BMW HP2 Enduro: Unleashing Offroad Excellence

When BMW Motorrad set out to create the new HP2, they weren't just building another motorcycle; they were crafting an uncompromising, sporting, and exceptionally light enduro specifically designed for the most demanding tracks in the world. The HP2, a true Boxer machine, encapsulates the essence of purist offroad riding while offering an astonishing level of refinement and cutting-edge technology. It's a bike that not only capitalises on the Boxer concept's low centre of gravity for superior rough terrain handling but also delivers supreme riding pleasure on the road, thanks to its playful handling, low weight, and high-performance power unit.

This brand-new model emerged from the passion of a small, highly dedicated team of specialists, engineers, and mechanics within BMW Motorrad. These individuals, deeply committed to the Boxer engine and personally involved in offroad motorsport, operated beyond the typical series development processes. Their motto was simple yet profound: "only an enthusiastic professional can offer another enthusiastic professional what he really wants." This unique approach has resulted in a motorcycle that, while technically based on the R 1200 GS, stands as a completely independent and truly exceptional machine, tailored in every respect to the ambitious enduro rider.

The Philosophy Behind "HP"

The designation "HP" stands for "High Performance," and the "2" signifies its flat-twin power unit. This isn't merely about raw engine power; it’s about the outstanding superiority of the entire motorcycle, a perfect balance of all individual components working together to create something far greater than the sum of its parts. It embodies a meticulously developed overall concept, offering perfection down to the last detail, superior riding characteristics, and pure, unadulterated riding pleasure. The HP2 is the first in a new, independent category of motorcycles from BMW Motorrad, focusing on Boxer models that use series technical foundations but stand out through their uncompromising dedication to a specific purpose, clear orientation to sporting performance, and exclusive product features. These machines are exclusive, authentic, and will remain relatively rare, their price reflecting their outstanding features, higher product substance, and limited production volume.

Technical Prowess and Development

While the HP2 shares its engine and on-board network with the R 1200 GS, nearly all other components are either new developments or have been extensively modified. The primary goals for the development engineers were weight saving and an uncompromising focus on the demands of offroad riding. The testing regimen for the HP2 was incredibly rigorous, spanning from the toughest offroad conditions to sustained full-throttle Autobahn runs, and from freezing temperatures to extreme desert heat. This exhaustive testing included dynamometer trials, real-world sessions in diverse climates, extreme offroad tests on BMW tracks, and participation in events like the Baja California Desert Race under the guidance of Jimmy Lewis, as well as endurance tests in Spain and South Africa. This comprehensive validation ensures the HP2’s reliability and performance under the most extreme conditions.

Drivetrain Optimisation for Offroad

The flat-twin engine, derived from the R 1200 GS, has been subtly adjusted for the HP2, yielding a maximum output of 77 kW (105 bhp) on premium plus fuel (RON 98), while maximum torque remains at 115 Nm (85 lb-ft) at 5,500 rpm. The Boxer engine's inherent smoothness and powerful, soft power delivery from low engine speeds allow the HP2 to manoeuvre slowly and smoothly, even without clutch intervention. This is further enhanced by the refined, torque-based engine management with automatic idle speed control, making the HP2 exceptionally capable on very rough tracks or in deep mud where spontaneous power is crucial. In the interest of lightweight engineering, the engine does not feature a balance shaft. Minor modifications include a deflector on the intake air snorkel to prevent splashwater, which can be removed for road use. The exhaust manifold is carried over from the R 1200 GS, but the rear silencer is a new, nearly 2 kg lighter construction, shortened because the HP2 isn't designed for luggage, thus avoiding heat issues. The six-speed transmission retains the R 1200 GS's gear ratios but features reinforced bearings on the interim shaft for higher loads. The driveshaft is entirely new, with a modified rubber damper and length adjusted to the unique Paralever dimensions, maintaining a 2.82:1 final drive ratio. The entire drivetrain boasts a high-quality, magnesium-coloured powder coating.

Revolutionary Suspension and Running Gear

The HP2's running gear and suspension are entirely new developments, incorporating 25 years of BMW Motorrad's enduro experience. The engineers aimed to perfectly balance directional stability for road riding with playful handling and agility offroad.

Frame: Rally-Bred Durability

The frame is a steel tubular spaceframe structure, drawing on knowledge gained from BMW Motorrad's R 900 R racing machines used in the Dakar Rally and other desert races from 1999–2001. This design ensures optimal and homogeneous stiffness.

Front Suspension: UPSD Fork with Travel-Dependent Damping

Front-wheel suspension is handled by an upside-down (UPSD) telescopic fork, offering a generous 270 millimetres (10.63 inches) of spring travel. This type of fork was chosen as a conventional Telelever setup couldn't sensibly accommodate such travel. A standout feature is the travel-dependent damping, allowing independent adjustment of inbound and rebound stages. An additional hydraulic system prevents the running gear from sagging under extreme conditions. Damping remains relatively independent of harshness, allowing firm damping settings without making the inbound response too stiff in the main operating range. The 45-millimetre (1.77 inches) fixed sleeve tubes provide necessary stiffness and maximum handlebar lock, coated with an extremely resistant material for superior wear protection.

