Atc 90/110 exhaust

[parkerwarn]

Anyone know what brand exhaust this is? Also What is that Big Bore High compression piston worth? Its a 56mm piston. 223083223082223081223080

[Joseph Farrow]

Never seen that pipe before. Looks like a strait/stinger type pipe with a lawn mower spark arrestor welded on the end.
I'm guessing $50-75 on the piston kit.