BMW R 80G/S (1984 – 86)

BMW R 80G/S (1984 - 86)

The BMW R 80G/S – a true behemoth of the off-road world, capable of devouring both tarmac and terrain with ease. Its imposing stature and rugged demeanor make it the perfect companion for adventurers seeking to conquer the world’s most unforgiving landscapes.

The GS stands for Gelanden Strasse, or street scrambler, a testament to its versatility and adaptability. While it may not excel in pure off-road conditions, its factory versions have proven themselves to be more than capable, having taken home the coveted Paris to Dakar rally title on three separate occasions.

The engine, a 798cc flat-twin powerhouse, delivers a thrilling blend of power and responsiveness, making the R 80G/S an absolute blast to ride on both paved roads and dirt trails. Its legendary ‘mono-lever’ rear suspension, paired with the plush front forks, provides a level of comfort and control that’s hard to match.

With its commanding riding position, generous ground clearance, and quick-steering handling, the R 80G/S is an unstoppable force on any terrain. Whether you’re tackling a long-distance journey or a grueling off-road challenge, this incredible machine has got you covered. And with its dual-purpose tyres providing a perfect balance of grip and traction, the BMW R 80G/S is ready to take on whatever the world throws at it, and emerge victorious.

Key Specifications

Engine TypeFour stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder
Engine Capacity48.7 cubic inches / 797.5 cc
Max Power37 kw / 50 hp
Max Torque56.7 Nm / 5.8 kgf-m / 41 ft lb @ 5000 rpm
Fuel Tank Capacity5.1 US gallons / 19.5 L
Weight (Wet/Kerb)409 lbs / 186 kg
Seat Height33.9 inches / 860 mm
BMW R 80G/S (1984 - 86)

All Specifications

Make & Model

ModelBMW R 80G/S
Year1984 – 86

Engine

Engine TypeFour stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder
Displacement48.7 cubic inches / 797.5 cc
Bore x Stroke84.8 x 70.6 mm
Compression Ratio9.2:1
Max Horsepower37 kw / 50 hp
Max Torque56.7 Nm / 5.8 kgf-m / 41 ft lb @ 5000 rpm
Engine Management System2 x Bing constant depression carburetors
Cooling SystemAir cooled

Performance

Top Speed167 km/h / 104 mph

Transmission

ClutchDry single plate, with diaphragm spring
Gearbox5 Speed
Gear Ratios1st 4.40 / 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50:1
Final DriveShaft

Electrical & Electronics System

StarterElectric & Kick

Chassis & Suspension

Frame TypeDouble loop tubular frame with bolt on rear section
Front SuspensionTelescopic hydraulic forks
Front Suspension Travel7.8 inches / 200 mm
Rear SuspensionMonolever swinging arm
Rear Suspension Travel6.6 inches / 170 mm

Wheels & Brakes

Front Tire Size3.00 – 21
Rear Tire Size4.00 – 18
Front BrakesSingle ∅260mm disc
Rear Brakes200mm Drum

Dimension & Weights

Seat Height33.9 inches / 860 mm
Wheelbase67.6 inches / 1465 mm
Ground Clearance175 mm / 6.88 in
Fuel Tank Capacity5.1 US gallons / 19.5 L
Wet (kerb/curb) Weight409 lbs / 186 kg

Features

  • Mono-lever rear suspension with single gas shock unit
  • One-sided swing-arm
  • 6.7in rear wheel travel
  • Rear wheel held on by three bolts
  • Big wheel bearing
  • Internally stressed crown wheel housing
  • Leading axle forks with 7.9in front wheel travel
  • 8.58in ground clearance
  • Quick steering and lively throttle response
  • Low centre of gravity
  • Dual-purpose, knobbly S-rated tyres
  • Updated flat twin engine with bags of torque and power spread
  • Lightweight clutch and flywheel for quicker throttle response
  • Low gearing for wheelieing and off-road use
  • 100mph top speed on the open road
  • Long wheelbase and unsprung weight of driveshaft may hinder dirt ability
  • Horizontal cylinders may obstruct off-road maneuverability
  • 4.3 gallon fuel tank
  • 4101 pound curb weight

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