Rear Suspension: The World-First Air/Spring Damper System

BMW Motorrad sets a new standard with its highly innovative, world-first air/spring damper system for the rear wheel, developed in conjunction with Continental Automotive Systems. This system, weighing just under 2.3 kg (5.1 lb), is approximately 2 kg lighter than a conventional setup. Instead of hydraulic fluid, a piston acts on air, which is forced through plate valves into a second chamber, providing damping by throttling the airflow. The air itself acts as the spring, replacing a traditional steel spring. Air offers numerous advantages:

• "Natural" progression of the spring rate under high load.
• High security against sudden system failure (pressure increases with temperature).
• "Natural" progression of damping effect under high loads (air viscosity increases with temperature).
• Frequency-dependent, selective damping with automatic load adjustment.
• Resistance to overheating, preventing damping decrease under prolonged high load.
• Simple adjustment to current load and seat height.

This results in improved suspension response and rear-wheel traction due to slightly lower unsprung masses. The air spring strut features three interconnected air chambers, with a gas-tight rolling gaiter forming the lower chamber, sealing the strut and eliminating friction from a piston rod seal. The system is fully sealed, and any leakage can be compensated by adding air via a valve, which also allows for simple seat height adjustment. A small "inspection balance" on the rear frame helps the rider set the normal position, and a manual high-pressure pump is standard for on-the-go air adjustments and tyre inflation. The unique frequency-dependent damping significantly improves rear-wheel traction on undulating surfaces, allowing the wheel to maintain optimal ground contact for better acceleration and braking safety. The basic damper setup can also be adjusted via a hand wheel, offering two stages: a comfort-oriented road setting and a firmer offroad setting. A key advantage is the strut's complete resistance to dirt and contamination, preventing wear on seals and guide units even in fine desert sand.

Wheels, Tyres, and Brakes

The HP2 features robust cross-spoke wheels, proven in the toughest conditions. The front wheel measures 1.85 x 21 inches for maximum ground clearance and guidance, while the rear is 2.5 x 17 inches. Standard tyres are tubeless Metzeler Karoo, specifically developed with BMW Motorrad for the HP2 (90/90-21 front, 140/80-17 rear). Motocross-like tyres with aggressive tread are available as special equipment for primary offroad use, also road-legal. For tubed tyres, the rear wheel has a second valve bore for tyre supports (special equipment), allowing lower air pressure. The weight-optimised brake system provides first-class stopping power and fine dosage. The front features a single-disc brake with a floating calliper (305 mm diameter, 4.5 mm thick for weight savings) and a steel-clad hose. The rear uses a single-disc swing-calliper brake (265 mm diameter) from the R 1200 GS, with a conventional rubber brake hose for a softer pressure point, ideal for enduro riding. Notably, the HP2 was launched without ABS anti-lock brakes.

Ergonomics, Controls, and Design

Ergonomics for offroad riding, with the rider frequently standing, were paramount in designing the fuel tank, seat, and controls. The new, 13-litre fuel tank is made of extra-tough, semi-transparent polyethylene, protected by a light plastic cover. A cut-out allows external fuel level checks, more practical than an electrical gauge in dynamic offroad conditions, though a reserve warning light is included. The frame and motorcycle contours at the tank-to-seat transition are kept slender for optimal guidance. The two-colour seat is slender, particularly at the front, with a geometric seat height of 920 mm (36.22 inches); a lower 900 mm (35.43 inches) seat is available as special equipment. The handlebar fastening is an intelligent solution: asymmetrically drilled clamps allow two positions, moving the handlebar fore-and-aft by 20 mm (0.8 inches) by rotating them. The aluminium handlebar tapers conically, offering a large 42° steering lock for superior agility at low speeds. Wide, stainless steel footrests ensure stability, and a patented folding spacer on the footbrake lever allows tool-less adjustment of the lever position relative to the foot, perfect for both standing and sitting.

The innovative CAN-bus on-board network from the R 1200 GS is carried over, offering fewer cables, no conventional fuses, full diagnostic compatibility, and low weight – significant benefits for an enduro. An integrated electronic immobiliser provides top-tier security. The instrument cluster is minimalist, featuring only a speedometer and an information flatscreen, without a rev counter. An additional display function allows checking operating hours, crucial for air filter changes in dusty offroad conditions.

The HP2's design is purist, with every feature serving a specific function. Reduction to the essential is a key styling element, with only the tank cover and part of the mudguard painted. Exposed plastic components, such as side tank panels and the front mudguard, are made of fully coloured, grained plastic, ensuring scratches remain virtually invisible. The HP2 is exclusively available in Indigo Blue Metallic/Alaska Grey. Functional design elements include an extremely strong headlight support that doubles as a salvaging bar, and grab recesses beneath the seat positioned to avoid dirt from the rear wheel. The number plate support and direction indicators can be easily removed for offroad riding via five bolts and a connector.

