Piper J3
Well Known Member
I was digging around on Amazon and found what looks like an improved exhaust spring for the 912 exhaust system. These stainless steel springs are made for motorcycle exhaust and have swivel ends. I’m not sure if length is correct, but at $5.49 for two springs, I’m going to buy a set for evaluation. I think assembled length for the 912 exhaust is 66mm, so these springs would need to stretch 10mm which sounds about right.
