| Quick Specs: BMW K 1200 GT (K41) | |
|---|---|
| Production Years | 2002 – 2005 |
| Engine Oil | SAE 15W-50 (API SF/SG/SH) (3.75 L) |
| Tire Size (F/R) | 120/70 ZR 17 / 180/55 ZR 17 |
| Tire Pressure (F/R) | 2.5 bar (36.3 psi) / 2.9 bar (42.1 psi) |
| Battery Type | 51913 |
| Spark Plugs | NGK DCPR7E / Bosch YR6LDE |
The BMW K 1200 GT (Internal code K41) represents a significant milestone in BMW Motorrad history: it was the final evolution of the iconic longitudinal inline-four engine architecture, affectionately known as the “Flying Brick.” Unlike its successor, which utilized a transverse layout, the K41 maintained the low center of gravity and unique vibration characteristics that defined the K-series for two decades.
Engineering Analysis: The K41 Platform
Introduced in 2002 as a more touring-oriented sibling to the K 1200 RS, the GT version integrated an adjustable windscreen, hand guards, and integrated fairing extensions. From a technical standpoint, the K41 is a masterclass in stability. The 1171cc engine acts as a stressed member of the frame, paired with BMW’s proprietary Telelever front suspension and Paralever rear swingarm, virtually eliminating brake dive and squat under acceleration.
Maintenance Guide & Technical Requirements
Lubrication System
The longitudinal engine requires high-quality mineral or semi-synthetic SAE 15W-50 oil. For a standard filter and oil change, the system requires 3.75 liters. Adhering to API SF, SG, or SH standards is critical to ensure the longevity of the internal components and the dry clutch assembly.
Electrical & Ignition
The K41 uses a high-capacity 51913 battery to handle the power demands of the optional heated seats, grips, and the power-adjustable windscreen. For optimal combustion efficiency and cold-start reliability, MotoSpecsLab recommends the NGK DCPR7E or the Bosch YR6LDE spark plugs, gapped to factory specifications.
Chassis and Contact Patch
Handling precision on this 285kg (wet) machine is highly dependent on tire condition. The 120/70 ZR 17 front and 180/55 ZR 17 rear must be maintained at 2.5 bar and 2.9 bar respectively. Given the bike’s torque profile and weight, using “GT” spec tires with reinforced sidewalls is highly recommended for touring applications.
Editorial Review: The MotoSpecsLab Verdict
The K 1200 GT (K41) is often overshadowed by the more powerful K 1200 GT (K44) that followed it. However, for the connoisseur, the K41 is the superior long-distance machine. Its power delivery is linear and predictable, and the mechanical integrity of the longitudinal engine is legendary, with many units exceeding 200,000 kilometers with basic maintenance. It remains a high-authority choice for riders seeking a sophisticated, stable, and historically significant sport-tourer.