*New!* Top Quality Triumph Quick Detectable Rear Wheel Dust Cap Cover. Most of these Dust Covers are always either Missing or Damaged from your Hub! Replace yours today! O.D. Measures approx 1.907″ & the I.D. Measures approx 1.288″. Fits Triumph 500 & 650 Pre-Unit Twins (Bonneville, T120R, T110, 6T, Etc) from 1953-1962. Fits Triumph 650 Unit Twins from 1963-1964 only. Also fits Triumph 350 & 500 Unit Twins from 1957-1964 only. Please refer to your parts catalog for proper fitment.*****Please note that this Part will only Fit Triumph “Q.D.” Rear Hubs as listed above!*****Made in EnglandO.E.M Part number is 37-1035 or W1035