Triumph TR5T Trophy Trail / BSA B50 MX rear swinging arm Opn. 83-4180 (83--2212)2212)
condition: NOS Made in England For Opn. 83-2213 use: 83-2212
will also fit BSA B25 - B50 OIF-types 1971973 + Triumph T25T and T25SS
Total length: Centre to Centre : 410 mm