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BMW R1200ST
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| Manufacturer | BMW Motorrad |
|---|---|
| Production | 2005 to 2007 |
| Predecessor | BMW R1150RS |
| Successor | BMW R1200RS |
| Engine | 1,170 cc, 2-cylinder, 8-valve boxer, air/oil cooled Compression ratio: 12.0:1 |
| Bore / stroke | 101 mm × 73 mm (4.0 in × 2.9 in) |
| Power | 109 bhp (81 kW) @ 7,500 rpm |
| Torque | 115 N⋅m (85 lbf⋅ft) @ 6,000 rpm |
| Transmission | 6-speed, shaft drive |
| Suspension | Front: BMW Telelever Rear: BMW Paralever |
| Brakes | BMW Motorrad Integral ABS (option) Front: 4-piston EVO calipers with floating 320 mm discs Rear: 2-piston floating caliper with single 265 mm disc |
| Tires | Front: 120/70ZR17 on 3.50 x 17 rim Rear: 180/55ZR17 on 5.50 x 17 rim Cast aluminium wheels |
| Rake, trail | 27°, 4.4 inches (110 mm) |
| Wheelbase | 1,502 mm (59.1 in) |
| Dimensions | L: 2,151 mm (84.7 in) W: 870 mm (34 in) H: 1,177 mm (46.3 in) |
| Weight | 205 kg (451.9 lb) (dry) 229 kg (504.9 lb) (wet) |
| Fuel capacity | 21 L (4.6 imp gal; 5.5 US gal) |
| Related | R1200GS R1200RT R1200R |
The BMW R1200ST is a sport touring motorcycle,[1] which was introduced in 2005 by BMW Motorrad to replace the R1150RS model.[2] The R1200ST features the same 1,170 cc (71 cu in) flat-twin engine, a six-speed gearbox and shaft drive as the R1200RT.
Though similar in specification to the RT, the ST is a sport-oriented motorcycle, with clip-on style handle bars, lighter fairing, resulting in an overall lighter weight than the RT. Luggage, in the form of panniers and a top box (or case) were available options. ABS braking was also an option for this model.
The styling was controversial, especially the hexagon-shaped vertical headlight.[3] Motor Cycle News referred to the styling as "quirky".[4]
References
[edit]- ^ "BMW R1200ST (2005-2007)". Motor Cycle News. Bauer Media Group. Archived from the original on 11 May 2012. Retrieved 9 March 2013.
- ^ Alexander, Sean. "2005 BMW R 1200 ST". Motorcycle.com. VerticalScope Inc. Retrieved 9 March 2013.
- ^ Ash, Kevin (2006). BMW motorcycles : the evolution of excellence. New Hampshire: Whitehorse Press. p. 156. ISBN 978-1-884313-57-8.
- ^ Baker, Ped. "First Test BMW R1200ST: Style over substance?" (PDF). Motor Cycle News. Bauer Media Group. Retrieved 9 March 2013.