How BMW Motorrad Supports the HP2

BMW Motorrad’s commitment to the HP2 extends far beyond its innovative design and engineering. They actively support and promote the HP2’s High Performance capabilities, both in competitive motorsport and for the private owner.

Motorsport Engagement

To highlight the HP2's sporting enduro qualities, BMW Motorrad supports and manages a private racing team dedicated to competing with the HP2 in various offroad events. A prime example is their entry into the German Cross Country Championship (GCC), featuring last year's series winner, Finnish motorcycle ace Simo Kirssi, as the factory team rider. Beyond Germany, the HP2 is also entered in iconic international races such as the Baja 500 and the Baja 1000 in California. There are also plans for participation in the prologue of the Erzberg Race in Austria. In these international events, BMW Motorrad supports private teams by providing essential service and, naturally, the motorcycles themselves. This hands-on involvement in competitive racing not only demonstrates the HP2's capabilities but also provides invaluable real-world testing and feedback for future developments.

Exclusive Owner Experiences

Understanding that HP2 customers are enthusiasts with particular riding skills and demands, BMW Motorrad is preparing exclusive training offers and fascinating offroad tours specifically for them. These additional offerings will progressively complement the new High Performance concept, providing owners with opportunities to further hone their skills and fully experience the potential of their HP2 in challenging environments, cementing the sense of prestige and community around this unique machine.

Protective Equipment for Offroad Use

Every HP2 comes standard with a special package of protection components for subsequent installation, acknowledging its intended offroad use. This package includes:

• Hand Protectors: Open structure to minimise injury risk in a fall.
• Extra-Large Plastic Engine Protector: Helps minimise damage to cylinders and throttle butterfly manifolds during a fall.
• Transparent Headlight Cover: Fitted in front of the headlight to protect from stones (not homologated for public roads).
• Rear Axle Protection: Reduces damage risk to the final drive housing upon hard impact.
• "Brake-Snake": A small steel rope around the footbrake pedal to prevent stones or branches from getting stuck, which could bend, block, or inadvertently operate the lever.

Range of Equipment

Upon its introduction, the HP2 did not offer optional extras directly from the factory. However, a wide array of special equipment is available for retrofitting by customers or BMW motorcycle dealers, allowing for further customisation and expansion of the motorcycle's features at any time. This includes items such as a low rider's seat (900 mm/35.43 inches), an assembly stand, heated grips, white direction indicator covers, enduro rear and tank bags, handlebar impact protection, a tyre holder, an emergency kit for sealing leaking valve covers, and support and connection cables for the BMW Motorrad Navigator II, along with the Navigator II itself.

Technical Specifications (2006 BMW HP2 Enduro)

The following table provides a concise overview of the 2006 BMW HP2 Enduro's key specifications:

Frequently Asked Questions About the BMW HP2 Enduro

What does "HP2" stand for?

The "HP" in HP2 stands for "High Performance," indicating the motorcycle's overall sporting capabilities and superior balance of components. The "2" refers to its flat-twin Boxer engine configuration.

Is the BMW HP2 suitable for road use, or is it purely an offroad machine?

While the HP2 is primarily designed as an uncompromisingoffroad enduro and excels on demanding tracks, its playful handling, low weight, and powerful engine also offer supreme riding pleasure on the road. It's built to be versatile, though its offroad DNA is very apparent.

How does the HP2's unique air/spring damper system work?

The HP2 features a world-first air/spring damper system on the rear wheel. Instead of a traditional steel spring and hydraulic fluid, a piston acts on air, which is then throttled through plate valves to provide damping. The compressibility of the air itself provides the spring effect. This system offers advantages like lightweight engineering, natural progression of spring rate and damping, frequency-dependent damping, and easy adjustment for load and seat height.

Does the BMW HP2 Enduro come with ABS brakes?

No, upon its market introduction, the BMW HP2 Enduro did not come with ABS anti-lock brakes. The braking system was designed to provide precise control for offroad use, with a single-disc setup both front and rear.

How does BMW Motorrad support the HP2 in racing?

BMW Motorrad actively supports the HP2 in competitive offroad racing. They manage a private racing team that enters events like the German Cross Country Championship (GCC) with a factory rider, Simo Kirssi. Additionally, they support private teams competing in international races such as the Baja 500, Baja 1000, and the Erzberg Race prologue, providing essential service and the motorcycles themselves.

Are there special training opportunities for HP2 owners?

Yes, BMW Motorrad has prepared exclusive training offers and fascinating offroad tours specifically for customers who purchase the HP2. These offerings are designed for enthusiasts with particular riding skills and demands, aiming to enhance their riding experience and help them fully explore the motorcycle's capabilities.

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