2012 BMW S1000RR

Engine Configuration Inline four-stroke
Engine Displacement 999 cc
Engine Cooling Liquid
Compression Ratio 13.1
Combustion Chamber Design Pentroof
Valves Per Cylinder 4
Intake Valves Per Cylinder 2 (Titanium)
Exhaust Valves Per Cylinder 2 (Titanium)
Bore x Stroke 80.0 mm x 49.7 mm
Conecting Rod Length
          (center-to-center)
103mm
Connecting Rod Material Chrome-molly Steel
Claimed Peak Horsepower 193 bhp @ 13,000 rpm
Claimed Peak Torque 81 lbs. - ft. @ 9,750 rpm
Engine Redline 14,200 rpm
Valve Angle (Included) 11.2 degrees Intake/ 13.3 degrees Exhaust (24.5 degrees)
Combustion Chamber Volume 20.5cc
Valve Train Type DOHC, Link-plate Chain Drive, Finger Followers,Shim-In-Retainer Lash Adjustment
Valve Adjustment Interval 12,500 miles
Intake Valve Diameter 33.5 mm
Exhaust Valve Diameter 27.2 mm
Intake Valve Stem Diameter 5.0 mm
Exhaust Valve Stem Diameter 5.0mm
Intake Valve Maximum Lift 9.67 mm
Exhaust Valve Maximum Lift 8.54mm
Intake Valve Timing  
          Open BTDC 2 degrees
          Close ABDC 34 degrees
          Duration 216 degrees
Exhaust Valve Timing  
          Open BTDC 22.5 degrees
          Close ABDC 10.5 degrees
          Duration 213 degrees
Valve Timing Measuring Point 3mm (lift)
Fuel Delivery System BMW BMS-K-P Fuel Injection
Throttle Body Venturi Size 48 mm
Air Filter Type Pleated Paper Element
Exhaust System Type 4-2-1 (Stainless Steel)
Ignition System Digital
Lubrication System Wet Sump
Oil Capacity 4.1 quarts (3.9 liters)
Fuel Capacity 4.6 gallons (17.5 liters)
Transmission Type 6-speed, Constant Mesh
Clutch Type Multi-plate, Wet, Back-torque-limiting
Clutch Actuation System Cable
Clutch Spring Type Coil
Number Of Clutch Springs 6
Number of Clutch Plates 19
          Drive Plates 10
          Driven Plates 9
Primary Drive Gear (Straight-cut)
Primary Drive Gear Teeth (Ratio) 76/46 (1.652:1)
Final Drive Sprocket Teeth (Ratio) 45/17 (2.647:1)
Transmission Gear Teeth (Ratios)  
          6th 29/23 (1.261:1)
          5th 34/25 (1.360:1)
          4th 36/24 (1.500:1)
          3rd 38/22 (1.727:1)
          2nd 46/22 (2.091:1)
          1st 45/17 (2.647:1)
 Transmission Overall Ratios  
          6th 5.514:1
          5th 5.947:1
          4th 6.559:1
          3rd 7.551:1
          2nd 9.143:1
          1st 11.574:1