BMW’s design DNA by combining modern tech with a classic roadster look. Its oversized proportions and minimalistic style give it a distinctive character.

BMW hasn’t confirmed if the R20 will go into production or what the price might be, but if it does, it will likely include the necessary features like mirrors, a license plate holder, and turn signals to make it street legal. Of course, those who prefer a sleeker look can always make adjustments with the right tools.

Published: 26th August 2024

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