Would this side mount license plate bracket fit?
Bikermart: Triumph Speedmaster Wunderkind 2Stripes Side Number License Plate Mounts, triumph bobber
Free Spirit side license plate bracket for Triumph Bobber 1200 & Speedmaster 1200 Model 308936 - Austria, Germany, Italy
Access Design Side License Plate Holder Triumph Trident 660 License Plate Holder - buy cheap ▷ FC-Moto
Side-Mount License Plate Kit for Triumph Bobber
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Side Mount license plate holder compatible with Triumph Street Scrambler / Twin Craftride LH5 ✓ Buy now!
Side-Mount License Plate Kit for Triumph Bobber
Rizoma Side Arm Adjustable License Plate Holder Black Aluminum for
NEW License plate holder for Triumph BONNEVILLE / T100 / T120 / THRUXTON 2004-2018 - MOSKIS