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Home / Motorcycles /Sport / HP4 RACE

HP4 RACE

bmw-motorrad-hp4-race
A Masterpiece of Engineering.
The HP4 RACE is more than the sum of its parts. This bike is pure emotion. From the development right up to the racetrack, passion is what has made this race bike what it is. An innovation driver, designed to push the limits. The HP bike is the first motorcycle in the world to offer a full carbon frame and carbon wheels. With 158 kW (215 HP) of power, it weighs just 146 kilos dry. A handmade dream come true for race enthusiasts.

New Benchmark in Lightweight Construction.
The frame of the HP4 RACE is made of endless carbon fibre and is a continuous component from the steering head to the swing arm pivot. Compared to the standard frame, it saves a full four kilos in weight. For the BMW HP4 RACE's carbon technology, it's not about how it looks, but rather its characteristics. As rigid as aluminium, as hard as steel.

Build by Hand. Configured for Maximum Performance.
Made by hand in Berlin, the HP4 RACE engine is a further development of the engine from the long-distance WM and the WorldSBK. It produces 158 kW (215 HP) and the maximum rotational speed was increased to 14,500 rpm. The maximum torque of 120 Nm is at 10,000 rpm. The first service, including an oil change, is carried out after the engine has been run in and recorded on the test stand by our specialists. The engine is endoscoped and the control times and valve clearance are adjusted. Meaning that the HP4 RACE is ready to reach its full potential on the racetrack right from delivery.

Highlights in Detail.
The engine housing was "HIPed" – the smallest air pockets were eliminated from each individual part under overpressure. The light and high-strength motorsport steel connecting rods are paired to 0.5 g and move in the finely balanced crankshaft. The four pistons are paired and optimised for withstanding the increased rotational speeds and loads. The maximum regulated oil pressure of the oil pump was reduced from 6 to 5 bar and, in combination with thin-bodied 0W40 oil, generates significantly less power loss. Each HP4 RACE Motor engine is tolerated to firing capacity. After retracting the engine, the combustion chamber is endoscoped in order to detect any collisions of the piston on the combustion chamber roof. The engine on the test stand is fully resilient right from the word go.

Riding Modes & Shift Assistant.
The 6-speed EVO gearbox has shortened shift travels and includes a secondary transmission. The gearbox is controlled via the HP RACE Shift Assistant Pro. The rider receives clear feedback with each gearshift due to the lack of a spring actuator. As is usually the case in racing the first gear is located at the top. Gears 2-6 are shifted downwards. If necessary, the gearshift mechanism can be converted to street format. The wheelie control and the maximum engine torque are attuned to the respective riding modes WET, INT, DRY1, DRY2. The pit lane limiter is ready for use when the first gear is selected. When at a standstill, the launch control also starts automatically. This ensures that riders are able to focus their full concentration on the race start.

Steering Head & Fork Bridge
Every HP4 RACE has its own consecutively numbered carbon plate that is countersunk into the fork bridge. The functional chassis of the HP4 RACE can be adjusted for any type of racetrack. Using the variable offset adjustment, riders can adjust the factory settings of 30 mm with depositor stones in 26-32 mm and 30-28 mm. The steering head angle is 0.5° flatter than on the standard model at 65.5°. It can be adjusted from +0.5° to +1°. Thanks to the settings, the an after-run of 95-112 mm can be achieved. Shift Unit A milled aluminium button panel makes all important riding settings available with particular operating accuracy. On the left, the dashboard display screens can be switched and all DTC and EBR settings carried out. Both the setting for the riding modes ( WET – INT – DRY1 – DRY2 ), the start button and pit limiter and the kill switch are located on the right hand side.

Seat & Fork Ergonomics.
Optimal ergonomics for every rider. The standard seat height is 831 mm, the lowest seat adjustment (-15 mm) is 816 mm and the highest seat adjustment (+15 mm) is 846 mm. Furthermore, the milled footrest system has 8 different settings. The handlebar tapering can also be adjusted by 15°.

DTC & EBR
The dynamic traction control gets its information from the re-positioned angular rate sensor. The traction can be adjusted from +7 to -7 and four riding modes are available to choose from. The modes: WET – INT – DRY1 – DRY2 vary in terms of the progressive mapping of the gears, the relative maximum torque and the specification of the wheelie control. Together with the EBR (engine brake), riders can influence the braking and acceleration characteristics and optimally adjust to the conditions of the racetrack.

Carbon Wheels.
EThe carbon fibre rims and the specific design of the wheels save an additional 1540 g compared to the forged wheels. The significantly reduced dimensions of the wheels, especially the circumference, are particularly noticeable with each change of direction and when braking. For the material connections, an optimal positive locking is achieved by shrinking and pressing in add-on parts such as the chain strap mounting made of aluminium. This enables insert solutions to be completely avoided and the stability to be increased even more.

Titanium Screws.
A dry weight of 146 kilos (DIN 171 kg) is hard work. Each component was weight-optimised or, if it is not needed, discarded. It was checked right down to the smallest detail where a gram can be saved and the function kept intact or whether it might even be able to be improved. For instance, titanium screws are used for the engine and frame. In sizes 6, 8 and 10, they not only save weight, but also save on the required tools.

