2009 BMW R1200GS, Engine Type Air-cooled / oil-cooled Boxer twin-cylinder Displacement 1170 cc Bore X Stroke 101.0 mm x 73.0 mm Horsepower 105 bhp @ 7500 rpm Torque 85 lb/ft @ 5750 rpm Valve Gear High Camshaft, chain driven No of cylinders 2 Compression Ratio 12.0 : 1 Engine Management BMW Engine Controller - BMS K Valves per Cylinder Four Valves 2 x 36 mm intake / 2 x 31 mm exhaust Fuel Tank HDPE, internal pump and internal filter Alternator W 720 Watts @ 14 Volts Battery V/AH 12 Volts / 14 Amps/hour Engine Summary The two cylinder flat twin Boxer engine is BMW's famous, time-tested, signature design. First designed in 1923, its two horizontally mounted cylinders are like a boxer's Drivetrain Clutch 180 mm dry, single plate with hydraulic actuation Gear Box 6 Speed gear box Primary Transmission 1.73 Gear Ratios I: 2.37 II: 1.64 III: 1.29 IV: 1.06 V: 0.93 VI: 0.84 Final Drive System Enclosed driveshaft with universal joints Final Drive Ratio 2.91 Frame & Suspension Frame Tubular steel frame Front wheel suspension BMW Telelever Rear wheel suspension BMW Paralever Spring Travel front/rear 7.5 inches / 7.9 inches Ground Clearance N/A Handlebar center point angle 62.9 degrees Brakes Brake System BMW Front Brakes BMW 4 Piston Caliper x 2 Front Rotor 12.0 inch Dual Rotors Rear Brakes BMW 2 Piston Caliper Rear Rotor 10.4 inch single Rotor Actuation Hydraulic, DOT 4 fluid type Wheels & Tires Front Wheel 2.5 x 19 cast aluminum wheel Rear Wheel 4.0 x 17 cast aluminum wheel Front Tire 110/80-19 Rear Tire 150/70-17 Dimensions Overall Length 87.0 inches Overall Width 36.6 inches Wheelbase 59.3 inches Seat height 33.5 / 34.3 inches Weight - Dry N/A Max permissible weight 968 lbs Fuel Capacity 5.3 gallons
