Quote:
Originally Posted by DryBark
Replied. I think you're talking about the inside of the flange, which I've measured below to be around 73mm (don't have caliper on me but I measured inside to inside pictured).
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Yes, that's what I was talking about. The gasket sits in that little lip and there's a similar recess in the flange on the lower end of the primary down pipe. And then a clamp goes around the outside and holds it all together. Per the parts diagram:
#2 is the secondary down pipe
#4 is the gasket
#5 is the clamp the connects the primary and secondary down pipes
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