for the life of me I agree with Oldfart..it does look like the stock arm with a slight kink
trick as all showsa but eh..can't help first visual impressions
I do love those FMF porky heads though and it's a C..hmmmm..I want I want!!
there's actually a reasonable 125C on egay at present listed as an 80 model..looks like she's pretty original too and it's fitted with a powerband!!