*Now In Stock!* NOS “Original” Triumph & BSA Late Unit Singles Clutch Center Hub. Yes you read that correctly! This is a New “Original” Triumph/BSA Factory Part and not a Reproduction! So if your Hub is Rusted, Missing, or Damaged, replace it with this Genuine Factory Part! This is the “Non-Sleeved” 4-Spring Type Clutch Hub! Fits Triumph & BSA “Oil In Frame” Unit Singles (B25, B25SS, T25T, Trail Brazer, T25SS, B50, B50MX & TR5MX) from 1971-1973 only. Please refer to your parts catalog for proper fitment.*****Please note that this Clutch Center Hub is not compatible with Early Triumph & BSA Unit Singles from 1959-1970!*****Made in the UKO.E.M Part number is 57-4186, 57-4511, T4186 or T4511