Triumph Peashooter Silencer 1 3/8". 1 1/2". Pair MufflerThese silencers have an of ID 1 1/2" and are fitted with a spacer to reduce to 1 3/8"These silencers are not available at 1 3/8"Made in UKThese can be adapted to fit a BSA A10 or other motorcycles. Mounting bracket needs to be made.Please look at all pictures