BMW 45 (reduced effect)

The 1979 BMW R45 (reduced effect) holds a unique place in the brand's history, representing an entry-level offering within BMW's renowned boxer-twin lineage. Introduced as a more accessible option, it aimed to broaden the appeal of the Bavarian manufacturer to a wider range of riders. This particular "reduced effect" variant was specifically tailored for markets or licensing regulations that capped power output, a common practice at the time. In its era, it competed directly with models like the Moto Guzzi V35 and the Honda CB400T, providing a distinct European alternative in the middleweight segment.

At its heart, the R45 features a 473.0 ccm (28.86 cubic inches) two-cylinder boxer, four-stroke engine. This unit was tuned to produce 27.0 HP (19.7 kW) at 6500 RPM, a deliberate reduction from the standard R45’s output. While not built for outright speed, it was capable of reaching a top speed of 141.0 km/h (87.6 mph), offering sufficient capability for most road conditions. The fuel tank capacity of 22.00 litres (5.81 US gallons) provided a decent range, making it suitable for touring despite its modest power figures. This engine configuration, characteristic of BMW, offered a low center of gravity and a distinctive feel.

Riding the R45 (reduced effect) was characterized by its predictable handling and comfortable, upright stance. The boxer engine's inherent balance contributed to smooth power delivery and minimal vibrations, enhancing rider comfort on longer journeys. Its suspension, while not overly sophisticated, was well-matched to the bike's intended purpose, absorbing road imperfections effectively. The ergonomics were designed for practicality rather than aggressive sport riding, making it an approachable motorcycle for riders of varying experience levels. Its moderate weight and manageable power made it easy to maneuver in urban environments while still being capable on secondary roads.

The BMW R45 (reduced effect) was primarily aimed at new riders, commuters, and those seeking a reliable, low-maintenance motorcycle with the prestige of the BMW badge. It appealed to individuals who valued durability, comfort, and a distinctive engine layout over raw power or cutting-edge performance. For those entering the world of BMW motorcycles or needing a practical daily rider that could also handle weekend excursions, the R45 offered a sensible and enduring choice. Its longevity and robust construction ensured it remained a popular option for many years after its production.