External links
[edit]- BMW Motorrad R1200ST web page Archived 2019-05-08 at the Wayback Machine
Media related to BMW R1200ST at Wikimedia Commons
BMW R1200ST
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Development
Announcement and launch
The BMW R1200ST was developed as a successor to the R1150RS, aiming to blend sportbike agility with touring comfort in a more compact and dynamic package.[5] BMW Motorrad positioned the R1200ST as a sport-touring motorcycle that prioritized reduced weight and enhanced performance to appeal to riders seeking versatility on winding roads and longer journeys.[6] The model was first unveiled at the EICMA motorcycle show in Bologna, Italy, in November 2004, generating significant interest for its updated boxer engine derived from the R1200GS platform.[7] Key development objectives included achieving a 12% reduction in weight compared to the R1150RS, along with 14% more horsepower and 17% greater torque, resulting in claimed figures of 110 hp and 85 lb-ft.[5] These improvements were intended to deliver sharper handling and stronger low-end pull without sacrificing the model's touring capabilities.[8] The R1200ST entered the market as a 2005 model year bike, with initial availability in Europe starting in January 2005 and U.S. deliveries following shortly thereafter.[6] At launch, it carried an MSRP of $14,990 in the United States, placing it competitively against rivals such as the Honda VFR800 and Yamaha FJR1300 in the sport-touring segment.[9] This pricing reflected BMW's emphasis on premium engineering and features tailored for performance-oriented long-distance riding.Production timeline
The BMW R1200ST entered production in 2005 at BMW Motorrad's facility in Berlin-Spandau, Germany, following its launch that year as a sport-touring motorcycle.[10][3] Manufacturing continued through 2007, with the model receiving minor refinements in the 2006 version.[11] The 2007 model year incorporated brake system improvements but saw no major alterations.[12] Global production figures remain unpublished, but sales were modest, with approximately 650 units delivered in the United States across the three model years and higher volumes in Europe.[13] The motorcycle was primarily marketed in Europe and North America, with limited availability in Asian markets.[13] Discontinuation occurred in late 2007 after three years of production, driven by declining sales as consumer preferences shifted toward adventure and naked-style motorcycles.[14][15] By 2007, U.S. sales had dropped to fewer than 30 units, contributing to the decision to end the line.[14]Design
Engine and drivetrain
The BMW R1200ST is powered by a 1,170 cc air/oil-cooled flat-twin boxer engine, featuring a horizontally opposed cylinder configuration that provides inherent balance and a low center of gravity for enhanced stability.[8] This design incorporates four valves per cylinder—two intake and two exhaust—for efficient gas flow, along with twin spark plugs per cylinder to promote more complete combustion and reduce emissions.[3] The engine employs single overhead camshafts (SOHC), one per cylinder head, driven by chains to actuate the valves via lightweight rocker arms, contributing to reliable operation across a wide range of speeds.[16] Compared to its predecessor in the R1150RS, the R1200ST's engine features an increased stroke length while maintaining the same bore, resulting in greater displacement and improved mid-range torque delivery for better acceleration in everyday riding scenarios.[8] Fuel delivery is handled by an electronic fuel injection system with dual throttle bodies—one for each cylinder—allowing precise metering of air and fuel mixtures for responsive throttle control and optimal efficiency.[3] This setup, combined with BMW's BMS-K engine management, includes anti-knock sensors and closed-loop operation to adapt to varying conditions, ensuring consistent performance without carburetors. The drivetrain integrates a six-speed gearbox with helical-cut gears for smooth shifts and reduced noise, paired with a shaft drive system that transmits power longitudinally from the engine to the rear wheel.[17] This shaft drive employs BMW's Paralever linkage, which mounts the final drive unit to the swingarm in a way that minimizes torque reaction during acceleration, preventing the rear suspension from squatting or rising excessively.[18] Unlike some modern motorcycles, the R1200ST does not offer clutchless quick-shifting as a standard feature, relying instead on a conventional wet multi-plate clutch for engagement.[8] Overall, the engine and drivetrain emphasize a refined character suited to sport-touring, delivering power progressively with strong low-end torque for effortless overtaking and cruising, rather than peaky high-rev performance.[3] This smooth, tractable response, aided by the boxer's inherent vibration damping, makes it ideal for long-distance travel while maintaining agility on winding roads.[8] The powertrain was introduced with the model's launch in 2005, forming the core of its sport-touring identity.Chassis, suspension, and brakes
