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2017 BMW G310R

Engine Configuration Single, 4-stroke
Engine Displacement 313 cc
Engine Cooling Liquid
Compression Ratio 10.6:1
Combustion Chamber Design Pentroof
Valves Per Cylinder 4
Intake Valves Per Cylinder
Exhaust Valves Per Cylinder
Bore x Stroke 80.0mm x 62.1mm
Conecting Rod Length
(center-to-center)
144mm (5.7 inches)
Connecting Rod Material Steel
Claimed Peak Horsepower 34bhp @ 9,500rpm
Claimed Peak Torque 20.2 lbs.-ft. @ 7,500 rpm
Engine Redline 10,500 rpm
Valve Angle (Included) 11.2 degrees Intake/ 13.3 degrees Exhaust (24.5 degrees)
Combustion Chamber Volume 33cc
Valve Train Type DOHC, Reduction Gear and Link-plate Chain Drive, Finger Followers, Shim-in-retainer Lash Adjustment
Valve Adjustment Interval 12,427 miles (20,000 km)
Intake Valve Diameter 33.5 mm
Exhaust Valve Diameter 27.2 mm
Intake Valve Stem Diameter 5.0 mm
Exhaust Valve Stem Diameter 5.0 mm
Intake Valve Maximum Lift 9.33 mm
Exhaust Valve Maximum Lift 8.17 mm
Intake Valve Timing  
Open BTDC 20 degrees
Close ABDC 21 degrees
Duration 221 degrees
Exhaust Valve Timing  
Open BTDC 14.5 degrees
Close ABDC 17.5 degrees
Duration 212 degrees
Valve Timing Measuring Point 3.0 mm (lift)
Fuel Delivery System Electronic Fuel Injection
Throttle Body Venturi Size 42mm
Air Filter Type Pleated Paper 
Exhaust System Type 1-into-1 (stainless steel)
Ignition System Digital
Lubrication System Wet Sump
Oil Capacity 1.7 quarts (1.65 liters)
Fuel Capacity 2.9 gallons (11 liters)
Transmission Type 6-speed, Constant mesh
Clutch Type Multi-plate, Wet, 
Clutch Actuation System Cable
Clutch Spring Type Coil
Number Of Clutch Springs 5
Number of Clutch Plates 15
Drive Plates 8
Driven Plates 7
Primary Drive  Straight-cut
Primary Drive Gear Teeth (Ratio) N/A (Ratio: 3.063:1)
Final Drive Sprocket Teeth (Ratio) 40/16 (Ratio 2.500:1)
Transmission Gear Teeth (Ratios)  
6th N/A (0.955:1)
5th N/A (1.095:1)
4th N/A (1.286:1)
3rd N/A (1.588:1)
2nd N/A (2.063:1)
1st N/A (3.000:1)
 Transmission Overall Ratios  
6th 7.313:1
5th 8.385:1
4th 9.848:1
3rd 12.160:1
2nd 15.797:1
1st 22.973:1