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TRIUMPH RACING CRANKSHAFT. CORRECT PART NUMBER IS 71-2804. BEARING JOURNALS ARE: TIMING SIDE 1.622" INCH OR 41.22 MM. PRIMARY SIDE IS 1.622" INCH OR 41.22 MM. SO I THINK THIS CRANKSHAFT IS STANDARD, STD. MAIN BEARING DIAMETER IS 1.180" INCH OR 30 MM SO I THINK THIS IS THE 30 MM BEARING SIDE. THIS SHOULD FIT T140 TR7 750CC TWINS BUT MIGHT FIT THE T120 650CC TWIN AS WELL BUT NOT SURE. LOOKS TO HAVE GOOD SPLINES AND KEYWAYS. PRIMARY SIDE ALTERNATOR SHAFT HAS BEEN CUT OFF FOR RACING PURPOSES. THREADS LOOK GOOD BUT A FEW MIGHT NEED SOME HELP. BEARING SURFACES LOOK GOOD AND MIGHT NEED SOME MORE LIGHT POLISHING. HAS SOME LIGHT SMALL RUST SECTIONS. I SEE NO HAMMER OR TOOL MARKS. FLYWHEEL HAS BEEN MILLED DOWN. PLEASE SEE ALL 8 PHOTOS! OVERALL IN GOOD USABLE CONDITION!