BMW Motorrad unveils R 18 cruiser with 1.8-liter Big Boxer engine l Design, Features

Today, BMW unveiled the 2021 R 18, a retro-style cruiser that looks nothing like any other BMW motorcycle currently available. Inspired by the BMW R 5 from the '30s, the bike has an open-running driveshaft, a double-loop frame, and a 1.8-liter horizontally opposed two-cylinder engine that's called the Big Boxer.

With a relaxed seating position, a "no-frills technology" approach, and a frame design prepared for the aftermarket scene, the R 18 strives to please purists and customizers alike.

At its core, the R 18 has a boxer engine, just like the R 5 did. This modern iteration is 1,802 cc and claims the title of the most powerful BMW boxer ever built. It harbors 90 horsepower at 4,750 rpm and 111 lb-ft of torque between 2,000 and 4,000 rpm.

The classic setup carries over to the suspension, as well, as the R 15 has a telescopic front fork with 1.9-inch tubes. The centrally mounted cantilever suspension strut has travel-dependent damping and an adjustable spring preload, and the rear features a double-sided swingarm with an enclosed axle drive.

Suspension travel up front is 4.7 inches, while the rear is 3.5 inches. Braking is handled by twin-disc brakes up front, a single-disc brake in the rear, and four-piston fixed calipers.