BMW K100RS (1983)

BMW has just made a bold move, wagering 60 years of success on a new inline-Four engine in the K100.

This revolutionary powerplant, developed at a cost of $110 million, replaces the venerable opposed-Twin design that has defined the brand for decades.

The inline-Four engine produces a respectable 90 horsepower, a significant increase over its Boxer predecessors.

As a result, the K100RS, one of three models to feature this new engine, offers a more agile and responsive riding experience, with improved acceleration and handling.

The K100RS, priced at $7200, embodies the perfect blend of performance and exclusivity, making it a worthy successor to the legendary BMW motorcycles of the past.

With over 22,000 units of the K100RS expected to roll off the production line this year, BMW’s gamble is looking like a winning hand.

Key Specifications

Engine Type	Four stroke, horizontal in line four cylinder, DOHC, 2 valves per cylinder
Engine Capacity	987 cc / 60.2 cub. in
Max Power	65.6 kw / 90 hp
Max Torque	86 Nm / 8.8 kgf-m / 63 ft-lb @ 6000 rpm
Fuel Tank Capacity	22 Liters / 5.8 US gal
Weight (Wet/Kerb)	548 lbs / 249 kg
Seat Height	31.90 inches / 810 mm

*n/a – information not provided by manufacturer

All Specifications

Make & Model

Model	BMW K100RS
Year	1983

Engine

Engine Type	Four stroke, horizontal in line four cylinder, DOHC, 2 valves per cylinder
Displacement	987 cc / 60.2 cub. in
Bore x Stroke	67 x 70 mm
Compression Ratio	10.2:1
Max Horsepower	65.6 kw / 90 hp
Max Torque	86 Nm / 8.8 kgf-m / 63 ft-lb @ 6000 rpm
Engine Management System	Electronic injection, Bosch LE-Jetronic
Lubrication System	Wet sump
Cooling System	Liquid cooled
Exhaust	Stainlesssteel, 4 into 1

Performance

Top Speed

220 km/h / 136 mph

*n/a – information not provided by manufacturer

Transmission

Clutch	Dry, single plate, cable operated
Gearbox	5 Speed
Gear Ratios	1st 4.50 / 2nd 2.96 / 3rd 2.30 / 4th 1.88 / 5th 1.61:1
Final Drive	Shaft

Electrical & Electronics System

Battery	20Ah
Starter	Electric

Chassis & Suspension

Frame Type	Tubular space frame, engine serving as load bearing component
Front Suspension	Telescopic fork with hydraulic shock absorber
Front Suspension Travel	7.3 inches / 185 mm
Rear Suspension	Monolever swinging arm
Rear Suspension Travel	4.3 inches / 110 mm

Wheels & Brakes

Wheels	Alloy, 8 spoke
Front Wheel/Rim Size	2.50 x 18 MT H 2
Front Tire Size	100/90-V18
Rear Wheel/Rim Size	2.75 x 17 MT H 2
Rear Tire Size	130/90-V17
Front Brakes	2 x ∅285 mm discs, 2 piston calipers
Rear Brakes	Single ∅285 mm disc, 1 piston caliper

Dimension & Weights

Seat Height	31.90 inches / 810 mm
Wheelbase	1516 m /59.7 in.
Ground Clearance	175 mm / 6.9 in.
Fuel Tank Capacity	22 Liters / 5.8 US gal
Wet (kerb/curb) Weight	548 lbs / 249 kg

Features

60-year history of opposed-Twin motorcycles replaced with a new inline-Four engine
$110 million investment in development, tooling, and new factory construction
Inline-Four engine with 1-liter displacement
Double overhead camshaft (dohc) design
Liquid-cooled engine
Fuel injection system
Longitudinal crankshaft
33,000 motorcycles produced in new factory this year
22,000 K100 models produced, including standard, sporty, and touring variants
K100RS sporty variant with $7200 price tag
K100RT touring variant with $7500 price tag
Engine designed to meet 1980s performance criteria
Engine designed with traditional BMW values: longevity, luxury, serviceability, and exclusivity
Engine configuration avoids similarity to competitors, such as Honda’s Gold Wing
10,000 hours of dyno time spent testing the engine
400,000 kilometers of test riding completed to refine the engine

*We strive to provide the most comprehensive and accurate specifications possible. However, certain details may not be available if the manufacturer did not disclose them or if the information is no longer publicly accessible. If you find any discrepancy with any data on this site, please feel free to let us know at contact@throttlecraze.com