just got my first V1, and would like to put an expansion chamber on it. the goal is to go 80 Polini, and cut a puch exhaust header for a 19mm carb.
it is a Fantic Lei, so clearance is a concern with the 10 inch wheels, aiming not have it scrape or extend past the rear wheel.
I am a huge fan of Proma pipes (expecially the old school GP etc) hack and weld or convert to sidebleed :shrug:
going for the shortest bolt on V1 pipe i think the MLM Cali or Peoples (not sure which is shorter) would be my best bet for off the shelf performance.
lmk what you got and how much your looking for or what bikes your building and need parts for. paypal/venmo ready