*New!* English Made Triumph Unit Twins Alternator Rotor Spacer. This is the “Correct” Spacer that sits behind your Rotor & in Front of your Front Engine Sprocket! O.D. Measures 1.373″, I.D. is 0.765″ & the Thickness is 0.237″. Fits Triumph 650 & 750 Unit Twins (Bonneville, T120R, T140, Tiger, 6T, TR7, TR6R, Etc) from 1963-1972 with the Standard Ignition. Please refer to your parts catalog for proper fitment.*****Please note that this Spacer is not Correct for Triumph 650 Unit Twins that have E.T. / A.C. Ignition!*****Made in EnglandO.E.M Part number is 70-4573 or E4573