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YZF-R1 Speed ListEngine speed (rpm) 13900Tire radius (mm) 311 perimeter (m) 1.954Primary reduction ratio 43 65 1.512GEAR PLANThe numberof teethRatio17 17 17 16 17 16 17 16 17 15 16 17 15 16 15 16 15 16 15 15 15P W 41 42 43 41 44 42 45 43 46 41 44 47 42 45 43 46 44 47 45 46 47A 14 34 2.429 184.1 179.7 175.5 173.2 171.5 169.1 167.7 165.2 164.1 162.4 161.4 160.6 158.5 157.8 154.9 154.4 151.3 151.1 148.0 144.8 141.71stB 14 33 2.357 189.6 185.1 180.8 178.5 176.7 174.2 172.8 170.2 169.0 167.3 166.3 165.4 163.3 162.6 159.6 159.1 155.9 155.7 152.5 149.1 146.0C 16 37 2.313 193.3 188.7 184.3 181.9 180.1 177.6 176.1 173.5 172.3 170.6 169.5 168.6 166.5 165.8 162.6 162.2 158.9 158.7 155.4 152.0 148.8A 15 32 2.133 209.5 204.6 199.8 197.2 195.3 192.5 190.9 188.0 186.8 184.9 183.8 182.8 180.5 179.7 176.3 175.8 172.3 172.0 168.5 164.8 161.32ndB 16 32 2.000 223.5 218.2 213.1 210.4 208.3 205.4 203.6 200.6 199.2 197.2 196.0 195.0 192.5 191.7 188.0 187.5 183.8 183.5 179.7 175.8 172.0C 16 31 1.938 230.7 225.2 220.0 217.1 215.0 212.0 210.2 207.0 205.6 203.6 202.3 201.3 198.7 197.8 194.1 193.5 189.7 189.4 185.5 181.4 177.6A 17 31 1.824 245.1 239.3 233.7 230.7 228.4 225.2 223.3 220.0 218.5 216.3 215.0 213.8 211.1 210.2 206.2 205.6 201.6 201.3 197.1 192.8 188.73rdB 19 33 1.737 257.4 251.2 245.4 242.2 239.8 236.5 234.5 231.0 229.4 227.1 225.7 224.5 221.7 220.7 216.5 215.9 211.6 211.3 206.9 202.4 198.1C 18 29 1.611 277.5 270.9 264.6 261.1 258.5 254.9 252.8 249.0 247.3 244.8 243.3 242.0 239.0 237.9 233.4 232.8 228.1 227.8 223.1 218.2 213.6A 20 32 1.600 279.4 272.7 266.4 263.0 260.3 256.7 254.6 250.7 249.0 246.5 245.0 243.7 240.6 239.6 235.1 234.4 229.7 229.4 224.6 219.7 215.04thB 23 35 1.522 293.8 286.8 280.1 276.5 273.7 269.9 267.6 263.6 261.8 259.2 257.6 256.3 253.0 251.9 247.1 246.4 241.5 241.2 236.2 231.0 226.1C 21 31 1.476 302.8 295.6 288.7 285.0 282.2 278.2 275.9 271.8 269.9 267.2 265.6 264.2 260.8 259.7 254.8 254.0 249.0 248.6 243.4 238.2 233.1A 19 28 1.474 303.3 296.1 289.2 285.5 282.7 278.7 276.4 272.2 270.4 267.6 266.0 264.6 261.3 260.1 255.2 254.5 249.4 249.0 243.9 238.6 233.55thB 22 31 1.409 317.2 309.7 302.5 298.6 295.6 291.5 289.0 284.7 282.8 279.9 278.2 276.7 273.3 272.0 266.9 266.1 260.8 260.5 255.0 249.5 244.2C 22 30 1.364 327.8 320.0 312.6 308.5 305.5 301.2 298.7 294.2 292.2 289.2 287.5 286.0 282.4 281.1 275.8 275.0 269.5 269.1 263.5 257.8 252.3A 21 28 1.333 335.3 327.3 319.7 315.5 312.4 308.0 305.5 300.9 298.8 295.8 294.0 292.5 288.8 287.5 282.1 281.2 275.7 275.3 269.5 263.7 258.16thB 25 33 1.320 338.7 330.6 322.9 318.7 315.6 311.1 308.5 303.9 301.8 298.8 297.0 295.4 291.7 290.4 284.9 284.1 278.4 278.0 272.2 266.3 260.7C 26 33 1.269 352.2 343.8 335.8 331.5 328.2 323.6 320.9 316.1 313.9 310.8 308.9 307.2 303.4 302.0 296.3 295.4 289.6 289.2 283.1 277.0 271.1• Values in the speed table may vary slightly according to tire manufacturer and size.• Select after referring to the value in the speed table.EnginesideWheelsideSecondaryreductionratio(Sprocket)Speed(km/h)– 22 –