BMW R18 Roctane vs Harley-Davidson Ultra Limited Comparison

Engine & Performance

Displacement	1802 cc	1745 cc
Maximum Power	90 hp	--
Fuel Tank Capacity (litres)	16 L	22.7 L
Maximum Torque	158 Nm	155 Nm
No. Of Strokes	4-Stroke	4-Stroke
Valves Per Cylinder	4	4
Compression Ratio	9.6:1	10.0:1
Drive Type	Shaft Drive	Belt Drive
No. Of Cylinder	2	2
Clutch Type	Single Disk Dry Clutch	--
Engine Type	Twin Cylinder, 8 Valves, 4-Stroke, Oil Cooled Engine	Twin-Cooled, Milwaukee-Eight
Exhaust Pipes	Dual Exhaust	Dual Exhaust
Cooling System	Liquid Cooled	Air Cooled
Bore X Stroke	107.1 mm x 100 mm	100 mm x 111.1 mm
RPM at Maximum Power	4750 rpm	--
RPM at Maximum Torque	3000 rpm	3250 rpm
Spark Plugs Per Cylinder	--	2
Valve Configuration	--	DOHC
Lubrication System	--	Wet Sump

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Dimension

Category	Cruiser	Touring
Wheel Base	1719 mm	1626 mm
Width	982 mm	--
Seat Height	720 mm	740 mm
Seating Capacity	1	2
Ground Clearance	--	135 mm
Oil Tank Capacity	--	4.7 L
Length	--	2600 mm
Dry Weight	--	398 kg

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Fuel & Ignition

Ignition System	Twin-Spark Ignition	CDI
Start Option	Electric	Electric
Fuel Type	Petrol	Petrol
Fuel Supply System	--	EFI

Chassis & Suspension

Front Suspension	Telescopic Fork	--
Rear Suspension	Swing Arm	--

Wheels & Tyres

Tyre Type	Radial, Tubeless	Radial, Tubeless
Front Tyre	120/70 R21	130/80 R17
Rear Tyre	180/55 R16	180/65 R16
Front Wheel Size	R21	R17
Rear Wheel Size	R16	R16

Electrical

Battery Voltage	12 V	12 V
Battery Capacity	26 Ah	--

Gear & Transmission

Gear Box	6-Speed	6-Speed
Transmission Type	Manual	Manual

Safety & Security

ABS	Yes	Yes
Pass Switch	Yes	Yes
Back Rest	No	Yes
Leg Guards	No	Yes
Side Reflectors	Yes	Yes
Launch Control	No	No
Engine Check Warning	Yes	Yes
Riding Modes	Road Road	Touring Touring
Shutter Lock	No	No

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Console

Odometer	Digital Digital	Analog Analog
Speedometer	Analog Analog	Analog Analog
Display Screen	Yes	Yes
Tripmeter	Yes	--
Fuel Gauge	--	Analog Analog
Tachometer	--	Yes
Oil Change Indicator	--	Yes

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Brake

Front Brake	Dual Disc Dual Disc	Disc Disc
Rear Brake	Disc Disc	Disc Disc

Chassis & Suspension

Body Frame Type	Double Loop with Bolted Beams Double Loop with Bolted Beams	--
Body Frame Material	Steel Steel	--
Side Wings	No	No
Seat Type	Single Seat Single Seat	Dual Stepped Dual Stepped
Chrome Garnish	--	Yes

Electrical

Indicator Light	Yes	Yes
Adjustable Headlights	Yes	Yes
Head Lamp	LED LED	LED LED
Tail Lamp	--	LED LED

Differentiating Features

Cruise Control

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Yes