BMW and off-road tracks love story...
Twenty five years ago, they created the « Big-Enduro » off-road genre. Today, they give us (... 20,000 USD ... not really a gift finally...) this stunning off-road Boxer.
The HP2 is the first bike in the new BMW "High Performances" range of bikes: expect special, exclusive, rare (and quite expensive) motorcycles...
Developed by a small but highly dedicated team of Boxer and off-road enthusiastics, the HP2 promises agile handling, low weight (dry weight is 175 kg), low gravity center, power and torque (thanks to the Boxer concept).
Engine: leight weigh and power
The bike is based on the R 1200 GS. The engine was optimised for minimum weight (the balance shaft was turned down) and maximum power. The 1169cc flat-twin engine (as per the R1200 GS), puts out 77kW (105 bhp), while torque is unchanged at 115Nm (85 lb-ft) at 5,500 rpm. The new silencer construction is almost 2 kilos lighter than before. The entire drivetrain was also specifically tweaked for off-road use.
Chassis
The frame's tubular space-frame structure is based on the R900 R racing machines used by BMW works teams from 1999-2001 in the Dakar Rally.
To reach 270mm front wheel spring travel, the conventionnal Telelever configuration was turned down and a 45mm upside down telescopic forks was choosen.
The Paralever was redesigned : it is now 30mm longer than on the GS, and finished in a magnesium-hued powder coating. It is also the world's first spring/damper system running exclusively on air. 
The front cross-spoke wheel features a 305mm semi-floating single-disc brake with floating calliper. At the rear is a 265mm single-disc swing-calliper brake. The HP2 is not presently offered with ABS
The fuel tank is made of extra-tough, semi-transparent (for viewing fuel level) polyethylene and has a capacity of 13 litres.
Seat height is 920mm. A lower seat (900mm) is available as special equipment
R 1200 GS HP2 Spec.
Power unit
Capacity: 1 169 cc
Bore/stroke: 101mm/73mm
Max output: 77 kW @ 7 000 rpm
Max torque: 115 Nm @ 5 550 rpm
Engine configuration: Boxer (flat-twin)
No of cylinders: 2
Compression ratio: 11.0:1
Valves/gas management: HC (high camshaft)
Valves per cylinder: 4
Intake/outlet diameter: 36mm/31mm
Throttle butterfly diameter: 47mm
Fuel management: BMS-K
Electrical System
Alternator: 600 W
Battery V/Ah: 12/12 maintenance-free
Headlight: H4 W
Starter: 1.1 kW
Transmission
Clutch: Single-plate dry clutch, dia 180 mm
Gearbox: Dog-type six-speed gearbox
Primary transmission ratio: 1.823
Gear ratios:
I - 2,277
II - 1,583
III - 1,259
IV - 1,033
V - 0,903
VI - 0,805
Rear-wheel drive: Driveshaft
Final drive ratio: 2.82
Running Gear and Suspension
Type of frame: Steel tubular spaceframe, non-load-bearing engine
Wheel guidance, front: UPSD fork, diameter 45mm
Wheel guidance, rear: BMW Paralever
Spring travel, front/rear: 270mm/250mm
Camber Normal set-up: 127mm
Wheelbase: Normal set-up 1 610mm
Handlebar head angle: Normal set-up 60.5º
Brakes
front: Single-disc brake, dia 305 mm
rear: Single-disc brake, dia 265 mm
No ABS
Wheels: Cross-spoke wheels
front: 1.85 x 21
rear: 2.5 x 17
Tyres
front: 90/90-21
rear: 140/80-17
Dimensions and Weight
Length, overall: 2 350 mm
Width, overall, with mirrors: 880 mm
Handlebar width, w/o mirrors: 828 mm
Seat height: 920 mm
Weight, unladen, with full tank: 196.5 kg
Max permissible: 380 kg
Tank capacity: 13 ltr
Performance Data
Fuel consumption
90 km/h: 4.1 ltr/100 km
120 km/h: 5.5 ltr/100 km
Acceleration
0-100 km/h: 3.2 sec
Standing start km: 22.3 sec
Top speed: 200 km/h
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