BMW HP 4 Racer (2018) vs Arlen Ness Victory Vision (2010-11)
Comparison technical specifications
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| Make: | BMW | Arlen Ness |
| Model: | HP 4 Racer | Victory Vision |
| Years: | 2018 | 2010-11 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, 50° V twin SOHC, 4 valves per cylinder, self-adjusting cam chains, hydraulic lifters |
| Capacity: | 999 cc / 61 cu in. | 1731 cc / 105.6 cu-in |
| Bore x Stroke: | 80 x 49,7 mm | 101 x 108 mm |
| Compression Ratio: | 13.7-13.9 : 1 | 9.8:1 |
| Cooling System: | Liquid cooled | Air/oil cooled |
| Exhaust: | Emission control Akrapovic full titanium 4 in 2 in 1 WSBK exhaust system | Split dual exhaust with crossover |
| Induction: | Mixture control engine management Electronic racing injection, variable intake pipe length, four selectable modes | Electronic Fuel Injection with 45mm throttle bodies |
| Starting: | Electric | Electric |
| Clutch: | Multi-disc clutch in oil bath, anti-hopping clutch, mechanically operated | Wet, multi-plate |
| Transmission: | Constant-mesh 6 speed racing transmission (EVO) with straight-cut gears | 6 Speed |
| Final Drive: | Chain, Drive 16/43 (adjustable as part of equipment pack: sprocket 15, 16, 17, chainwheel 41, 42, 43, 44, 45) | Carbon Fiber Reinforced Belt |
| Front Suspension: | 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 | 43mm Inverted cartridge telescopic fork, 130mm wheel travel |
| Rear Suspension: | 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 | Single, mono-tube gas forged and cast aluminum w/ rising-rate linkage 120mm wheel travel, preload adjustable spring |
| Front Brakes: | 2 x Brembo Racing disc brake, T-floating racing brake discs, 320×6.75 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) | 2x 300mm floating rotor 3 piston caliper |
| Rear Brakes: | Single Brembo Racing disc brake, 4-piston WSBK fixed caliper with titanium pistons, brake disc diameter 220×4.0 mm Dimensions / weights | Single 300mm floating rotor 2 piston caliper |
| Front Tyre: | 120/70 ZR 17 Pirelli Diabolo Superbike Slick SC2 | 130/70 R18 |
| Rear Tyre: | 200/60 ZR 17 Pirelli Diabolo Superbike Slick SC2 | 180/60R16 |
| Seat Height: | 831 mm / 32.7 in - (rider seat low / high, 816 mm / 32.1 in / 846 mm / 33.3 in) | 673 mm / 24.5 in |
| Dry Weight: | 146 kg / 322 lbs | 364 kg / 800 lbs |
| Fuel Capacity: | 17.5 Litres / US 4.6 gal. | 22.7 Litres / 6.0 US gal |