Engine  
Type Water/oil-cooled 4-cylinder four-stroke in-line engine, four titanium valves per cylinder, two overhead racing camshafts, milled oil sump, Pankl connecting rod, precision-balanced and lightened crankshaft
Bore x stroke 80 mm x 49.7 mm
Displacement 999cc
Nominal capacity 158 kW (215 hp) at 13,900 rpm (maximum speed 14,500 rpm)
Max. torque 120 Nm at 10,000 rpm
Compression ratio 13.7-13.9 : 1
Fuel preparation Electronic racing injection, variable intake pipe length, four selectable modes
Exhaust system Akrapovic full titanium 4 in 2 in 1 WSBK exhaust system
Performance / Consumption  
Top Speed over 300 km/h
Fuel grade Superplus unleaded petrol, minimum octane number 98 (RON)
Electrical system  
Alternator 406 W
Battery 12 V /5 Ah,Li ion maintenance-free
Power transmission  
Clutch Multi-disc clutch in oil bath, anti-hopping clutch, mechanically operated
Transmission Constant-mesh six-speed racing transmission (EVO) with straight-cut gears (gears 1, 2, 4, 5 and 6
Secondary drive 16/43 (adjustable as part of equipment pack: sprocket 15, 16, 17, chainwheel 41, 42, 43, 44, 45)
Traction control DTC adjustable in 15 stages
Engine brake EBR adjustable in 15 stages
Chassis and Suspension / Brakes  
Frame Carbon monocoque RTM frame with steering head angle and swinging-arm pivot adjustment, load- bearing engine
Rear frame Carbon monocoque rear frame with seat height adjustment (3 positions, 30 mm adjustment range)
Front suspension/spring elements Öhlins FGR 300 WSBK fork, adjustable rebound and compression-stage damping, adjustable spring preload, Öhlins SD052 adjustable steering damper, front wheel quick-change system thanks to rotatable forklegs with front-wheel cover mounted (brake calipers need not be removed to change a wheel) spring stiffness 10.5 N/mm
Rear-wheel guide / spring elements Aluminium WSBK swinging arm, Öhlins TTX 36 GP central spring strut, adjustable rebound and compression-stage damping, adjustable spring preload, top spring strut pivot point adjustable (0/3 mm), adjustable spring strut deflection (tension strut length), contact surfaces for wheel spacer bush on chain tensioners for simple/hands free wheel fitting, chain tensioner titanium on outside, aluminium on inside, CFRP auxiliary stand mountings on swinging arm, spring stiffness 95N/mm
Spring travel,front/rear 130 mm/120 mm
Wheelbase 1440 mm
Castor 102.5 (adjustable between 95-112);
Steering head angle 65.5° (adjustable 0.0°, +/-0.5°, +/-1°)
Tension strut 2113 mm (variably adjustable +/-5 mm. steplessly in 0.1 mm steps)
Swinging arm pivot -3 mm over K46Mü3 (adjustable +-4 mm,+-3 mm,+-2 mm,+-1.0 mm) -> (HP4R designation "-2" corresponds to K46MÜ3 "-3" = standard)
Swinging arm length 604 mm
Offset fork bridge 30 mm (adjustable 26 mm, 28 mm, 32 mm)
Wheels Carbon wheels including press-fitted wheel spacer bushes for easy wheel fitting
Front rim dimensions 3.50 x 17"
Rear rim dimensions 6.00 x 17"
Front tyre 120/70 ZR 17 Pirelli Diabolo Superbike Slick SC2
Rear tyre 200/60 ZR 17 Pirelli Diabolo Superbike Slick SC2
Front brake Brembo Racing twin disc brake, T-floating racing brake discs, 320x6.75 mm diameter, 4-piston monobloc WSBK GP4-PR fixed caliper with titanium pistons, Brembo Racing RCS19X18 master cylinder, including adjustable Brembo Racing brake lever, Brembo Racing clutch lever (without clutch switch)
Rear brake Brembo Racing single-disc brake, 4-piston WSBK fixed caliper with titanium pistons, brake disc diameter 220x4.0 mm
footrest system Rigid footrest system milled from aluminium and adjustable in 8 positions
Vent valves on brake lines "Stahlbus" rapid vent valves at all relevant positions for brake bleeding
Handlebar ergonomics Handlebar sweep variably adjustable (15°)
Dimensions / weights  
Seat height at unladen weight Seat height 816 mm (lowest position) 831 mm (standard position) 846 mm (highest position)
Inner leg curve at unladen weight Inner leg curve 1829 mm (lowest position) approximately 1859 mm (standard position) approximately 1889 mm (highest position)
Usable fuel tank capacity 17.5 l
including reserve of approximately 4 l
Length 2.070
Treble 1193
Width 777
Dry weight 146 kg
Kerb weight, ready for road, full tank 1) 171.4 kg

The relevant dimensions correspond to DIN unladen weight 1) According to Directive 93/93/EEC with all operating fluids, refulled to at least 90% of the usable fuel tank capacity