The BMW R 1200 ST employs a three-part composite frame design, with the boxer engine acting as a stressed, load-bearing member to enhance structural integrity while minimizing weight. This configuration includes a front section of welded tubular steel and a two-piece rear spaceframe of straight steel tubes, contributing to an overall dry weight of 205 kg—a reduction of about 12% compared to the predecessor R 1150 RS through optimized materials and engineering.[19][8] The front suspension utilizes BMW's Telelever system, featuring a 41 mm fixed tube that prevents fork dive under heavy braking and delivers 110 mm of wheel travel for composed road feedback. At the rear, the Evo Paralever swingarm incorporates a lightweight driveshaft and central spring strut, providing 140 mm of travel and a 10% weight savings over prior iterations to balance sporty responsiveness with touring comfort. An optional Electronic Suspension Adjustment (ESA) system enables on-the-fly electronic tweaks to preload and damping, adapting to solo, two-up, or loaded scenarios.[19][3] Braking is handled by the EVO system, comprising dual 320 mm front discs paired with four-piston fixed calipers for progressive, powerful modulation and a single 265 mm rear disc with a two-piston sliding caliper— the rear disc sized smaller than on related models for further weight savings. Stainless steel braided lines ensure firm lever feel, while the optional BMW Motorrad Integral ABS integrates front and rear brakes in a linked setup, applying 70% front and 30% rear pressure during single-lever activation to enhance control without compromising sport-touring dynamics.[19][4] This chassis-suspension-brake combination yields precise, stable high-speed tracking and nimble cornering agility, bolstered by the low center of gravity inherent to the boxer engine's longitudinal placement within the frame.[8]Styling and ergonomics
The BMW R1200ST featured a distinctive sport-touring aesthetic characterized by its aerodynamic half-fairing, which provided moderate wind protection for the rider's hands and lower body while emphasizing a lean, forward-leaning profile suited to dynamic riding.[8] The fairing's design incorporated multiple sharp planes and angles, contributing to a modern, aggressive look that blended elements of sportbike sharpness with touring practicality.[8] Central to the motorcycle's visual identity was its controversial hexagonal-shaped vertical headlight unit, often described as evoking a "cyclops" appearance due to its single, prominent enclosure housing dual H4 bulbs for low and high beams.[20][21] This design, while quirky and polarizing among riders for its unconventional styling, offered functional benefits including excellent visibility and road illumination, with the stacked configuration delivering strong light output.[8] The bodywork utilized lightweight plastic fairings for the aerodynamic panels, paired with a tubular-steel spaceframe chassis that supported the overall structure without adding unnecessary weight.[8] Color options included Night Black, Piedmont Red Metallic, and Granite Grey Metallic, with two-tone schemes like Dark Graphite Metallic over Piedmont Red adding contrast to the upper fairing and front mudguard.[19][4] Ergonomically, the R1200ST promoted a sporty yet accessible riding posture through clip-on handlebars adjustable for height by 25 mm along the fork tubes, allowing riders to fine-tune their reach and comfort.[19][17] The seat height was adjustable between 780 mm and 830 mm in two positions, accommodating a range of rider statures while maintaining a comfortable knee angle and ground reach.[19][8] A manually adjustable windshield, offering three positions with 20 mm increments, helped mitigate wind buffeting and noise, though some riders noted it provided limited upper-body shielding at highway speeds.[19][8] Optional features enhanced long-distance usability, including two-position heated grips for cold-weather touring and integrated mounts for 32-liter hard panniers, which were lighter and more compact than those on fuller-dress models like the R1200RT.[8][22]Specifications
Engine specifications
The BMW R1200ST is equipped with a 1,170 cc air/oil-cooled flat-twin boxer engine featuring a bore of 101 mm and a stroke of 73 mm, achieving a compression ratio of 12.0:1.[23] This configuration draws from BMW's longstanding boxer engine heritage, optimized for the model's sport-touring application. The engine delivers a maximum power output of 81 kW (110 PS; 109 hp) at 7,500 rpm and peak torque of 115 Nm (85 lb-ft) at 6,000 rpm.[23] It incorporates electronic fuel injection via BMW's digital engine management system (BMS-K) and complies with Euro 3 emissions standards through a closed-loop three-way catalytic converter.[4] Power is transmitted through a 6-speed gearbox with integrated vibration damper and claw-shift mechanism, paired to an enclosed shaft drive.[23] The following table summarizes the transmission ratios and final drive:| Component | Ratio |
|---|---|
| 1st gear | 2.277 |
| 2nd gear | 1.583 |
| 3rd gear | 1.259 |
| 4th gear | 1.033 |
| 5th gear | 0.903 |
| 6th gear | 0.805 |
| Final drive | 2.62 : 1 |